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Machine Design

Machine Design
If a spring is cut down into two springs, the stiffness of cut springs will be

Half
Same
None of these
Double

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Machine Design
In block brakes, the ratio of shoe width to wheel diameter is taken between

0.25 and 0.50
0.50 and 0.75
0.1 and 0.25
0.75 and 1

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Machine Design
The size of a gear is usually specified by

Circular pitch
Diametral pitch
Pressure angle
Pitch circle diameter

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Machine Design
The dynamic tooth load is due to

Irregularities in tooth profiles
Inaccuracies of tooth spacing
All of these
Deflections of teeth under load

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Machine Design
The yield point in static loading is __________ as compared to fatigue loading.

None of these
Lower
Same
Higher

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Machine Design
An open coiled helical compression spring 'A' of mean diameter 50 mm is subjected to an axial load ‘W’. Another spring 'B' of mean diameter 25 mm is similar to spring 'A' in all respects. The deflection of spring 'B' will be __________ as compared to spring 'A'.

One-eighth
Double
One-half
One-fourth

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