Name: 
 

1998 Arkansas District Agricultural Mechanics Test



Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 

 1. 

The metal working tool used to cut external threads is called a(n) _______.
a.
tap
b.
chuck
c.
die
d.
bolt threader
 

 2. 

When using a drill press, the proper drilling speed (RPM) for metal is determined by the _______.
a.
thickness of the metal
c.
horsepower of the drill press motor
b.
diameter of the drill bit
d.
type of cutting oil used
 

 3. 

When drilling long stock in a drill press, the stock should be placed to the ______.
a.
operator’s left
c.
side of the drill press
b.
operator’s right
d.
Any of these are correct
 

 4. 

When drilling metal in a drill press, the metal should be ______.
a.
center punched
c.
lubricated
b.
securely fastened
d.
All of these are correct
 

 5. 

The _____ type of tap would be used to thread a “blind” hole.
a.
bottoming
c.
taper
b.
plug
d.
All of these are correct
 

 6. 

The size of the drill press is determined by ______.
a.
the horsepower of the motor
b.
the maximum diameter drill bit that can be used
c.
the area of the drilling table
d.
None of these are correct
 

 7. 

A ______ would be the correct tool to use to locate the center of a piece of round metal.
a.
center head
b.
miter head
c.
protractor head
d.
steel ruler
 

 8. 

The size of a twist drill bit may be indicated by _____.
a.
number
c.
fraction
b.
letter
d.
All of these are correct
 

 9. 

Bolts and nuts with NC threads are normally used on machinery where _____.
a.
there is little vibration
c.
the bolts must be removed often
b.
there is a lot of vibration
d.
close tolerances are not required
 

 10. 

A die stamped, 1/2” NC 13 will _____.
a.
thread a hole 1/2 inch deep
c.
cut 13 threads per inch on a rod
b.
thread a hole 13 inches deep
d.
None of these are correct
 

 11. 

The grinding wheels o a 6 inch, 1725 RPM bench grinder would have a speed (surface feet per minute, SFPM) of ____.
a.
1,278
b.
2,578
c.
3,854
d.
30,909
 

 12. 

A 60 grit grinding wheel would be classified as a ____ grit wheel.
a.
Coarse
b.
Medium
c.
Fine
d.
Very fine
 

 13. 

The tool rest on a grinder should be no more than_____ -inch away from the grinding wheel.
a.
1/2
b.
1/4
c.
1/8
d.
1/16
 

 14. 

The cutting lips of a twist drill should be shaped to form a ____ -degree included angle.
a.
30
b.
59
c.
118
d.
180
 

 15. 

When fitting a drill bit with a grinder, the bit should be cooled often to prevent _____.
a.
drawing the bit’s temper
c.
damage to the grinding wheel
b.
keep the grinding wheel clean
d.
None of these are correct
 

 16. 

The size of a bench grinder is determined by the ______.
a.
diameter of the arbor shaft
c.
diameter of the grinding of the wheel
b.
horsepower of the motor
d.
All of these are correct
 

 17. 

A grinding wheel should be discarded when it is worn to ______ of its original diameter.
a.
1/8
b.
1/4
c.
1/2
d.
3/4
 

 18. 

A cold chisel should be sharpened to a _____ degree angle.
a.
45
b.
120
c.
75
d.
90
 

 19. 

The _____ determines the maximum recommended RPM for a grinding wheel.
a.
grit size
c.
type of bond
b.
type of abrasive
d.
None of these are correct
 

 20. 

Grinding wheels are sized by the _______.
a.
diameter of the wheel
c.
maximum recommended RPM
b.
width of the wheel
d.
All of these are correct
 

 21. 

A drawing that shows three separate views of the same object is a(n)_______ drawing.
a.
isometric
b.
orthographic
c.
oblique
d.
pictorial
 

 22. 

The ____ scale used fractions of an inch to represent one foot.
a.
architects
b.
fractional
c.
civil engineers
d.
foot rule
 

 23. 

_______ is an example of a computer-aided-drafting software program.
a.
AutoCAD
b.
Quattro Pro
c.
Excel
d.
Authorware
 

 24. 

Oblique and isometric drawings are examples of _______ drawings.
a.
scaled
b.
orthographic
c.
pictorial
d.
elliptical
 

 25. 

