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Mechanical Engineering - Machine Design

Exercise : Machine Design - Section 10
41.
A jam nut is a locking device in which
a thinner nut is tightened down over a thicker or main nut and the main nut is tightened against the thinner nut by loosening
a slot is cut in line with the centre of each face and a split pin passes through two slots in the nut and a hole in the bolt, so that a positive lock is obtained unless the pin shears
a slot is cut about half way through the nut and a small screw is tightened between the nut and the bolt in order to produce more friction
the bottom cylindrical portion is recessed to receive the tip of the locking set screw
Answer: Option
Explanation:
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42.
The difference between the upper limit and lower limit of a dimension is called
nominal size
basic size
actual size
tolerance
Answer: Option
Explanation:
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43.
The algebraic difference between the actual size and the corresponding basic size is called actual deviation.
Agree
Disagree
Answer: Option
Explanation:
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44.
The stiffness of a closely coiled helical spring subjected to an axial load W is equal to (where G = Modulus of rigidity, and n = Number of active coils)
Answer: Option
Explanation:
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45.
The average shear stress in the hollow shaft is smaller than the average shear stress in the solid shaft.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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