Mechanical Engineering - Machine Design

36.
In a crossed belt drive, the shafts are arranged parallel and rotate in the same directions.
Correct
Incorrect
Answer: Option
Explanation:
No answer description is available. Let's discuss.

37.
In worm gears, the angle between the tangent to the pitch helix and an element of the cylinder, is known as
helix angle
pressure angle
pitch lead angle
none of these
Answer: Option
Explanation:
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38.
Idler pulley is used for
increasing velocity ratio
for applying tension
changing the direction of motion of belt
all of these
Answer: Option
Explanation:
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39.
The bell crank levers used in railway signalling arrangement are of third type levers.
True
False
Answer: Option
Explanation:
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40.
When spring index increases, the value of Wahl's stress factor
increases linearly
decreases linearly
remains same
increases exponentially
Answer: Option
Explanation:
No answer description is available. Let's discuss.