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Machine Design

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

Ductile
Plastic
Elastic
Brittle

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Machine Design
Rankine's theory is used for

Plastic materials
Ductile materials
Brittle materials
Elastic materials

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Machine Design
When a bolt is subjected to shock loading, the resilience of the bolt should be considered in order to prevent breakage at the

Middle
Shank
Head
Thread

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Machine Design
A type of brake commonly used in motor cars is a

Internal expanding brake
Band and block brake
Band brake
Shoe brake

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Machine Design
The load cup of a screw jack is made separate from the head of the spindle to

Reduce the effort needed for lifting the working load
Reduce the value of frictional torque
Prevent the rotation of load being lifted
Enhance the load carrying capacity of the jack

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Machine Design
In a flat belt drive, if the slip between the driver and belt is 1 %, between the belt and follower is 3% and driver and follower pulley diameters are equal, then velocity ratio of the drive will be

0.97
0.96
0.99
0.98

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