Multiple
Choice
Identify the letter of the choice that best completes the statement or answers the
question.
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| 1. | When knife selections on a
cutter bar mower are equal distance from the centerline of the guard at each end of the stroke, the
cutter bar is said to be in correct ____. a. | alignment | b. | adjustment | c. | register | d. | camber | | | | | | | | |
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| 2. | The replaceable cutting
sections on cutter bar mower knives are fastened by ____. a. | bolts | b. | rivets | c. | screws | d. | bolts and rivets | | | | | | | | |
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| 3. | Adjusting the knife hold-down
clips on a cutter bar mower can be made by ____. a. | shimming | b. | turning the adjusting screw | c. | bending with a
hammer | d. | either shimming or bending with a hammer | | |
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| 4. | Multi-disk mowers use ____ to
actually cut the crop. a. | free swinging
knives | c. | reciprocating knives | b. | sections | d. | sharpened disks | | | | |
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| 5. | When large round bales are used
the moisture content of the crop being baled may be as high as ____ percent.
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| 6. | Which of the following
windrowers use a conveyor belt or belts to move the crop to discharge? a. | draper | b. | auger | c. | swather | d. | radial | | | | | | | | |
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| 7. | The implement used to scatter
and fluff a crop to allow it to dry or cure quickly is called a _______. a. | parallel bar rake | c. | windrower | b. | tedder | d. | finger wheel
rake | | | | |
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| 8. | The major reason for
baling hay with a large round baler vs a small square baler is _________. a. | time efficiency | c. | labor efficiency | b. | cost efficiency | d. | improved quality of the hay | | | | |
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| 9. | The purpose of wrapping a large
round bale with twine is to _______. a. | help retain the bale
shape | c. | make the ball more durable | b. | prevent forage loss | d. | all of these are correct | | | | |
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| 10. | Which of the following types of
tractor PTO controls is best suited to field operations such as baling? a. | transmission driven | c. | sprag clutch | b. | relative ground speed | d. | independent | | | | |
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| 11. | The theoretical field capacity
of a machine such as a windrower or forage harvester is a function of what two
factors? a. | machine weight and height | c. | travel speed and working
width | b. | PTO speed and angle | d. | machine temperature and
velocity | | | | |
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| 12. | In order to determine the PTO
(power takeoff) power output of a tractor, one must measure _______ and ________. a. | torque and rotational speed | b. | drawbar pull and travel
speed | c. | fuel consumption and engine temperature | d. | pressure and flow | | |
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| 13. | When baling hay, if there is a
large bunch of hay in the windrow and you are concerned about clogging the baler, you should
______. a. | shift to a higher gear | c. | shift to a lower
gear | b. | reduce engine speed | d. | shut off the PTO | | | | |
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| 14. | The process of ensuring that
PTO shaft sections are properly assembled to prevent excessive vibration during operation is called
_______. a. | telescoping | b. | phasing | c. | telegraphing | d. | coding | | | | | | | | |
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| 15. | When operating a tractor with a
mounted loader on the highway during transport from one field to the next, the operator should always
_______. a. | lock the brake pedals together | b. | raise the loader bucket fully | c. | unlock the brake pedals to aid in steering | d. | operate in the lowest speed range | | |
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| 16. | The average farm tractor will
convert about _____% of engine power to PTO power.
