Multiple
Choice
Identify the letter of the choice that best completes the statement or answers the
question.
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| 1. | What drive belt is commonly
used on combines to drive light loads with pulleys? a. | Round belt | b. | V-belt | c. | Flat belt | d. | Serrated-belt | | | | | | | | |
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| 2. | On the grain handling
equipment, what drive chain is used for heavy loads operating at low speeds? a. | Roller chain | c. | Silent chain | b. | Plain chain | d. | Detachable link chain | | | | |
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| 3. | Which of the following is the
common cause of scored gear teeth in the drive system of a combine? a. | Excessive backlash of gears | b. | Intermittent overloading of
gears | c. | Dirt, grit, or metal particles on the gear
teeth | d. | Excessive gear speed | | |
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| 4. | On a combine, where is a
reciprocating drive commonly used? a. | To operate the
shakers | c. | To drive the cutterbar | b. | To power the grain
auger | d. | To control the steering mechanism | | | | |
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| 5. | On a combine or agricultural
tractor, the appropriate wheel slippage ranges from: a. | 0 to 2 percent | c. | 20 to 25 percent | b. | 10 to 15 percent | d. | 30 to 35 percent | | | | |
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| 6. | When a tractor tire is
correctly filled with liquid ballast, what percentage of the total space should be
liquid? a. | 10 percent | b. | 25 percent | c. | 75 percent | d. | 100 percent | | | | | | | | |
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| 7. | In grain handling systems,
hydraulic cylinder problems are commonly caused by: a. | Excessive heat in the hydraulic system | b. | Insufficient hydraulic pressure | c. | Dirt in the hydraulic system | d. | Water in the hydraulic system | | |
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| 8. | If the oil in a combine’s
hydraulic system is foaming, what is the most likely the problem? a. | The hydraulic oil is dirty. | b. | There is too much water in the hydraulic
oil. | c. | There is insufficient hydraulic oil in the
reservoir. | d. | The hydraulic pump is not pumping. | | |
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| 9. | The center of gravity for a
skid steer loader ______. a. | Is always in the same
place | b. | Is moved lower when the bucket is raised | c. | Changes as the position of the bucket and loader changes | d. | Does not affect the loader’s safe operation of
stability | | |
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| 10. | For the safe operation of a
skid steer loader, the operator must: a. | Wear gloves, a hard hat, safety glasses,
and a respirator | b. | Keep the bucket at least five feet above
the ground while moving forward | c. | Be properly secured in the seat with a
belt or other restraint | d. | Move the loader only in reserve when the
bucket is raised | | |
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| 11. | When a person must reach into
the cab of a skid steer loader, the following safety criteria should be followed: a. | The bucket should be lowered to the ground and the engine turned
off. | b. | The transmission should be in neutral and the bucket should be at
mid-height. | c. | The parking brake should be set and the bucket should be
raised. | d. | A rollover protective structure should be in
place. | | |
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| 12. | Which of the following two
factors directly influence the field capacity of agricultural equipment? a. | Travel speed and operating efficiency. | b. | Machine weight and ground clearance. | c. | Power takeoff (PTO) speed and temperature. | d. | Machine height and implement width. | | |
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| 13. | The power output of a
tractor’s power takeoff (PTO) depends on: a. | Torque and rotational
seed | b. | Wheel diameter and travel speed | c. | Fuel consumption and engine temperature | d. | Hydraulic pressure and flow rate | | |
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| 14. | Most tractor manufacturers
suggest refueling at the end of the day _______. a. | To prevent moisture accumulation in the
fuel tank overnight. | b. | Because fuel is less dense in the evenings
and the tractor’s tank will hold more fuel. | c. | To reduce the chance of combustion common with daytime
refueling. | d. | Because in the morning, a cold tractor engine starts more easily with
a full tank. | | |
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| 15. | What should be done to increase
