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Engineering Mechanics

Engineering Mechanics
A differential pulley block has larger and smaller diameters of 100 mm and 80 mm respectively. Its velocity ratio is

10
5
20
40

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Engineering Mechanics
The algebraic sum of moments of the forces forming couple about any point in their plane is

Equal to the moment of the couple
Both of above are wrong
Constant
Both of above are correct

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

Second's pendulum
Torsional pendulum
Simple pendulum
Compound pendulum

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Engineering Mechanics
If two bodies having masses m1 and m2 (m1>m2) have equal kinetic energies, the momentum of body having mass m1 is _________ the momentum of body having mass m2.

None of these
Less than
Greater than
Equal to

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Engineering Mechanics
The unit of angular acceleration is

m/s2
m/s
rad/s2
N-m

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Engineering Mechanics
The C.G. of a solid hemisphere lies on the central radius 3r

At distance — from the plane base 3r
At distance — from the plane base
At distance — from the plane base 3r
At distance — from the plane base 3r

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