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| 17. | Which of the following types of
mowers is the most efficient for forage harvesting? a. | rotary | b. | flail | c. | cutter bar | d. | macerator | | | | | | | | |
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| 18. | Most tractor manufacturers
suggest refueling at the end of the day______. a. | to prevent moisture
accumulation | c. | to save time | b. | because fuel is less
expensive | d. | because the fuel is more dense | | | | |
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| 19. | If you check tractor wheel
slippage in the field and find that it is zero, what should you do? a. | nothing | c. | add more ballast | b. | remove
ballast | d. | drive faster | | | | |
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| 20. | Loss of crankcase vacuum would
normally result in a. | premature wear | b. | over speeding | c. | excessive oil consumption and
smoking | d. | breakage of the connecting rod | | |
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| 21. | When special tools are required
for a particular engine, they will be listed in a(n); a. | Sears Catalog | c. | owner’s manual | b. | automotive catalog | d. | repair manual | | | | |
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| 22. | Metal fatigue cracks will
result from... a. | overheating | c. | poor quality
metal | b. | excessive vibration | d. | over tightened
tools | | | | |
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| 23. | When should safety glasses be
worn in the shop? a. | when using a grinder | c. | when using any
wrench | b. | when using a hammer | d. | at all times | | | | |
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| 24. | A piston with a hole melted
through the crown must likely failed due to exposure to... a. | dirt in the engine | c. | detonation | b. | lack of
lubrication | d. | overheated engine | | | | |
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| 25. | When measuring an engine
cylinder for wear, the most appropriate of the tools listed below to use is a... a. | ruler | c. | inside micrometer | b. | outside
micrometer | d. | small hole gauge | | | | |
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| 26. | When working on a small
gasoline engine on a lawn mower, the service technician should... a. | disconnect the spark plug wire from the spark plug to prevent accidental
starting. | b. | fill the fuel tank to the top to ensure the fuel vapors are not
present. | c. | disconnect all safety devices so they don’t interfere with the
diagnosis. | d. | remove the blade to prevent injury during diagnosis and
repair. | | |
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| 27. | The first step in the diagnosis
and testing program is... a. | know the
system | c. | list possible causes | b. | operate the
engine | d. | test your conclusions | | | | |
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| 28. | One full revolution of the
thimble on a micrometer is equal to what measurement expressed as a decimal? a. | 1.000 | b. | 0.250 | c. | 0.050 | d. | 0.025 | | | | | | | | |
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| 29. | An application of a dial
indicator would be... a. | checking spark plug
gap | b. | checking crankshaft end play | c. | measuring rod bearing to crankshaft clearance | d. | measuring piston ring end-gap | | |
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| 30. | When should the high-idle (top
operating speed) of a lawn mower be set above the values recommended by the
manufacturer? a. | When expecting to work in heave grass
conditions | b. | When the customer complains of low power | c. | If the engine governor is “hunting” | d. | The high idle should never be set higher than recommended | | |
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| 31. | Improperly torqued head bolts
are likely to result in... a. | warped
head | c. | scored cylinder wall | b. | broken
valve | d. | engine out of time | | | | |
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| 32. | Failure from insufficient
lubrication in a small gas engine is characterized by... a. | Discoloration of the connecting rod | c. | connecting rod near the piston
pin | b. | ridge near the top of the cylinder | d. | holes in the
piston | | | | |
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| 33. | On the Briggs & Stratton
Engine model number, 92902, the first one or two digits tells the... a. | Basic design series | c. | carburetor type | b. | cubic inch displacement | d. | crankshaft position | | | | |
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| 34. | When diagnosing a failed
engine, you find excessive cylinder wear, a ridge at the top of the cylinder and a lack of cross
hatch on the cylinder wall. These symptoms are most likely a result of... a. | dirt in the engine | c. | overheating | b. | lack of
lubrication | d. | overspeeding | | | | |
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| 35. | If an engine is found to have
failed due to dirt ingestion, you should inspect or check... a. | air cleaner element | c. | crankcase breather operation | b. | oil type | d. | spark plug gap | | | | |
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| 36. | If an air-cooled small gasoline
engine is found to have failed due to overheating, you should check... a. | carburetor adjustment | c. | valve clearance | b. | spark plug gap | d. | antifreeze level | | | | |
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| 37. | To extinguish an oil-based fire
in a small engine repair facility, you should choose which of the following? a. | Type A. | b. | Type B. | c. | Type C. | d. | Type D. | | | | | | | | |