the amount of wheel slippage for a tractor with very little or no slippage? a. | Add ballast to the tractor. | c. | Drive at a slower
speed. | b. | Remove ballast from the tractor. | d. | Operate the tractor in a lower
gear. | | | | |
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| 16. | If the forward visibility of a
tractor operator is obstructed while transporting a large round bale with a front-end loader
attachment, which of the following is the correct procedure? a. | Stand up and hold on to the steering wheel while leaning out of the cab to
see. | b. | Move the bucket to the highest position and drive quickly to the
destination. | c. | Position the bale close to the ground and back the tractor so the
operator can see. | d. | Have an assistance ride on top of the bale
and give the driver verbal instructions. | | |
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| 17. | The torque specifications for a
bolt is 3 foot-pounds. If a torque wrench calibrated in inch-pounds is used, how many inch-pounds are
required to equal 3 foot-pounds? a. | 3
inch-pounds | b. | 12 inch-pounds | c. | 36 inch-pounds | d. | 48 inch-pounds | | | | | | | | |
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| 18. | A skid steer loader uses two
hydraulic cylinders that are 2.5 inches in diameters and 36 inches long. If the loader’s
hydraulic system can generate a maximum pressure of 2,500 pounds per square inch, calculate the
maximum force that each lift cylinder can produce?
Formulas: Force =
Pressure x Cross Sectional Area of Piston
Area of Circle =
¹ x (diameter)ª ÷ 4 a. | 6,250 pounds | c. | 15,700 pounds | b. | 12, 272 pounds | d. | 40,087 pounds | | | | |
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| 19. | A portable auger is powered by
an electric motor that rotates at 1725 revolutions per minute. If the auger is to turn at
approximately 525 revolutions per minute and the pulley with a three-inch diameter pulley, what size
pulley is required for the auger?
Formula: (diameter of pulley 1) x (speed of pulley
1) = (diameter of Pulley 2) x (Speed of Pulley 2) a. | 4 inch | b. | 6 inch | c. | 8 inch | d. | 10 inch | | | | | | | | |
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| 20. | A combine travels at six miles
per hour and has a grain head that is 30 feet wide. If it harvests 50 bushels of grain per acre, what
is the average rate of grain harvest in bushels per minute? a. | 8.3 bushels per minute | c. | 80.5 bushels per minute | b. | 18.2 bushels per minute | d. | 9,160.8 bushels per minute | | | | |
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| 21. | Currently and over the next few
years, the US grain transportation infrastructure is faced with the complex problem
of: a. | Making loan payments on future market transactions | b. | Competing with railroads to transport grains from small rural
communities | c. | The separation and storage of transgenic grains from the time of
harvest to terminal markets | d. | The mandatory satellite tracking of trucks
and trains carrying food grains | | |
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| 22. | Break-even analysis is the use
of a simple mathematical formula to determine the sales level at which the business: a. | Neither incurs a loss nor makes a profit | b. | Has only small amounts of profit and loss | c. | Neither of their variable costs equal their fixed costs | d. | Has their net sales revenue equal to their marginal costs | | |
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| 23. | An example of a variable cost
for a grain elevator employing seasonal workers is: a. | Monthly telephone charge for local calls | b. | Property tax on elevator | c. | Depreciation on a grain
auger | d. | Overtime pay for hired labor | | |
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| 24. | Which of the following is
correct with respect to the operation of loader equipment near the edge of a deep
ditch? a. | Raise the loader’s bucket up to keep the equipment’s
center of gravity as high as possible. | b. | Disengage the transmission, do not use the
brake, and let the equipment coast to the bottom of the ditch. | c. | Loader equipment should not be operated near the edge of deep
ditches. | d. | Operate the equipment at high speeds when near a deep
ditch. | | |
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| 25. | A suffocation hazard exists
from the concentration of gasses in the grain storage bins. The most common danger is
from: a. | Carbon Dioxide (CO2) given off
by spoiling grain | b. | Nitrogen Tetroxide (N2O4) given off
through the aeration process | c. | Nitrogen Dioxide ( NO2 ) given off by the during process | d. | Hydrogen Sulfide (HSO4) given off
