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Machine Design

Machine Design
The draw of cotter need not exceed

20 mm
3 mm
5 mm
10 mm

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

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

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Machine Design
A steel containing up to 0.15% carbon is known as

Medium carbon steel
Mild steel
Dead mild steel
High carbon steel

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Machine Design
Which one of the following loading is considered for the design of axles?

Twisting moment only
Bending moment only
Combined bending moment and twisting moments
Combined action of bending moment, twisting moment and axial thrust

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Machine Design
For crank shaft bearings, the ratio of the length of the journal to its diameter is_________.

Equal to 1
Less than unity
None of these
Greater than unity

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Machine Design
An elastic bar is fixed at the upper end and loaded at the lower end by a falling weight. The shock load produced can be reduced by

Decreasing the modulus of elasticity of the bar
Increasing the length of bar
All of these
Decreasing the cross-sectional area of the bar

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