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Machine Design

Machine Design
A cotter joint is used to connect two __________ rods.

Parallel
Perpendicular
None of these
Co-axial

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Machine Design
The power transmitted by means of a belt depends upon

All of these
Tension under which the belt is placed on the pulleys
Arc of contact between the belt and the smaller pulley
Velocity of the belt

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Machine Design
The maximum efficiency of a square threaded screw is

(1 + cosφ)/ (1 - sinφ)
(1 - sinφ)/ (1 + cosφ)
(1 + sinφ)/ (1 - sinφ)
(1 - sinφ)/ (1 + sinφ)

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Machine Design
The power transmitted by belt drive depends upon

All of these
Initial belt tension
Belt velocity
Arc of contact

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Machine Design
In the assembly of pulley, key and shaft

Key is made the strongest
Pulley is made the weakest
All the three are designed for equal strength
Key is made the weakest

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Machine Design
The resistance to fatigue of a material is measured by

Ultimate tensile strength
Young's modulus
Elastic limit
Endurance limit

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