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Machine Design

Machine Design
The material commonly used for machine tool bodies is

Aluminium
Mild steel
Cast iron
Brass

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Machine Design
The cam follower extensively used in aircraft engines is

Roller follower
Knife edge follower
Flat faced follower
Spherical faced follower

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Machine Design
According to I.B.R., the efficiency of a double riveted butt joint with double cover straps of equal width should be

80 to 90%
70 to 83%
63 to 70%
45 to 60%

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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.

Four times
Sixteen times
Eight times
Twice

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Machine Design
An open coiled helical compression spring 'A' of mean diameter 50 mm is subjected to an axial load ‘W’. Another spring 'B' of mean diameter 25 mm is similar to spring 'A' in all respects. The deflection of spring 'B' will be __________ as compared to spring 'A'.

One-eighth
One-half
Double
One-fourth

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Machine Design
When a bolt is subjected to an external load, the stress induced in the bolt will be

Combined tensile and shear stress
Any one of these
Shear stress
Tensile stress

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