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Machine Design

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

Castle nut
Ring nut
Jam nut
Sawn nut

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Machine Design
In order to have smooth operation, the minimum number of teeth on the smaller sprocket, for moderate speeds, should be

15
21
17
25

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Machine Design
Which of the following property is essential for spring materials?

Stiffness
Plasticity
Ductility
Resilience

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

Oldham coupling
Universal joint
Knuckle joint
Cotter joint

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Machine Design
The size of a gear is usually specified by

Pitch circle diameter
Pressure angle
Diametral pitch
Circular pitch

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Machine Design
The maximum stress due to stress concentration in a bar having circular transverse hole, as compared to its static stress without hole will be

Same in both cases
2 times more
4 times more
3 times more

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