by the grain respiration | | |
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| 26. | It is not safe to enter forage
or grain storage structures when they are being loaded or unloaded. If a grain storage bin must be
entered, what should be done before entering? a. | Use a cell phone to maintain contact with
someone in case of emergency | b. | Shut off, lock, ad tag the power to all
conveying equipment for the facility | c. | Prepare a gas mask to be used if
needed | d. | Remove shoes to allow crawling rather than walking on top of the
grain | | |
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| 27. | The fixed costs associated with
owning grain-handling equipment include: a. | The operating costs not declared on income
tax expenses | b. | Depreciation and opportunity costs | c. | Deprecation, interest, shelter, taxes, and insurance | d. | Taxes and government incentive payments | | |
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| 28. | Which type of fuel is most
efficiently converted into work by a tractor’s engine? a. | Gasoline | b. | Diesel | c. | LP-gas | d. | Propane | | | | | | | | |
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| 29. | Preparing the combine for
highway travel can reduce the risk of a highway accident. A procedure that will reduce the risk of
combine overturn is to: a. | Move the auger to the unloading
position | b. | Make sure the vehicle has a slow-moving vehicle (SMV) sign, lights,
and reflectors | c. | Transport it on the highway before sunrise and after
sunset | d. | Empty the grain tank | | |
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| 30. | In the 1990’s, the United
States accounted for about what percent of the world’s wheat exports?
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| 31. | Over the next few years the
number of grain hauling semi trucks that farmers own will: a. | Remain the same | c. | Decrease | b. | Increase | d. | Reduce to half | | | | |
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| 32. | A customer will store 14.000
bushels of wheat in an elevator for three months and the storage charge is 2.5 cents per bushel for
each month is stored. How much will it cost to store the wheat for three months? a. | $350 | b. | $1,050 | c. | $14,000 | d. | $42,000 | | | | | | | | |
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| 33. | The local sales tax is 7.85 %
on items sold. What is the total charge, including the sales tax, for an item marked with a price of
$36.78 a. | $36.86 | b. | $37.57 | c. | $39.67 | d. | $44.63 | | | | | | | | |
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| 34. | An 8-inch diameter auger loads
50,000 pounds of wheat in 45 minutes when operating (turning) at 450 revolutions per minute. If wheat
has an average eight of 62 pounds per bushel, what is the material handling capacity of the auger in
bushels per hour: a. | 806.5 bushels per hour | c. | 62,000.0 bushels per
hour | b. | 1075.3 bushels per hour | d. | 66,666.0 bushels per
hour | | | | |
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| 35. | If the average weight of wheat
is 60 pounds per bushel, how many bushels of wheat can be transported in a rail car with a maximum
carrying capacity of 100 tons?
Note: 1 Ton = 2000 pounds a. | 33.3
bushels | b. | 2160.0 bushels | c. | 6000.0 bushels | d. | 3333.3 bushels | | | | | | | | |
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| 36. | To ship wheat by barge, the
rate is $13.00 per Metric Ton. If a barge has a maximum carrying capacity 35,000 Metric Tons, what is
the charge for a fully loaded barge? a. | $29,120 | b. | $42,000 | c. | $420,000 | d. | $455,000 | | | | | | | | |
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| 37. | The transport cost to ship
wheat by rail is $46.74 per Metric Ton of wheat and each rail car will transport a maximum load of
90.9 Metric Tons. What is the total cost to ship 40 rail cars fully loaded with
wheat? Note: 1 Metric Ton = 2240 pounds a. | $75.87 | c. | $169,946.64 | b. | $4,248.67 | d. | $380,680,473.60 | | | | |
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| 38. | The small boom sprayer has a
40-gallon tank and travels 125 feet in 20 seconds. What is the speed of the sprayer in miles per
hour? Note: 1 mile = 5280 feet, 1 hour = 3600
seconds a. | 4.26 miles per hour | c. | 9.66 miles per hour
| b. | 6.25 miles per hour | d. | 15.23 miles per
hour | | | | |
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| 39. | Determine the effective field
capacity in acres per hour for a combine with a swath width of 24 feet, an operating speed of 4.5
miles per hour, and a field efficiency of 80 percent?
