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Machine Design

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

More than
Equal to
Less than
None of these

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Machine Design
When the pulley or other mating piece is required to slide along the shaft, a __________ sunk key is used.

Rectangular
Parallel
Square
None of these

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Machine Design
I.S. specifies following total number of grades of tolerances

16
20
18
22

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Machine Design
A self locking screw has

Course threads
Fine threads
Coefficient of friction is greater than tangent of load angle
Hole for inserting split pin

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Machine Design
Resilience of a material is important, when it is subjected to

Thermal stresses
Combined loading
Shock loading
Fatigue

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Machine Design
When a closely coiled helical spring is subjected to a couple about its axis, the stress induced in the wire material of the spring is

Direct shear stress only
A combination of bending stress and direct shear stress
A combination of torsional shear stress and bending
Bending stress only

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