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Machine Design

Machine Design
The cross-section of the arm of a bell crank lever is

Rectangular
I-section
Elliptical
Any one of these

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Machine Design
The constant factor in case of R10 series of preferred numbers is

1.12
1.26
1.06
1.58

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Machine Design
In order to have smooth operation, the minimum number of teeth on the smaller sprocket, for moderate speeds, should be

17
15
25
21

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Machine Design
Two shafts A and B are made of the same material. The diameter of shaft A is twice as that of shaft B. The power transmitted by the shaft A will be __________ of shaft B.

Sixteen times
Eight times
Four times
Twice

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Machine Design
Which of the following is an anti-friction bearing?

Journal bearing
Pedestal bearing
Collar bearing
Needle bearing

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Machine Design
The ratio of endurance limit in shear to the endurance limit in flexure is

0.33
0.4
0.55
0.5

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