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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
In simple harmonic motion, acceleration of a particle is proportional to

Rate of change of velocity
Displacement
Direction
Velocity

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Applied Mechanics and Graphic Statics
For lifting a load of 50 kg through a distance of 2.5 cm, an effort of 12.5 kg is moved through a distance of 40 cm. The efficiency of the lifting machine, is

0.65
0.6
0.75
0.7

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Applied Mechanics and Graphic Statics
When two forces, each equal to P, act at 90° to each other, then the resultant will be

2P
P√2
P
P/√2

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Applied Mechanics and Graphic Statics
The piston of a steam engine moves with a simple harmonic motion. The crank rotates 120 r.p.m. and the stroke length is 2 meters. The linear velocity of the piston when it is at a distance of 0.5 metre from the centre, is

8.88 m/sec
5.88 m/sec
12.88 m/sec
10.88 m/sec

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Applied Mechanics and Graphic Statics
The condition of equilibrium for any system of forces in a plane is

That polygon of forces must close
That resultant couple must be zero
Both (A) and (B)
None of these

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Applied Mechanics and Graphic Statics
A particle is executing simple harmonic motion in a line 1.0 m long. If the time of one complete vibration is 1 sec, then the maximum velocity of the particle is

6.28 m/sec
3.14 m/sec
1.00 m/sec
1.57 m/sec

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