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Machine Design

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

Equal to
Less than
None of these
More than

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Machine Design
Two closely coiled helical springs with stiffness k₁ and k₂ respectively are connected in series. The stiffness of an equivalent spring is given by

(k₁ - k₂)/ (k₁ + k₂)
(k₁ - k₂)/ (k₁ k₂)
(k₁ + k₂)/ (k₁ k₂)
(k₁ k₂)/ (k₁ + k₂)

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Machine Design
According to Indian standards, the diameter of rivet hole is made larger than the basic size of rivet by

2 mm for rivet diameter from 39 mm to 48 mm
0.5 mm up to rivet diameter of 24 mm
All of these
1 mm for rivet diameter from 27 mm to 36 mm

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Machine Design
For maximum power, the velocity of the belt will be

√(T/m)
√(T/2m)
None of these
√(T/3m)

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Machine Design
A locking device in which the bottom cylindrical portion is recessed to receive the tip of the locking set screw, is called

Sawn nut
Ring nut
Jam nut
Castle nut

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Machine Design
The deflection of a cantilever beam under load W is 8. If its width is halved, then the deflection under load W will be

43929
44045
44047
43869

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