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Machine Design

Machine Design
In worm gears, the pressure angle is __________ the angle between two inclined faces in axial plane.

Thrice
Half
Twice
None of these

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Machine Design
The wire ropes make contact at

Sides and bottom of groove of the pulley
Sides of groove of the pulley
Bottom of groove of the pulley
Anywhere in the groove of the pulley

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Machine Design
The strength of the unriveted plate (P) per pitch length is equal to

p.t.σt
(p - d) σt
p.d.σt
(p - d) t.σt

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Machine Design
According to Indian standards, a bolt thread of 6 mm size of coarse pitch and with allowance on the threads and normal tolerance grade is designated as

M8
M8 - 6d
M6
M6 - 8d

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Machine Design
Which of the following coupling is used to connect two shafts which have both lateral and angular misalignment?

All of these
Bushed pin type coupling
Universal coupling
Oldham coupling

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Machine Design
The shock resistance of steel is increased by adding

Chromium
Cobalt and molybdenum
Nickel and chromium
Nickel

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