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Machine Design

Machine Design
A hollow shaft will transmit a __________ torque than a solid shaft of the same mass and same material.

Medium
Greater
Smaller
None of these

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Machine Design
Which of the following bearing is preferred for oscillating conditions?

Angular contact single row ball bearing
Taper roller bearing
Double row roller bearing
Needle roller bearing

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Machine Design
A locking device extensively used in automobile industry is a

Jam nut
Sawn nut
Ring nut
Castle nut

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Machine Design
The modulus of elasticity for mild steel is approximately equal to

210 kN/mm²
110 kN/mm²
100 kN/mm²
80 kN/mm²

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Machine Design
If T₁ and T₂ are the tensions on the tight and slack sides of the belt respectively, and Tc is the centrifugal tension, then initial tension in the belt is equal to

(T₁ + T₂ + Tc)/2
T₁ - T₂ + Tc
(T₁ - T₂ + Tc)/2
T₁ + T₂ + Tc

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Machine Design
All stresses produced in a belt are

Shear stresses
Compressive stresses
Tensile stresses
Both tensile and compressive stresses

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