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Machine Design

Machine Design
Aircraft body is usually fabricated by

Casting
Pre-casting
Welding
Riveting

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Machine Design
Stress concentration in static loading is more serious in

Ductile materials
Brittle materials
Depends on other factors
Equally serious in both cases

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Machine Design
A hollow shaft will transmit a __________ torque than a solid shaft of the same mass and same material.

Smaller
None of these
Greater
Medium

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Machine Design
A transmission shaft includes

Over head shaft
Line shaft
Counter shaft
All of these

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Machine Design
When the belt is transmitting maximum power, the belt speed should be (Where, m = mass of belt per meter (kg/m) and Pmax = maximum permissible tension in belt (N))

√(3m /Pmax)
√(Pmax / m)
√(Pmax / 2m)
√(Pmax / 3m)

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Machine Design
In order to permit the thermal expansion/contraction of tubing, it should be

Bent
Honed
Flared
Crimped

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