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Machine Design

Machine Design
Two shafts of the same length and material are joined in series. If the ratio of their diameters is 2, then the ratio of their angles of twist will be

8
2
4
16

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

Medium
Smaller
Greater
None of these

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Machine Design
In radial cams, the follower moves

Along the cam axis
In a direction perpendicular to the cam axis
In a direction parallel to the cam axis
In any direction irrespective of cam axis

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

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Machine Design
The groove angle of pulleys for V-belt is

More than 400
420 to 450
340 to 360
300 to 320

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Machine Design
The piston rod of a steam engine is usually connected to the cross-head by means of

Universal joint
Cotter joint
Knuckle joint
Bolted joint

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