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Machine Design

Machine Design
Two shafts of the same length and material are joined in series. If the ratio of their diameters is 2, then the ratio of their angles of twist will be

8
16
4
2

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Machine Design
For circumferential joint in boilers, the type of joint used is

Butt joint with double cover plate
Any one of the above
Lap joint with one ring overlapping the other
Butt joint with single cover plate

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Machine Design
The smallest diameter of an external or internal screw thread is known as

Pitch diameter
None of these
Minor diameter
Major diameter

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Machine Design
The taper on a rectangular sunk key is

1 in 32
1 in 48
1 in 16
1 in 100

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Machine Design
The allowable static stress for steel gears is approximately __________ of the ultimate tensile stress.

Double
One-half
One-third
One-fourth

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Machine Design
An Involute pinion and gear are in mesh. If both have the same size of addendum, then there will be interference between the

Tip of the gear and flank of pinion
Tip of both gear and pinion
Tip of the pinion and flank of gear
Flanks of both gear and pinion

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