Note: 1 acre = 43,560
square-feet a. | 10.47 acres per hour | c. | 19.20 acres per
hour | b. | 13.09 acres per hour | d. | 24.00 miles per
hour | | | | |
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| 40. | The average annual fixed cost
involved in owning a truck to transport grain is $15,000 and the custom rate for hauling grain is 10
cents per bushel. The operating cost for the truck is ten cents per bushel. How many bushels must be
transported in a year’s time to break even on the purchase of this
truck?
Break
Even Bushels = Ave. Annual Fixed $ ÷ (custom $ per Bu - Operating $ per
BU) a. | 6,000 bushels | c. | 600,000 bushels | b. | 250,000 bushels | d. | 2,500,000 bushels | | | | |
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| 41. | To turn an overhead light on
and off with wall switches from four different locations, the following number and type of light
switches are necessary. a. | Two 3-way switches and two 4-way
switches | b. | One 3-way switch and three 4-way switches | c. | Three 3way switches and one 4-way switch | d. | Four 4-way switches | | |
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| 42. | The electrical device that is
used in electrical circuits to step-up or step-down voltage: a. | Rectifier | b. | Capacitor | c. | Transformer | d. | Diode | | | | | | | | |
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| 43. | When a single switch
simultaneously controls three lights, the lights are wired in ______ to allow each light to operate
at rated voltage and amperage? a. | Series | b. | Parallel | c. | A split connection with one in series and
two in parallel | d. | A split connection with two in series and
one in parallel | | |
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| 44. | Which of the following standard
motor enclosures is appropriate, both functionally and economically, for an electrically powered feed
grinder used out of doors? a. | Open motor
enclosure | c. | Totally enclosed motor enclosure | b. | Water proof motor enclosure | d. | Explosion proof motor
enclosure | | | | |
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| 45. | What causes the relay contacts
of a mechanical magnetic relay to open and close? a. | The centrifugal force caused by the
motor’s rotation. | b. | The magnetic field produced by the
electromagnetic coil. | c. | The gravitational force acting n the
weighted relay. | d. | The solenoid action of the motor’s
drive shaft. | | |
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| 46. | If the contacts of a mechanical
magnetic relay have a normally closed designation, what happens when the relay’s coil is
energized? a. | The contacts open and remain opened as long as the coil is
energized. | b. | The contacts close and remain closed as long as the coil is
energized. | c. | The contacts open and remain opened for one or two
seconds. | d. | The contacts close and remain closed for one of two
seconds. | | |
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| 47. | Which of the following motor
types is appropriate for a single phase, hard starting load such an air compressor? a. | Capacitor start, induction run motor | c. | Split phase
motor | b. | Shaded pole motor | d. | 3-phase, induction run
motor | | | | |
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| 48. | An electric motor that is
classified as a capacitor star, capacitor run motor will have: a. | A low starting torque | b. | A horsepower rating appropriate only for
two phase operation | c. | Capacitors to reduce the operating
amperage for low voltage operation | d. | Capacitor to assist with the starting and
running of the motor. | | |
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| 49. | A mechanical magnetic relay is
used to control a 120-volt motor. A low voltage control, operating at 12 volts, controls the
relay’s magnetic coil. Which of the following statements is correct? a. | The relay contacts carry low voltage and low voltage passes through the
coil. | b. | The relay contacts carry the motor amperage passes through the
coil. | c. | The relay contacts carry the motor amperage and low voltage passes
through the coil. | d. | The relay contacts carry only the low
voltage and the motor amperage passes through the coil. | | |
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| 50. | If an electrical relay is used
to correctly control a three-phase motor which of the following pole designations is
correct? a. | Single Pole | b. | Double
Pole | c. | Triple Pole | d. | Quadruple Pole | | | | | | | | |
