Michigan Machinist Level 2 Exam
Practice Questions And Correct Answers
(Verified Answers) Plus Rationale 2026
Q&A| Instant Download Pdf
1. Which type of fit allows for slight clearance between the shaft and
hole, ensuring easy assembly?
A. Interference fit
B. Transition fit
C. Clearance fit
D. Force fit
A clearance fit is designed to provide a small amount of space
between mating parts, allowing them to slide together easily
without excessive force.
2. When using a micrometer, what is the primary purpose of the
thimble?
A. To lock the spindle
B. To measure depth
C. To read fine measurements
D. To calibrate the frame
The thimble on a micrometer rotates to move the spindle
incrementally, enabling the machinist to read precise measurements,
usually in thousandths of an inch or hundredths of a millimeter.
3. In CNC programming, the code "G00" typically indicates:
A. Linear interpolation at feed rate
B. Circular interpolation
C. Rapid positioning
D. Tool change
G00 is the standard G-code for rapid movement of the machine tool
, to a specified coordinate without cutting, used to minimize non-
cutting time.
4. What is the main advantage of using carbide tooling over high-speed
steel (HSS) tooling?
A. Lower cost
B. Higher cutting speed and wear resistance
C. Easier resharpening
D. Flexibility under high heat
Carbide tools can withstand higher temperatures and maintain
sharpness longer than HSS, allowing faster machining and longer
tool life in production settings.
5. Which machining process primarily removes material using abrasives?
A. Milling
B. Drilling
C. Grinding
D. Turning
Grinding uses an abrasive wheel to remove small amounts of
material with high precision, achieving smooth surface finishes and
tight tolerances.
6. In lathe operations, what is the primary purpose of a steady rest?
A. To hold cutting tools
B. To speed up cutting
C. To support long, slender workpieces
D. To measure diameters
A steady rest provides support at a point along the workpiece,
preventing deflection or vibration during turning of long shafts or
rods.
7. During milling, which type of cutter is typically used for making slots?
A. Face mill
B. End mill
C. Fly cutter
D. Slab mill
End mills have cutting edges on the end and sides, making them ideal
for slotting, profiling, and plunge cutting operations.
, 8. What does the term “tolerance” refer to in machining?
A. Material hardness
B. Tool angle
C. Permissible variation from nominal dimension
D. Cutting speed
Tolerance defines the acceptable range of variation in a
manufactured part’s dimensions to ensure proper fit and function.
9. Which measurement tool is best for checking internal diameters?
A. Micrometer
B. Vernier caliper
C. Bore gauge
D. Dial indicator
A bore gauge is specifically designed to measure the internal
diameter of holes accurately, often in combination with a
micrometer for reading the measurement.
10. What is the purpose of coolant in machining operations?
A. Increase tool wear
B. Reduce cutting speed
C. Control heat and remove chips
D. Lubricate workpiece only
Coolants reduce friction and heat generated during cutting, improve
tool life, and help evacuate chips from the cutting zone.
11. Which type of lathe threading involves cutting external threads
using a single-point tool?
A. Die threading
B. Tap threading
C. Single-point threading
D. Thread milling
Single-point threading on a lathe uses a tool to gradually cut threads
along the workpiece, providing precise control over thread
dimensions.
12. The term “runout” in machining refers to:
A. Tool wear
B. Deviation of a rotating part from true axis
C. Cutting speed variation
Practice Questions And Correct Answers
(Verified Answers) Plus Rationale 2026
Q&A| Instant Download Pdf
1. Which type of fit allows for slight clearance between the shaft and
hole, ensuring easy assembly?
A. Interference fit
B. Transition fit
C. Clearance fit
D. Force fit
A clearance fit is designed to provide a small amount of space
between mating parts, allowing them to slide together easily
without excessive force.
2. When using a micrometer, what is the primary purpose of the
thimble?
A. To lock the spindle
B. To measure depth
C. To read fine measurements
D. To calibrate the frame
The thimble on a micrometer rotates to move the spindle
incrementally, enabling the machinist to read precise measurements,
usually in thousandths of an inch or hundredths of a millimeter.
3. In CNC programming, the code "G00" typically indicates:
A. Linear interpolation at feed rate
B. Circular interpolation
C. Rapid positioning
D. Tool change
G00 is the standard G-code for rapid movement of the machine tool
, to a specified coordinate without cutting, used to minimize non-
cutting time.
4. What is the main advantage of using carbide tooling over high-speed
steel (HSS) tooling?
A. Lower cost
B. Higher cutting speed and wear resistance
C. Easier resharpening
D. Flexibility under high heat
Carbide tools can withstand higher temperatures and maintain
sharpness longer than HSS, allowing faster machining and longer
tool life in production settings.
5. Which machining process primarily removes material using abrasives?
A. Milling
B. Drilling
C. Grinding
D. Turning
Grinding uses an abrasive wheel to remove small amounts of
material with high precision, achieving smooth surface finishes and
tight tolerances.
6. In lathe operations, what is the primary purpose of a steady rest?
A. To hold cutting tools
B. To speed up cutting
C. To support long, slender workpieces
D. To measure diameters
A steady rest provides support at a point along the workpiece,
preventing deflection or vibration during turning of long shafts or
rods.
7. During milling, which type of cutter is typically used for making slots?
A. Face mill
B. End mill
C. Fly cutter
D. Slab mill
End mills have cutting edges on the end and sides, making them ideal
for slotting, profiling, and plunge cutting operations.
, 8. What does the term “tolerance” refer to in machining?
A. Material hardness
B. Tool angle
C. Permissible variation from nominal dimension
D. Cutting speed
Tolerance defines the acceptable range of variation in a
manufactured part’s dimensions to ensure proper fit and function.
9. Which measurement tool is best for checking internal diameters?
A. Micrometer
B. Vernier caliper
C. Bore gauge
D. Dial indicator
A bore gauge is specifically designed to measure the internal
diameter of holes accurately, often in combination with a
micrometer for reading the measurement.
10. What is the purpose of coolant in machining operations?
A. Increase tool wear
B. Reduce cutting speed
C. Control heat and remove chips
D. Lubricate workpiece only
Coolants reduce friction and heat generated during cutting, improve
tool life, and help evacuate chips from the cutting zone.
11. Which type of lathe threading involves cutting external threads
using a single-point tool?
A. Die threading
B. Tap threading
C. Single-point threading
D. Thread milling
Single-point threading on a lathe uses a tool to gradually cut threads
along the workpiece, providing precise control over thread
dimensions.
12. The term “runout” in machining refers to:
A. Tool wear
B. Deviation of a rotating part from true axis
C. Cutting speed variation
