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Machine Design

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

High
Medium
Low
None of these

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Machine Design
The property of a material which enables it to resist fracture due to high impact loads is known as

Endurance
Strength
Toughness
Elasticity

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Machine Design
Which of the following screw thread is used for power transmission in one direction only?

Acme threads
Square threads
Buttress threads
Multiple threads

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Machine Design
The endurance or fatigue limit is defined as the maximum value of the stress which a polished standard specimen can withstand without failure, for infinite number of cycles, when subjected to

Dynamic load
Static load
Static as well as dynamic load
Completely reversed load

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Machine Design
The rated life of a bearing varies

Directly as load
Inversely as fourth power of load
Inversely as cube of load
Inversely as square of load

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Machine Design
In levers, leverage is the ratio of

Effort arm to the load arm
Load arm to the effort arm
Load lifted to the effort applied
Mechanical advantage to the velocity ratio

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