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| 51. | Automatic electrical controls
are used to operate electrical equipment by sensing environmental variables, changes in conditions,
and changes in locations. Which of the following are all automatic electrical
controls? a. | Thermostat, humidistat, and smoke detector | b. | Toggle switch, radon sensor, and traffic light | c. | Fuel gauge, ammeter, and watt-hour meter | d. | Photo electric cell, pull chain, and thermometer | | |
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| 52. | If three incandescent lights
(light bulbs), 100 Watts, 200 Watts, and 300 Watts, are connected in parallel to 110 colts,
which of the following is true? a. | Each light operates at the same
brightness | b. | The 100 watt light is brightest | c. | The 200 watt light is brightest | d. | The 300 watt light is brightest | | |
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| 53. | If three incandescent lights
(light bulbs), 100 Watts, 200 Watts, and 300 Watts, are connected in series to 110 volts,
which of the following is true? a. | Each light operates at the same
brightness | b. | The 100 watt light is brightest | c. | The 200 watt light is brightest | d. | The 300 light is brightest | | |
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| 54. | If three incandescent lights
(light bulbs), all 75 Watts, are connected in parallel to 110 volts, which of the following is
true? a. | Each light operates at a different voltage | b. | Each light operates at a different amperage | c. | Each light operates at a different wattage | d. | Each light has the same resistance (ohms) | | |
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| 55. | If three incandescent lights
(light bulbs), 50Watts. 100 Watts, and 200 Watts, are connected in parallel to 110 volts,
which of the following is true? a. | Each light operates at the same
voltage | b. | Each light operates at the same amperage | c. | Each light operates at the same wattage. | d. | Each light has the same resistance (ohms) | | |
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| 56. | If three incandescent lights
(light bulbs), 60 Watt, 75 Watt, and 100 Watt are connected in series to 100 volts, which of
the following is true? a. | Each light operates at the same
voltage. | b. | Each light operates at the same amperage. | c. | Each light operates at the same wattage. | d. | Each light has the same resistance. | | |
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| 57. | What current (amperage) is
required for a 3.6 kilowatt electric water heater when operating at 240 volts?
Formulas: Wattage = Voltage x
Amperage
1 Kilowatt = 1000 Watts a. | 0.02 amps | c. | 864.00 amps | b. | 15.00 amps | d. | 864000.00 amps | | | | |
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| 58. | What is the operating
resistance (ohms) of a 120-volt electrical heat lamp that requires 3 amps to
operate? Voltage = Amperage x Resistance a. | 0.03 ohms | b. | 40.00 ohms | c. | 140.00 ohms | d. | 360.00 ohms | | | | | | | | |
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| 59. | A two horsepower, single phase,
dual voltage motor is operating at 115 volts and 24 amps when fully loaded. If the motor connections
are rewired to operate at 230 volts and it is connected to a 230 volt power source, what will happen
to the full-load amperage (FLA) of the motor? a. | Full load amperage will decrease from 24
to 12 amps. | b. | Full load amperage will increase from 24 to 48
amps. | c. | Full load amperage will decrease from 230 amps to 115
amps. | d. | Full load amperage will increase from 115 to 230
amps. | | |
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| 60. | If the wattmeter measures 5800
watts of power being used by a five horsepower electric motor, operating at 230 volt, and 28 amps,
what is the power factor for the motor? a. | 0.123 or 12 % power
factor | c. | 0.901 or 90 % power factor | b. | 0.252 or 25 % power
factor | d. | 2.072 or 207 % power factor | | | | |
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| 61. | Block and brick walls are
sometimes placed on footers consisting of continuous slabs of concrete to provide a solid, level
foundation. What is the minimum depth for a concrete footer poured for an eight-inch block
wall? a. | 2 inches deep | b. | 8 inches deep | c. | 36 inches
deep | d. | 48 inches deep | | | | | | | | |
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| 62. | Which of the following
dimensions describes a standard sheet of plywood? a. | 1/4 inch x 2 feet x 4
