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Machine Design

Machine Design
The shear modulus of resilience is proportional to

Shear stress
(Shear stress)²
(Shear stress)⁴
(Shear stress)3

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Machine Design
The helix angle for single helical gears ranges from

15° to 20°
10° to 15°
20° to 35°
35° to 50°

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Machine Design
Belt slip may occur due to

All of these
Heavy load
Loose belt
Driving pulley too small

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Machine Design
In order to avoid tearing of the plate at edge, the distance from the center line of the rivet hole to the nearest edge of the plate in terms of dia. of rivet d should be equal to

1.25 d
1.5 d
1.75 d
1 d

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Machine Design
When bevel gears connect two shafts whose axes intersect at an angle greater than a right angle and one of the bevel gears has a pitch angle of 90°, then they are known as

Internal bevel gears
Crown bevel gears
Mitre gears
Angular bevel gears

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Machine Design
For circumferential joint in boilers, the type of joint used is

Lap joint with one ring overlapping the other
Butt joint with single cover plate
Butt joint with double cover plate
Any one of the above

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