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Engineering Mechanics

Engineering Mechanics
A pendulum which executes one beat per second is known as

Simple pendulum
Compound pendulum
Torsional pendulum
Second's pendulum

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Engineering Mechanics
A machine having an efficiency less than 50%, is known as

Reversible machine
Ideal machine
Neither reversible nor non-reversible machine
Non-reversible machine

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Engineering Mechanics
The center of gravity of a semi-circle lies at a distance of __________ from its base measured along the vertical radius.

3r/4π
3r/ 8
4r/ 3π
8r/3

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Engineering Mechanics
The linear velocity of a body rotating at ω rad/s along a circular path of radius r is given by

ω.r
ω².r
ω²/r
ω/r

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Engineering Mechanics
The velocity ratio of a differential pulley block with D and d as the diameters of larger and smaller pulley, is

D/(D + d)
2D/(D + d)
2D/(D - d)
D/(D - d)

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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
200
400
100

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MORE MCQ ON Engineering Mechanics

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