Exercise: Machine Design

Questions for: Machine Design

A fast and loose pulley drive is used when
A:
shafts are arranged parallel and rotate in the opposite directions
B:
shafts are arranged parallel and rotate in the same directions
C:
shafts are arranged at right angles and rotate in one definite direction
D:
driven shaft is to be started or stopped whenever desired without interferring with the driving shaft
Answer: D
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The pressure angle of a cam is the angle between the direction of the follower motion and a normal to the pitch curve.
A:
Correct
B:
Incorrect
C:
D:
Answer: A
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The helix angle for double helical gears may be made up to
A:
45°
B:
60°
C:
75°
D:
90°
Answer: A
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A key made from a cylindrical disc having segmental cross-section, is known as
A:
feather key
B:
gib-head key
C:
wood ruff key
D:
flat saddle key
Answer: C
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The radial distance from the top of a tooth to the bottom of a tooth is called clearance
A:
True
B:
False
C:
D:
Answer: A
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