feet | c. | 3/4 inch x 4 feet x 8 feet | b. | 1/2 inch x 4 feet x 6
feet | d. | 1 inch x 6 feet x 10 feet | | | | |
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| 63. | Nail fasteners should be
located at sufficient distance from the end and edge of lumber to avoid splitting the wood. A nail
placed in the end of a board, that splits the wood will have a load carrying strength that
is: a. | Zero to near zero, almost no load carrying strength | b. | One-half the strength of a nail that does not split the wood | c. | Three-quarters the strength of a nail that does not split the
wood | d. | Splitting the wood does not reduce the load -carrying
strength | | |
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| 64. | What is the name of the bonding
product used in concrete that is manufactured by heating limestone and clay, and then grinding and
mixing the product into a fine powder? a. | Portland
concrete | c. | Portland mortar | b. | Portland
cement | d. | Portland bond | | | | |
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| 65. | Modern building codes are legal
documents that set forth the minimum structural requirements for the protection of public health,
safety, and general welfare. The primary authority for established building codes in the United
States is: a. | American Builder’s Institute | c. | Uniform Building
Code | b. | American Building Code | d. | Uniform Builder’s
Institute | | | | |
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| 66. | The standard unit of lumber
measurement is equivalent to a board measuring 12 inches by 12 inches by one inch, and is described
as a: a. | Square-foot | b. | Cubic-foot | c. | Lumber-foot | d. | Board-foot | | | | | | | | |
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| 67. | The load on a roof that is
constant in magnitude and location throughout the life of the building due to the combined weight of
all permanent structural and nonstructural components is the structure’s
________. a. | Ground load | b. | Dead load | c. | Live load | d. | Open load | | | | | | | | |
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| 68. | Which of the following properly
sized wood fasteners will provide the greatest holding strength when used to join softwood
lumber? a. | common nail | b. | box nails | c. | machine
screw | d. | lag screw | | | | | | | | |
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| 69. | When metal is cut, what is the
name of the opening or space that is produced by the cutting equipment? a. | crater | b. | joint | c. | weld | d. | kerf | | | | | | | | |
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| 70. | During the plasma arc
process,the gas is heated to a partially ionized condition that enables it to: a. | Conduct electrical current | c. | Change to ionized atoms | b. | Produce an inert gas | d. | Resist high temperature melting | | | | |
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| 71. | For the plasma arc process to
cut a material, it must have which property? a. | Conductivity | b. | Ductility | c. | Malleability | d. | Rigidity | | | | | | | | |
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| 72. | What decade was the plasma arc
cutting process first introduced to the welding industry? a. | 1950’s | b. | 1970’s | c. | 1990’s | d. | 2000’s | | | | | | | | |
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| 73. | During the plasma arc cutting
process, the metal that resolidifies and adheres to the bottom edge of a cut is
called: a. | Dross | b. | Slate | c. | Daze | d. | Shell | | | | | | | | |
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| 74. | Which of the following lens
shades is most effective at reducing the brilliancy of light and screening out the harmful infrared
and ultra-violet rays produced during welding? a. | # 2 shade
lens | b. | # 5 shade lens | c. | # 10 shade lens | d. | # 12 shade lens | | | | | | | | |
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| 75. | The types of stress commonly
evaluated in the design of structures include: a. | Tension and
compression | c. | Failure and destruction | b. | Rust and
corrosion | d. | Hydration and oxidation | | | | |
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| 76. | What is the most common steel
used in agricultural construction for buildings, fences, and gates? a. | Cast iron | b. | Mild steel | c. | Tool steel | d. | Wrought iron | | | | | | | | |
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| 77. | What is the scientific symbol
for the element known as iron?
