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Machine Design

Machine Design
The expansion joint is mostly used for pipes which carry steam at __________ pressures.

High
None of these
Low
Medium

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Machine Design
The bending stress in a curved beam is

None of these
Maximum at the neutral axis
Zero at the centroidal axis
Zero at the point other than centroidal axis

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Machine Design
If the centre distance of the mating gears having involute teeth is increased, then the pressure angle

Remains unchanged
None of these
Increases
Decreases

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Machine Design
If an application calls for stresses on screw threads in one direction only, then the following type of thread would be best suited

Acme
Square
Buttress
BSW

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Machine Design
When a shaft is subjected to combined twisting moment (T) and bending moment (M), then the equivalent twisting moment is equal to

(1/2) × √(M² + T²)
√(M² + T²)
M + √(M² + T²)
(1/2) × [M + √(M² + T²)]

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Machine Design
The wear load should be __________ the dynamic load.

Equal to
Less than
Greater than
None of these

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