NIMS Turning sample test Exam ACTUAL
QUESTIONS AND CORRECT ANSWERS
1) Which of the following statements best defines cutting speed:
a) Cutting speed is based on RPM and is the amount a times a tool revolves in 1 second
b) Cutting speed is based on the diameter of the tool and is given in surface revolutions per
minute
c) Cutting speed is based on the distance the work moves past the tool based on the number
of feet that passes the tool in one minute and is given in surface feet per minute
d) Cutting speed is based on revolutions per diameter of the tool and is given in feet per inch
- CORRECT ANSWER c) Cutting speed is based on the distance the work moves past
the tool based on the number of feet that passes the tool in one minute and is given in surface
feet per minute
2) Which of the following statements best defines feed?
a) The machine movement that causes a tool to cut into or along the surface of a work piece
b) The distance the work piece moves past the tool in one minute
c) The revolution of the tool per minute
d) The diameter of the tool correlated to the distance the tool moves in one second -
CORRECT ANSWER a) The machine movement that causes a tool to cut into or along
the surface of a work piece
3) When calculating the RPM for a turning operation, the machinist uses _________ instead
of the diameter of the tool.
a) Tool nose radius
b) The diameter of the work piece
c) Cutter speed compensation
d) Surface feet per minute - CORRECT ANSWER b) The diameter of the work piece
4) What is the RPM needed to drill a ∅.750" hole in mild steel with a cutting speed of 100
SFM on 3.50" diameter stock (use 3.82 for the constant)?
a) 262.5 RPM
,b) 286.5 RPM
c) 123 RPM
d) 509 RPM - CORRECT ANSWER d) 509 RPM
5) A part is being turned at 250 RPM with a feed rate of .008 inches per revolution. How long
will it take to make one pass if the part is 10.625 inches long?
a) 4.25 minutes
b) 5.30 minutes
c) 1.75 minutes
d) 2.10 minutes - CORRECT ANSWER b) 5.30 minutes
6) Identify the proper formula for determining the RPM for a turning operation:
a) (CS • 3.82) / D
b) D / (CS/3.82)
c) (D • 3.82) / CS
d) (D •CS) / 3.82 - CORRECT ANSWER a) (CS • 3.82) / D
7) How is a feed rate designated on a lathe?
a) Feet per second
b) Inches per minute
c) Feet per revolution
d) Inches per revolution - CORRECT ANSWER d) Inches per revolution
8) The feed rate is at .008 IPR. How many RPM will it take to move the tool a distance of
3.600 inches in a minute?
a) 288 RPM
b) 225 RPM
c) 576 RPM
d) 450 RPM - CORRECT ANSWER d) 450 RPM
, 9) Which of the following formulas is the correct formula for determining the time to make
one cut across a given distance? {T = time f = feed (IPR) L = length of cut (inches) N =
spindle speed (RPM)}
a) T = (fN) / L
b) T = f / NL
c) T = L / (fN)
d) T = (Lf) / N - CORRECT ANSWER c) T = L / (fN)
10) Which of the following shapes cannot be held adequately by a 3-jaw universal chuck:
a) Hexagon
b) Rounds
c) Octagon
d) All of the above
e) Only a and c - CORRECT ANSWER c) Octagon
11) The included angle of a lathe center measures:
a) 30°
b) 45°
c) 60°
d) 75° - CORRECT ANSWER c) 60°
12) The primary advantage of turning between centers is that:
a) The work piece can be turned end for end without losing concentricity
b) Each end can be total faced off in one setup
c) The part is totally clamped (360° of contact)
d) Chatter is reduced on long work pieces - CORRECT ANSWER a) The work piece
can be turned end for end without losing concentricity
13) Identify the statement that is not characteristic of a lathe steady rest:
QUESTIONS AND CORRECT ANSWERS
1) Which of the following statements best defines cutting speed:
a) Cutting speed is based on RPM and is the amount a times a tool revolves in 1 second
b) Cutting speed is based on the diameter of the tool and is given in surface revolutions per
minute
c) Cutting speed is based on the distance the work moves past the tool based on the number
of feet that passes the tool in one minute and is given in surface feet per minute
d) Cutting speed is based on revolutions per diameter of the tool and is given in feet per inch
- CORRECT ANSWER c) Cutting speed is based on the distance the work moves past
the tool based on the number of feet that passes the tool in one minute and is given in surface
feet per minute
2) Which of the following statements best defines feed?
a) The machine movement that causes a tool to cut into or along the surface of a work piece
b) The distance the work piece moves past the tool in one minute
c) The revolution of the tool per minute
d) The diameter of the tool correlated to the distance the tool moves in one second -
CORRECT ANSWER a) The machine movement that causes a tool to cut into or along
the surface of a work piece
3) When calculating the RPM for a turning operation, the machinist uses _________ instead
of the diameter of the tool.
a) Tool nose radius
b) The diameter of the work piece
c) Cutter speed compensation
d) Surface feet per minute - CORRECT ANSWER b) The diameter of the work piece
4) What is the RPM needed to drill a ∅.750" hole in mild steel with a cutting speed of 100
SFM on 3.50" diameter stock (use 3.82 for the constant)?
a) 262.5 RPM
,b) 286.5 RPM
c) 123 RPM
d) 509 RPM - CORRECT ANSWER d) 509 RPM
5) A part is being turned at 250 RPM with a feed rate of .008 inches per revolution. How long
will it take to make one pass if the part is 10.625 inches long?
a) 4.25 minutes
b) 5.30 minutes
c) 1.75 minutes
d) 2.10 minutes - CORRECT ANSWER b) 5.30 minutes
6) Identify the proper formula for determining the RPM for a turning operation:
a) (CS • 3.82) / D
b) D / (CS/3.82)
c) (D • 3.82) / CS
d) (D •CS) / 3.82 - CORRECT ANSWER a) (CS • 3.82) / D
7) How is a feed rate designated on a lathe?
a) Feet per second
b) Inches per minute
c) Feet per revolution
d) Inches per revolution - CORRECT ANSWER d) Inches per revolution
8) The feed rate is at .008 IPR. How many RPM will it take to move the tool a distance of
3.600 inches in a minute?
a) 288 RPM
b) 225 RPM
c) 576 RPM
d) 450 RPM - CORRECT ANSWER d) 450 RPM
, 9) Which of the following formulas is the correct formula for determining the time to make
one cut across a given distance? {T = time f = feed (IPR) L = length of cut (inches) N =
spindle speed (RPM)}
a) T = (fN) / L
b) T = f / NL
c) T = L / (fN)
d) T = (Lf) / N - CORRECT ANSWER c) T = L / (fN)
10) Which of the following shapes cannot be held adequately by a 3-jaw universal chuck:
a) Hexagon
b) Rounds
c) Octagon
d) All of the above
e) Only a and c - CORRECT ANSWER c) Octagon
11) The included angle of a lathe center measures:
a) 30°
b) 45°
c) 60°
d) 75° - CORRECT ANSWER c) 60°
12) The primary advantage of turning between centers is that:
a) The work piece can be turned end for end without losing concentricity
b) Each end can be total faced off in one setup
c) The part is totally clamped (360° of contact)
d) Chatter is reduced on long work pieces - CORRECT ANSWER a) The work piece
can be turned end for end without losing concentricity
13) Identify the statement that is not characteristic of a lathe steady rest:
