Machine Design Quiz Form
Test your knowledge of machine design concepts and principles with this quiz.
1. Which of the following is NOT a type of fit in machine design?
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Clearance fit
Interference fit
Transition fit
Tight fit
2. What is the main purpose of a key in a shaft-hub assembly?
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To increase friction
To transmit torque
To reduce weight
To align parts
3. Select all materials commonly used for making gears.
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Cast iron
Bronze
Plastic
Glass
Other
4. What is the formula for calculating the factor of safety (FoS)?
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Maximum load / Working load
Working load / Maximum load
Yield strength / Allowable stress
Allowable stress / Yield strength
5. Briefly explain what a rolling bearing is used for in machines.
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6. Which type of thread is commonly used for power transmission in lead screws?
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Square thread
Acme thread
Buttress thread
V thread
7. Match the following machine elements to their primary function.
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Rows
Transmit motion
Support load
Reduce friction
Gear
1
2
3
Bearing
4
5
6
Shaft
7
8
9
8. What is the main advantage of using a helical gear over a spur gear?
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Higher load capacity
Lower cost
Simpler manufacturing
No lubrication needed
9. Calculate the torque required to raise a 500 N load with a screw jack (lead = 5 mm, mean diameter = 30 mm, friction angle = 5°). Show your calculation steps.
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10. Select the failure mode most commonly associated with fatigue in rotating shafts.
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Brittle fracture
Creep
Surface wear
Crack initiation and propagation
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