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| 78. | How many cubic yards of
concrete are needed to completely fill a foundation that measures 12 feet by 24 feet and is four
inches thick?
Note: 27 Cubic feet = 1 cubic
yard 1 foot
= 12 inches a. | 3.6 cubic yards of concrete | c. | 42.7 cubic yards of
concrete | b. | 10.7 cubic yards of concrete | d. | 1,008.0 cubic yards of
concrete | | | | |
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| 79. | What is the following
quantities of lumber has the greatest number of board-feet? a. | Twelve boards measuring 2 inches by 4 inches by 10 feet | b. | Eight boards measuring 1 inch by 6 inches by 10 feet | c. | Six boards measuring 2 inches by 2 inches by 10 feet | d. | Ten boards measuring 1 inch by 12 inches by 10 feet | | |
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| 80. | How many sheets of standard
sized, three-quarter inch plywood are needed to completely cover a floor measuring 36 feet by 24
feet? a. | 24 sheets of plywood | c. | 36 sheets of plywood | b. | 27 sheets of plywood | d. | 40 sheets of plywood | | | | |
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| 81. | An advantage of storing
grain is: a. | Increased quality of grain by reducing exposure to
weather. | b. | Reducing milling time and expense by increased kernel
cracks. | c. | Decreasing shelf life by removing excess
moisture. | d. | Increased labor due to the number of workers operating the drying
equipment. | | |
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| 82. | An advantage of storing
grain is: a. | Kernel “popping” only occurs at low
temperatures. | b. | It reduces dependency on weather conditions for harvest
success. | c. | It reduces the operating costs for
harvesting. | d. | Drying operations are more economical than letting crops dry in the
field. | | |
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| 83. | Grain with damaged kernel or
significant amounts of foreign material should be stored at: a. | 1 to 2 percent points lower moisture content than sound, clean
grain. | b. | 5 to 10 percentage points lower moisture content than sound, clean
grain. | c. | The same moisture content as sound, clean
grain. | d. | 40 degrees Fahrenheit and 17 % moisture to meet the 280-day safe
storage recommendation. | | |
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| 84. | As a general rule of thumb,
increasing the air temperature by _______ doubles the moisture-holding capacity of air and cuts the
relative humidity in half. a. | 20 degrees
Fahrenheit | c. | 60 degrees Fahrenheit | b. | 40 degrees
Fahrenheit | d. | 80 degrees Fahrenheit | | | | |
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| 85. | Grain loaded into extremely
large containers (semi-trucks, railcars, barges) exhibit the following
characteristics: a. | Grain tends to be more homogeneous in distribution regardless of
handling vibrations. | b. | Grain tends to be more homogeneous in
distribution due to random harvesting activities. | c. | Course particles tend to concentrate in a region near the center of the
container. | d. | Fine particles tend to concentrate in a region near the center of the
container. | | |
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| 86. | When grain is cooled to a
storage temperature that ranges between 50 to 70 degrees Fahrenheit , it results in a
condition: a. | That is optimum for insect reproduction and grain
spoilage. | b. | Where insect reproduction is reduced. | c. | Where all insect activity becomes dormant. | d. | Where all insect feeding is eliminated and no further grain damage
occurs. | | |
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| 87. | Under certain conditions grain
acts much like quicksand and can be hazardous to individuals standing in grain. A person submerged up
to his or her knees can easily become trapped in: a. | Grain with low moisture
content | b. | Grain with high moisture content | c. | Grain stored to a debt of two feet or less | d. | Flowing grain | | |
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| 88. | A common cause of death when
someone is trapped in flowing grain is: a. | Suffocating | b. | Crushing | c. | Falling | d. | Electrocution | | | | | | | | |
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| 89. | In order to prevent serious
injury when someone is repairing grain augers: a. | Lockout the power supply so the auger
cannot operate. | b. | Wear gloves and eye protection when
