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Machine Design

Machine Design
Guest's theory of failure is applicable for following type of materials

Elastic
Plastic
Ductile
Brittle

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

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

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Machine Design
A circular shaft can transmit a torque of 5 kN-m. If the torque is reduced to 4 kN-m, then the maximum value of bending moment that can be applied to the shaft is

3 kN-m
4 kN-m
1 kN-m
2 kN-m

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Machine Design
According to I.B.R., the efficiency of a double riveted butt joint with double cover straps of equal width should be

70 to 83%
63 to 70%
80 to 90%
45 to 60%

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Machine Design
The helix angle for single helical gears ranges from

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

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Machine Design
A saddle key __________ power through frictional resistance only.

None of these
Does not transmit
Either A or B
Transmits

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