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Machine Design

Machine Design
According to Indian standards, total numbers of fundamental deviations are

10
25
20
15

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Machine Design
Which of the following coupling is used to connect two shafts which have both lateral and angular misalignment?

All of these
Bushed pin type coupling
Oldham coupling
Universal coupling

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Machine Design
A closely coiled helical spring is acted upon by an axial force. The maximum shear stress developed in the spring is τ. The half of the length of the spring if cut off and the remaining spring is acted upon by the same axial force. The maximum shear stress in the spring in new condition will be

4 τ
2 τ
τ
τ/2

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Machine Design
When carbon in the cast iron is principally in the form of graphite, the cast iron will be of

Grey colour
White colour
Brown colour
Yellow colour

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Machine Design
The longitudinal stress is __________ of the circumferential stress.

Three-fourth
Double
Two-third
One-half

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Machine Design
Two helical springs of the same material and of equal circular cross-section, length and number of turns, but having radii 80 mm and 40 mm, kept concentrically (smaller radius spring within the larger radius spring), are compressed between two parallel planes with a load W. The inner spring will carry a load equal to

2W/3
8W/9
W/2
W/9

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