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Engineering Mechanics

Engineering Mechanics
Which of the following are vector quantities?

Linear displacement
All of these
Linear acceleration
Linear velocity

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Engineering Mechanics
A weight of 1000 N can be lifted by an effort of 80 N. If the velocity ratio is 20, the machine is

Reversible
Ideal
None of these
Non-reversible

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Engineering Mechanics
The periodic time of one oscillation for a simple pendulum is (where l = Length of the pendulum.)

None of these
(1/2π). √(l/g)
(1/2π). √(g/l)
2π. √(l/g)

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Engineering Mechanics
The range of projectile will be maximum for a given velocity of projectile, when the angle of projection (α) is

45° + β/2
60° + β/2
β/2
30° + β/2

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

mr²
mr²/2
2mr²/3
2mr²/5

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Engineering Mechanics
A redundant frame is also called __________ frame.

Deficient
Imperfect
None of these
Perfect

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