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Machine Design

Machine Design
Screws used for power transmission should have

High efficiency
Very fine threads
Low efficiency
Strong teeth

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

None of these
Greater than
Equal to
Less than

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Machine Design
The endurance limit in shear of carbon steel can be obtained by multiplying the endurance limit in flexure by a factor of

0.55
0.45
0.65
0.75

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Machine Design
In helical gears, the distance between similar faces of adjacent teeth along a helix on the pitch cylinders normal to the teeth, is called

Diametral pitch
Module
Axial pitch
Normal pitch

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Machine Design
The longitudinal joint in boilers is used to get the required

Length of boiler
Diameter of boiler
Efficiency of boiler
Length and diameter of boiler

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Machine Design
When two non-parallel or intersecting but coplanar shafts are connected by gears, the arrangement is known as,

Helical gearing
None of these
Bevel gearing
Worm gearing

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