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Engineering Mechanics

Engineering Mechanics
Tension in the cable supporting a lift is more when the lift is moving __________ with an acceleration.

Horizontal
None of these
Upwards
Downwards

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Engineering Mechanics
From a circular plate of diameter 6 cm is cut out a circle whose diameter is a radius of the plate. Find the e.g. of the remainder from the centre of circular plate

1.0 cm
1.5 cm
2.5 cm
0.5 cm

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Engineering Mechanics
In a single threaded worm and worm wheel, the number of teeth on the worm is 50. The diameter of the effort wheel is 100 mm and that of load drum is 50 mm. The velocity ratio is

50
400
200
100

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Engineering Mechanics
A rubber ball is dropped from a height of 2 m. If there is no loss of velocity after rebounding, the ball will rise to a height of

2 m
1 m
4 m
3 m

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Engineering Mechanics
The moment of inertia of a solid sphere of mass ‘m’ and radius ‘r’ is

2mr²/3
mr²
mr²/2
2mr²/5

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Engineering Mechanics
The maximum mechanical advantage of a lifting machine is

1 / m
1 + m
m
1 - m

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