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Machine Design

Machine Design
Which one of the following is a positive drive?

V-belt drive
Rope drive
Crossed flat belt drive
Chain drive

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Machine Design
In Vickers hardness testing, the pyramid indentor apex is

136°
122°
40°
152°

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Machine Design
The power transmitted by the belt drive can be increased by

Increasing wrap angle by using idler pulley
Dressing the belt to increase the coefficient of friction
All of these
Increasing the initial tension in the belt

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Machine Design
The rivet head used for boiler plate riveting is usually

Snap head
Conical head
Pan Head
Counter sunk head

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Machine Design
When a nut is tightened by placing a washer below it, the bolt will be subjected to following type of loads

Tension
Combined loads
Compression
Shear

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Machine Design
Fabric belts are used in industrial applications because

They are cheap
They can work at high temperature
None of these
They are unaffected by moisture and humidity

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