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WorksheetsMachine Design - Part 1
Total questions: 20
Worksheet time: 30mins
Which type of gear failure represents surface-based failure?
Destructive pitting
Corrosion
Scoring
All of the above
When a hole is always smaller than the part being placed inside of it, what type of fit is this?
Clearance
Interference
Transition
Tension
The overall width of a part is dimensioned as 3.00 ± 0.02. What is the specified dimension?
3.00
3.02
0.02
0.04
The diameter of a hole is 0.50 ± 0.02. The pin that is inserted into the hole has diameter 0.53 ± 0.02. Which term best describes this fit?
Clearance
Interference
Transition
Variance
Which type of tolerance is used for the depth of the counterbore?
Limit dimensions
Bilateral tolerance
Unilateral tolerance
Religious tolerance
In open belt,
One of the Pulley runs slower than other pulley
Both pulleys rotate in the same direction
Both pulleys rotate in opposite direction
Flat belts are used for
Light Drives
Moderate Drives
Heavy Drives
None of these
The tension caused by centrifugal force on the belts
Decrease power transmission
Increases power transmission
Doesn't effect power transmission
None of the above
Creep in belt drive is due to ...
Weak material of the belt
Weak material of the pulley
Uneven extensions and contractions of the belt when it passes from tight slack side
None of these
In V belt drive, belt touches
At bottom
At sides only
Both at bottom & sides
Could touch anywhere
Which one is a positive drive?
Rope drive
V belt drive
Crossed belt drive
Chain drive
What is is the purpose of the pitch in roller chains?
To calculate the chain speed
To define the distance between the pins connecting adjacent links
To adjust the chain tension
To determine the chain length
The efficiency of a chain drive as compared toa belt drive is....
low
high
both (A) and (B)
none
What is the purpose of a tensioning device in chain drives?
To adjust the chain length
To increase the chain speed
To adjust for slack in the chain
To lubricate the chain
Find the gear ratio of the given simple gear train?
5
0.5
4
3
when you increase torque?
What is the gear ratio with a driving gear with 40 teeth and a driven gear with 8 teeth?
5
1/5
5/8
8/5
Define Ergonomics
The science of designing computers
This was not covered in lecture
The science of designing equipment and workplace for a comfortable and safe environment
The science of designing chairs
