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Machine Design

Machine Design
The helix angle for double helical gears may be made up to

90°
75°
45°
60°

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Machine Design
Allen bolts are

Self locking bolts
Provided with hexagonal depression in head
Used in aircraft application
Designed for shock load

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Machine Design
The notch angle of the Izod impact test specimen is

45°
30°
20°
10°

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Machine Design
The resilience of a bolt may be increased by

Decreasing its length
Increasing its length
Increasing its shank diameter
Decreasing its shank diameter

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Machine Design
A flanged pipe joint will be a leak-proof joint, if the circumferential pitch of the bolts is (where d = Diameter of bolt hole)

Equal to inside diameter of pipe
Less than 20d
Greater than 30d
Between 20d and 30d

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

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

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MORE MCQ ON Machine Design

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