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| 38. | When removing the flywheel of
small-engine, the most appropriate method is... a. | rap on it with a hammer to loosen
it. | b. | use a pry-bar between the flywheel and
crankcase | c. | use the appropriate flywheel puller | d. | use a torch | | |
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| 39. | If a valve is broken off, which
parts will likely become damaged? a. | the crankshaft and connecting
rod | c. | the cylinder head, valve seat, and piston | b. | the camshaft and lifters | d. | the cam lobe and guide | | | | |
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| 40. | A permanent split-capacitor
induction electric motor would be suitable for use on a ____. a. | feed grinder | c. | large irrigation pump | b. | grain auger | d. | variable speed ventilation fan | | | | |
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| 41. | An electric relay is used
to: a. | reduce the current requirements in the load circuit | b. | provide over current protection for the load circuit | c. | permit a control circuit voltage being different than the load circuit
voltage | d. | reduce the conductor size for the load
circuit | | |
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| 42. | A ____ is used to reduce the
voltage from 240 to 120 volts. a. | motor generator
| b. | diode | c. | transformer | d. | time relay | | | | | | | | |
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| 43. | Which of the following motor
types would you select for a 1/2 hp air compressor? a. | capacitor start-induction run | c. | split phase | b. | shaded pole | d. | 3-phase induction | | | | |
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| 44. | A ____ is a light sensing
control. a. | thermostat | c. | hydraulic photostat | b. | photo-cell | d. | time-delay switch | | | | |
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| 45. | The type of electric motor used
in the time clock control circuit is a. | split
phase | b. | synchronous | c. | capacitor | d. | DC | | | | | | | | |
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| 46. | An overloaded motor which is
correctly protected will ____. a. | overheat and burn
out | b. | run faster | c. | run slower without
overheating | d. | stop because the protecting device will open the
circuit | | |
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| 47. | The amount of continuous
“overload” a motor can withstand at its rated Hz and voltage is indicted on the nameplate
as ____. a. | Service Factor | c. | Hertz | b. | Code | d. | Insulation Class | | | | |
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| 48. | A motor which is to run for
over 60 minutes at a time is classified as ____. a. | intermittent
duty | c. | hourly duty | b. | continuous
duty | d. | sporadic duty | | | | |
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| 49. | A capacitor start-capacitor run
motor has ____. a. | capacitors for starting and running circuits | b. | low starting torque | c. | is manufactured in less than 1 HP sizes
only | d. | is designed for easy-to-start loads | | |
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| 50. | Motor enclosures include
drip-proof, explosion-proof and _____. a. | splash-resistant | b. | dust-free | c. | sealed | d. | totally-enclosed | | | | | | | | |
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| 51. | Which electrical term on the
electric motor nameplate identifies the cycles per second? a. | RPM | b. | service factor | c. | hertz | d. | phase | | | | | | | | |
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| 52. | The engine used to power a 3-kW
standby alternator should have a minimum rating of what horsepower? a. | 30 hp | b. | 45 hp | c. | 60 hp | d. | 75 hp | | | | | | | | |
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| 53. | A 4-poles alternator will have
a rotational speed of: a. | 1200 rpm | b. | 1800 rpm | c. | 2400 rpm | d. | 3600 rpm | | | | | | | | |
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| 54. | Which of the following electric
motors would not be called alternating current types? a. | single phase | b. | three phase | c. | universal | d. | DC | | | | | | | | |
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| 55. | The pushbutton stations
controlling the electric motor have “start” and “stop”
switches. a. | the “stop” buttons are in parallel
circuits | b. | the “start” buttons are in parallel
circuits | c. | the connections alternate between stations | d. | the “start” and “stop” buttons are in parallel
circuits | | |
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| 56. | The contacts of a magnetic
motor starter are held together by ____. a. | centrifugal | b. | electromagnetic | c. | atmospheric | d. | centripetal | | | | | | | | |
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| 57. | Which of the following motors
would you select for a 10 hp irrigation pump? a. | Capacitor start-induction
run | c. | Split phase | b. | Shaded
pole | d. | 3-phase induction | | | | |
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| 58. | In a circuit that contain
inductance, the current ____ the voltage. a. | leads | c. | lags | b. | is in phase with | d. | is 33 degrees out of phase with | | | | |
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| 59. | If the shaft of an electric
motor turns a 1725 rpm, and the motor operates from a 60-Hz, ac supply, what type of motor is
it? a. | Synchronous motor | c. | Permanent magnetic motor | b. | Induction motor | d. | Universal motor | | | | |
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| 60. | If a 1/2”=1’ scale
is being used, a line 3-1/4” long on a drawing would represent an actual object _____
