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Machine Design

Machine Design
Whether any core is required in wire ropes

Rarely
Yes
Sometimes
No

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Machine Design
Oldham coupling is used to connect two shafts

Which are not in exact alignment
Which have lateral misalignment
Whose axes intersect at a small angle
Which are perfectly aligned

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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 sec²φ
T/sec³φ
T sec³φ

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Machine Design
In order to avoid tearing of the plate at edge, the distance from the center line of the rivet hole to the nearest edge of the plate in terms of dia. of rivet d should be equal to

1.25 d
1.75 d
1.5 d
1 d

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Machine Design
A bolt is designed on the basis of __________ with a large factor of safety.

Direct shear stress
Direct compressive stress
Direct tensile stress
Direct bending stress

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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

0.65
0.55
0.75
0.45

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