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Machine Design

Machine Design
The helix angle for single helical gears ranges from

20° to 35°
10° to 15°
15° to 20°
35° to 50°

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Machine Design
In the assembly of pulley, key and shaft

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

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

Bolted joint
Universal joint
Knuckle joint
Cotter joint

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Machine Design
In radial cams, the follower moves

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

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Machine Design
The pitch of threads on a Jock nut in comparison to pitch of nut is

Same
Coarser
Very fine
Finer

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Machine Design
The diameter of the rivet hole is usually __________ the nominal diameter of the rivet.

Less than
Equal to
More than
None of these

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