_____ are used with the T-square to draw angled lines in mechanical drafting.
a.
Dividers
b.
Compasses
c.
Triangles
d.
Bow pens
 

 26. 

A _____ line is used to show parts of an object that are not visible.
a.
break
b.
dimension
c.
extension
d.
hidden
 

 27. 

_______ lines are used with dimension lines to indicate the extent of a measurement.
a.
Extension
b.
Hidden
c.
Border
d.
Object
 

 28. 

A ____ line is used to indicate what part of the plan a note refers to.
a.
dimension
b.
extension
c.
call-out
d.
leader
 

 29. 

A _____ is a freehand drawing of an object.
a.
blueprint
c.
orthographic projection
b.
sketch
d.
figure
 

 30. 

A(n) ____ grade pencil should be used to make mechanical drawings.
a.
B
b.
HB
c.
F
d.
2H
 

 31. 

When welding with an oxyacetylene welding outfit, the acetylene cylinder valve should never be opened more than _____ turn(s).
a.
3/4
b.
1 1/2
c.
2
d.
2 1/2
 

 32. 

The maximum safe working pressure for acetylene is ___ psi.
a.
5
b.
10
c.
15
d.
20
 

 33. 

The safe maximum flow rate from a 140 cubic foot acetylene cylinder is _____ cubic feet per hour.
a.
10
b.
15
c.
20
d.
25
 

 34. 

A Number _____ shade filter lens should be worn when cutting 1/2 inch steel with an oxyacetylene torch.
a.
3
b.
4
c.
5
d.
10
 

 35. 

The recommended tip size for welding mild steel with the oxyacetylene outfit is based on the ______.
a.
Oxygen and acetylene pressure settings
c.
Flame type
b.
Thickness of the metal
d.
All of these are correct
 

 36. 

A(n) ____ flame is used when hardsurfacing with an oxyacetylene outfit.
a.
Excess acetylene
b.
Neutral
c.
Oxidizing
d.
Hardening
 

 37. 

A(n) _____ flame should be used when cutting cast iron with the oxyacetylene cutting torch.
a.
Excess acetylene
b.
Neutral
c.
Oxidizing
d.
Hardening
 

 38. 

A(n) ____ flame should be used when fusion welding mild steel.
a.
Excess acetylene
b.
Neutral
c.
Oxidizing
d.
Hardening
 

 39. 

Acetylene hoses and fittings are _______.
a.
Red with right-hand threads
c.
Red with left-hand threads
b.
Green with right-hand threads
d.
Red with right-hand threads
 

 40. 

The size of a oxyacetylene welding tip is based on the ______.
a.
Diameter of the orifice
c.
Length of the tip
b.
Diameter of the tube
d.
none of these are correct
 

 41. 

______-core solder should be used when soldering electronic equipment.
a.
Acid
b.
Metallic
c.
Rosin
d.
Specialty
 

 42. 

_______ is a type of non-fusion welding.
a.
Soldering
c.
None of these are correct
b.
Brazing
d.
Soldering and Brazing
 

 43. 

The melting point of solder is less than _____ degrees F.
a.
200
b.
400
c.
600
d.
800
 

 44. 

The ____ cold chisel is used for general purpose metal working.
a.
flat
b.
diamond point
c.
cape
d.
half-round
 

 45. 

_____ may be drilled on a drill press without using any lubricant.
a.
Cast iron
c.
Tool steel
b.
Aluminum
d.
None of these are correct
 

 46. 

A ____ is used to fasten wood to metal.
a.
stove bolt
b.
carriage bolt
c.
rivet
d.
machine
 

 47. 

A complete set of taps, dies, die stocks and tap wrenches is called a ______.
a.
machinist’s kit
b.
thread set
c.
screw plate
d.
ratchet set
 

 48. 

In an oxyacetylene welding outfit, working pressure are set by adjusting the _____.
a.
regulators
c.
flashback arresters
b.
torch valves
d.
cylinder valves
 

 49. 

Acetylene belongs to the ______ family of chemical compounds.
a.
benzene
c.
hydrocarbon
b.
normal heptane
d.
None of these are correct
 

 50. 

When using a hand hacksaw, _____ teeth should always be in contact with the metal being cut.
a.
2
b.
4
c.
6
d.
8
 



 
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