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Machine Design

Machine Design
Crushing resistance required to crush the rivet per pitch length is

p.t.σc
n.d.t.σc
(p - d) t.σc
p.d.σc

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Machine Design
The shock resistance of steel is increased by adding

Nickel and chromium
Nickel
Cobalt and molybdenum
Chromium

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Machine Design
Which of the following key is preferred for the condition when a large amount of impact type torque is to be transmitted in both direction of rotation?

Woodruff key
Tangent key
Feather key
Gib-head key

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Machine Design
The static tooth load should be __________ the dynamic load.

Greater than
Equal to
Less than
None of these

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Machine Design
If T is the actual number of teeth on a helical gear and φ is the helix angle for the teeth, then formative number of teeth is written as

T cosecφ
T/sec³φ
T sec²φ
T sec³φ

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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
Compression
Shear
Combined loads

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