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Mechanical Engineering - Machine Design

Exercise : Machine Design - Section 4
46.
A tapered key which fits in a key way in the hub and the bottom of which is shaped to fit the curved surface of the shaft, is known as hollow saddle key.
Correct
Incorrect
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.
In levers, leverage is the ratio of
load lifted to the effort applied
mechanical advantage to the velocity ratio
load arm to the effort arm
effort arm to the load arm
Answer: Option
Explanation:
No answer description is available. Let's discuss.
48.
The diameter of washer is generally taken bigger than the nut size.
True
False
Answer: Option
Explanation:
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49.
Which of the following statement is wrong?
The pitch of rivets is obtained by equating the tearing resistance of the plate to the shearing resistance of the rivets
The pitch of rivets should not be less than 2 d, where d is the diameter of rivet hole
The maximum value of the pitch of rivets for a longitudinal joint of a boiler, as per I.B.R., is given by Pmax = C.t + 41.28 mm
According to I.B.R., the thickness of butt strap shall not be less than 5 mm
Answer: Option
Explanation:
No answer description is available. Let's discuss.
50.
If a shaft made from ductile material is subjected to combined bending and twisting moment, calculations based on which one of the following failure theories will give the most conservative value?
Maximum principal stress theory
Maximum shear stress theory
Maximum strain energy theory
Maximum distortion energy theory
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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