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Machine Design

Machine Design
The efficiency of a riveted joint is equal to

Ps /P
Pt /P
Pc /P
Least of Pt, Ps and Pc/P

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Machine Design
The temperature at which the new grains are formed in the metal is known as

Lower critical temperature
Upper critical temperature
None of these
Recrystallization temperature

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Machine Design
In V-belt drive, belt touches

At sides only
Could touch anywhere
At bottom
Both at bottom and sides

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Machine Design
Which of the following formula is used in designing a connecting rod?

Johnson's parabolic formula
Johnson's straight line formula
Euler's formula
Rankine's formula

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Machine Design
When bevel gears having equal teeth and equal pitch angles connect two shafts whose axes intersect at right angle, then they are known as

Crown bevel gears
Miter gears
Angular bevel gears
Internal bevel gears

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Machine Design
In order to avoid tearing of the plate at an edge, the distance from the centre line of the rivet hole to the nearest edge of the plate should be equal to (where d = Diameter of rivet hole)

1 d
2.5 d
1.5 d
2 d

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