long. a. | 3 feet 3 inches | c. | 2 feet 4 inches | b. | 6 feet 6 inches | d. | 5 feet 5 inches | | | | |
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| 61. | Which industrial fuel gas
combined with oxygen provides the hottest neutral flame for cutting metal? a. | acetylene | b. | natural gas | c. | Mapp gas® | d. | propane | | | | | | | | |
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| 62. | A (An) ______ shows the object
in a tilted position so that the top, front, and one side are visible. a. | isometric drawing | c. | perspective drawing | b. | oblique drawing | d. | cross-sectional drawing | | | | |
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| 63. | A (An) _____ is a series of
dashes that indicate the presence of unseen objects. a. | border line | b. | center line | c. | object
line | d. | hidden line | | | | | | | | |
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| 64. | To reduce the brilliance of
light and to screen out harmful infrared and ultra-violet rays given off when performing the
shielding metal arc welding or gas metal arc (SMAW or GMAW) process, the welding helmet should be
equipped with a _____ filter lens. a. | #5 shade | b. | #10 shade | c. | #15 shade | d. | #20 shade | | | | | | | | |
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| 65. | The types of stress of
importance in structural design and analysis are ______. a. | tension, compression, shear, and torsion | b. | rust and corrosion | c. | tension and compression
only | d. | hydration and oxidation | | |
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| 66. | The unit of measure used to
show the flow rate of shielding gas during a GMAW or FCAW process is _____________. a. | cubic feet per hour (cfh) | c. | pounds per square inch (psi) | b. | cubic feet per minute (cfm) | d. | gallons per minute
(gpm) | | | | |
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| 67. | The primary purpose of the
shielding gases emitted around the nozzle tip during the GMAW or FCAW process is to
________. a. | cool the torch handle and nozzle | b. | prevent contamination of the arc, molten puddle, and the solidifying weld from
atmospheric oxygen and nitrogen | c. | cool the hand of the person
welding | d. | rapidly cool the weld joint for proper
fusion | | |
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| 68. | The shielding gases commonly
used with GMAW or dual-shield FCAW processes are _______. a. | argon or carbon monoxide | c. | oxygen and acetylene | b. | argon, carbon dioxide, or helium | d. | oxygen and natural
gas | | | | |
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| 69. | A situation when working
pressure gradually increases on a regulator working pressure gauge after the flame is extinguished
and the torch valves are closed, is known as ________. a. | advance | b. | creep | c. | flash back | d. | reverse-flow | | | | | | | | |
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| 70. | What is the scientific
elemental symbol for the element known as iron?
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| 71. | What is the most common type of
steel used in the construction of agricultural mechanics projects? a. | cast iron | b. | mild steel | c. | tool steel | d. | wrought iron | | | | | | | | |
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| 72. | __________ is the process of
heating two pieces of metal to the point of melting and the melted metals flow
together. a. | Brazing | b. | Soldering | c. | Sweating | d. | Fusion welding | | | | | | | | |
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| 73. | SMAW utilizes a
_________. a. | filler wire and cover gas | c. | flux cored wire | b. | flux coated rod or electrode | d. | tungsten
electrode | | | | |
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| 74. | What type of flame is used for
most oxy-fuel welding procedures when welding on mild steel? a. | acetylene | b. | carburizing | c. | neutral | d. | oxidizing | | | | | | | | |
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| 75. | Which of the following welding
processes is the most similar to MIG (GMAW)?
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| 76. | A depression at the toe of a
weld, which is below the surface of the base metal, is known as ___________. a. | gouging | b. | penetration | c. | root pass | d. | undercut | | | | | | | | |
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| 77. | A fill-freeze electrode such as
an E-6013 can be used to weld in ______ positions. a. | all | c. | flat and horizontal up | b. | flat only | d. | flat, vertical down, and
overhead | | | | |
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| 78. | In SMAW, arc length is
primarily determined by? a. | amperage | c. | electrode
diameter | b. | base metal thickness | d. | type of welding
current | | | | |
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| 79. | The final digit in the AWS
electrode identification system designates? a. | coating and
current | c. | metal type | b. | position | d. | strength | | | | |
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| 80. | Atmospheric air is composed
of: a. | 21% oxygen | b. | 78% oxygen | c. | .9% oxygen | d. | .03% oxygen | | | | | | | | |
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| 81. | The most abundant component in
atmospheric air is: a. | Nitrogen | b. | Oxygen | c. | Argon | d. | Helium | | | | | | | | |
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| 82. | Animal respiration and manure
decomposition release: a. | Carbon
dioxide | c. | Ammonia | b. | Carbon
monoxide | d. | Nitrogen | | | | |
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| 83. | The most toxic gas likely
