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Engineering Mechanics

Engineering Mechanics
The acceleration of a body sliding down an inclined surface is

g sinθ
None of these
g cosθ
g tanθ

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Engineering Mechanics
The velocity ratio for the third system of pulleys is

n
2n
n²
2n - 1

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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

1.5 cm
2.5 cm
1.0 cm
0.5 cm

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Engineering Mechanics
The force, by which the body is attracted, towards the center of the earth, is called

Weight
Impulsive force
Mass
Momentum

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

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

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Engineering Mechanics
If ‘P’ is the force acting on the body, ‘m’ is the mass of the body and ‘a’ is the acceleration of the body, then according to Newton's second law of motion,

P × m.a = 0
P - m.a = 0
P + m.a = 0
P/m.a = 0

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