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Machine Design

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

None of these
Smaller
Greater
Medium

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Machine Design
If d is the normal diameter of a bolt in mm, then the initial tension in kg in a bolt used for making a fluid tight joint as for steam engine cover joint is calculated by the relation

138 d
151 d
124 d
168 d

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Machine Design
A self locking screw has

Coefficient of friction is greater than tangent of load angle
Fine threads
Course threads
Hole for inserting split pin

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Machine Design
A taper key which fits half in the key way of the hub and half in the key way of shaft, is known as

Internal bevel gears
Mitre gears
Angular bevel gears
Crown Bevel gears

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Machine Design
Cast iron pipes are mainly used

In pressure lubrication systems on prime movers
For conveying steam
In water and sewage systems
All of these

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Machine Design
The material used for brake lining should have __________ coefficient of friction.

Moderate
None of these
Low
High

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