released from manure storage in confinement systems is: a. | Ammonia | c. | Hydrogen Sulfide | b. | Nitrogen | d. | Methane | | | | |
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| 84. | The most hazardous risk
encountered from entering a manure storage pit is from: a. | Drowning | b. | Chemical burns | c. | Poisoning | d. | Asphyxiation | | | | | | | | |
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| 85. | Respiratory problems for
workers in a dusty confinement building can be adequately addressed by: a. | Wearing a bandana over the nose and mouth | b. | Increasing the ventilation rate | c. | Increasing fat in the ration | d. | Wearing a .3 micron dust mask | | |
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| 86. | The wind chill
factor: a. | Affects the temperature of the environmental controlled
building. | b. | Affects the temperature of the livestock in an environmental
controlled building. | c. | Affects the furnace efficiency in an
environmental controlled building. | d. | Affects the ventilation system in an
environmental controlled building. | | |
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| 87. | Excess water and water vapor in
an environmental building can be controlled by: a. | Increasing the ventilation
rate. | b. | Decreasing the outside air humidity. | c. | Warming the air by fully populating the building with more
livestock. | d. | Installing humidistats with thermostats. | | |
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| 88. | Which of the following
statements are true? a. | As air temperature rises, air can hold
more moisture and its relative humidity increases. | b. | As air temperature rises, air can hold less moisture and its relative humidity
decreases. | c. | As air temperature decreases, air can hold more moisture and its
relative humidity decreases. | d. | Moisture holding capacity of air nearly
doubles for every 20 degree rise in temperature. | | |
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| 89. | When examining a mechanical
ventilation system a negative pressure system is found. This means: a. | The system has many negative or undesirable characteristics. | b. | The fan system sucks (blows air out of the building). | c. | The fans blow and suck air into and out of the building. | d. | Air distribution is controlled by shutters and louvers. | | |
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| 90. | Continuous air slots with
adjustable baffles are most common with what type of ventilation system? a. | Positive pressure systems. | c. | Neutral pressure systems. | b. | Negative pressure systems. | d. | Natural ventilation systems. | | | | |
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| 91. | Manure pit ventilation reduces
manure gas and odors in the animal area. Design pit ventilation to: a. | Supply at least the cold weather ventilation rate. | b. | Supply at least the odor removal ventilation rate. | c. | Supply the warm weather ventilation rate. | d. | Supply the manure gas and pathogen rate. | | |
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| 92. | A good insulating material
has: a. | A low R-value. | c. | A radiant heat loss. | b. | A high dew point. | d. | A high resistance to heat flow. | | | | |
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| 93. | Modified environmental
buildings rely on: a. | Furnaces to provide heat for animal
comfort. | b. | Animal heat to provide for animal comfort. | c. | A combination of furnaces and animal heat to provide for animal
comfort. | d. | Temperate weather conditions to provide for animal
comfort. | | |
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| 94. | Most building materials are
highly permeable to moisture and are not good vapor retarders. However, many moisture problems
can be alleviated by: a. | Installing solid concrete walls grouted
with a vapor retardant mortar. | b. | Installing insulation
board. | c. | Installing a vapor retarder on the cooler side of insulating
materials. | d. | Installing a vapor retarder on the warmer side of insulating
materials. | | |
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| 95. | With regard to fan selection
for a confinement building which statement is most correct? a. | Axial fans are common in livestock buildings. | b. | Radial fans are common in livestock buildings. | c. | Centrifugal fans are common in livestock buildings. | d. | Centrifugal fans operate on a lower static pressure than do axial
fans. | | |
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| 96. | Within a tightly constructed
building and a negative pressure ventilation system: a. | Fan location is important to air quality. | b. | Fan location is unimportant to air quality. | c. | Fans should be located on the windward side to improve
efficiency. | d. | Fans must be located within 25 feet of air
inlets. | | |
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| 97. | The most common type of
thermostat in a livestock building is: a. | Bi-metallic | b. | Liquid filled | c. | Solid
state | d. | Vapor filled | | | | | | | | |
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| 98. | Humidistats have a common
problem with: a. | Sensing humidity rather than temperature. | b. | Maintaining calibration. | c. | Controlling ventilation
rate. | d. | Inert gas interaction. | | |
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| 99. | As you start to move pigs into
a brand new pig nursery, the building seems to be colder than desired; all systems including the
furnace appear to be operating properly. What is the probable cause of the
problem? a. | Low animal density. | c. | Insulation is
wet. | b. | Improper building design. | d. | Over-ventilation. | | | | |
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