cleaning an auger that is operating. | c. | Have two observers watch so if someone
becomes entangled they can offer assistance. | d. | Remove the old crusted grain while the auger is turning at a reduced
speed. | | |
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| 90. | Which of the following
statements is TRUE? a. | Grain sampling to determine moisture
content is not important for grain storage. | b. | Accurate grain sampling is more important to the farmer than to the grain
buyer. | c. | Sampling of grain is defined as a process of removing an appropriate
smaller volume from a larger quantity for testing. | d. | The distribution of broken grain constituents and foreign materials such as glass is
generally uniform throughout a grain load, | | |
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| 91. | Which of the following is
NOT an integrated pest management technique commonly used with stored grain? a. | All grain is fumigated before storage. | b. | Avoid mixing clean with grain of questionable origin. | c. | Clean the bins and trucks thoroughly to prevent insect
infestation. | d. | Fumigate grain bins only when insect infestations reach unacceptable
levels. | | |
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| 92. | Which of the following is TRUE
with regard to augers and grain damage? a. | Operating augers at 25% capacity can
reduce grain breakage. | b. | Operating augers at 50% capacity can
reduce grain breakage. | c. | Operating augers at 75% capacity can
reduce grain breakage. | d. | Operating augers at 100% capacity can
reduce grain breakage. | | |
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| 93. | Moisture content is a key
factor influencing grain damage during harvest. Generally, less damage occurs during harvest if the
grain has a moisture content of:
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| 94. | The coring of grain storage bin
refers to: a. | Adding new grain only to the outside of the
bin. | b. | Increasing the airflow through the center of the
bin. | c. | Removing a portion of grain from a bin between the time when grain is
first added to the bin and when the bin is filled. It can result in the mixing of different quality
grains. | d. | Aeration through the outer layers of grain to create a cold vertical
column through the center of the grain bin. It can result in a center section of the grain
freezing. | | |
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| 95. | The maximum recommended storage
days for grain stored in a bin is based on the: a. | Wettest grain in the
bin | b. | Driest grain in the bin | c. | Average moisture content of grain in the bin | d. | Sea level | | |
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| 96. | Which of the following is the
appropriate equipment to use when accessing the top of a grain bin or entering a grain bin from the
top? a. | Ladder | b. | Rope | c. | Chain | d. | Cable | | | | | | | | |
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| 97. | A rectangular grain bin is 12
feet wide and 16 feet long. The grain bin is filled to a level depth of 8 feet and the corn averages
45 pounds per cubic foot. How many pounds of corn are in the bin? a. | 1,536 pounds | b. | 8,640 pounds | c. | 69,120
pounds | d. | 138,249 pounds | | | | | | | | |
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| 98. | If wheat has an average weight
of 60 pounds per bushel and there are 0.453 kilograms in one pound, how many kilograms are there in
100 bushels of wheat? a. | 2,718
kilograms | c. | 43,488 kilograms | b. | 6,000
kilograms | d. | 260,928 kilograms | | | | |
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| 99. | In determining field loss in
corn, the average count is 5 kernels of corn per square foot of area sampled. If there is
approximately 87,120 kernels of corn in one bushel, how many bushels of corn is lost per acre?
Note: 1 acre = 43,560 square feet a. | 0.5 bushels per
acre | c. | 10.0 bushels per acre | b. | 2.5 bushels per
acre | d. | 25.0 bushels per acre | | | | |
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| 100. | A round storage bin is 15 feet
in diameter and filled to a depth of 15 feet. If corn weighs 45 pounds per cubic foot and there are
56 pounds per bushel, how many pounds of corn are in the bin?
Note: Volume of Cylinder = height
x ¹ x (diameter)2 / 4 a. | 2,651 pounds | b. | 7,952 pounds | c. | 37,969
pounds | d. | 119,282 pounds | | | | | | | | |
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