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Machine Design

Machine Design
According to Indian standards, total numbers of tolerance grades are

18
8
20
12

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Machine Design
A key made from a cylindrical disc having segmental cross-section, is known as

Gib head key
Flat saddle key
Feather key
Woodruff key

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Machine Design
A chain drive transmits __________ power as compared to belt drive.

More
Same
Less
None of these

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Machine Design
If T is the actual number of teeth on a helical gear and φ is the helix angle for the teeth, then formative number of teeth is written as

T/sec³φ
T cosecφ
T sec³φ
T sec²φ

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Machine Design
The ratio of circumferential stress to longitudinal stress in a thin cylinder subjected to an internal pressure is

4
1
2
43832

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Machine Design
The helix angle for single helical gears ranges from

10° to 15°
35° to 50°
15° to 20°
20° to 35°

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