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Machine Design

Machine Design
The material used for brake lining should have __________ coefficient of friction.

None of these
Moderate
Low
High

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Machine Design
A bolt is designed on the basis of __________ with a large factor of safety.

Direct bending stress
Direct shear stress
Direct compressive stress
Direct tensile stress

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Machine Design
When a helical compression spring is cut into halves, the stiffness of the resulting spring will be

Same
One-fourth
One-half
Double

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Machine Design
The objective of 'crowning' of the flat pulleys of belt drive is to

Prevent the belt joint from damaging the belt surface
Increase the belt velocity
Prevent the belt from running off the pulley
Increase the power transmission capacity

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Machine Design
Which of the following welded joint is designed for shear strength?

Transverse fillet welded joint
Parallel fillet welded joint
Butt welded joint
All of these

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Machine Design
According to I.B.R., the thickness of the boiler shell should not be less than

5 mm
6 mm
7 mm
4 mm

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