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Machine Design

Machine Design
The cross-section of the arm of a bell crank lever is

I-section
Elliptical
Any one of these
Rectangular

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Machine Design
When a nut is tightened by placing a washer below it, the bolt will be subjected to following type of loads

Tension
Shear
Combined loads
Compression

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Machine Design
Which of the following key is preferred for the condition when a large amount of impact type torque is to be transmitted in both direction of rotation?

Feather key
Gib-head key
Woodruff key
Tangent key

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Machine Design
The lower deviation is the algebraic difference between the

Minimum limit and the basic size
Actual size and the corresponding basic size
None of these
Maximum limit and the basic size

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Machine Design
The square threads are usually found on

Spindles of bench vices
Screw cutting lathes
Feed mechanism of machine tools
Railway carriage couplings

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Machine Design
If threads on a bolt are left hand, threads on nut will be

Could be left or right hand
Right hand with fine pitch
Left hand with same pitch
Right hand with same pitch

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