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Applied Mechanics and Graphic Statics

Applied Mechanics and Graphic Statics
For a self-locking machine, the efficiency should be

0.5
None of these
More than 50%
Less than 60%

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Applied Mechanics and Graphic Statics
Which of the following is a scalar quantity?

Torque
Energy
Momentum
Impulse

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Applied Mechanics and Graphic Statics
The angles between two forces to make their resultant a minimum and a maximum respectively are

90° and 180°
0° and 90°
180° and 0°
180° and 90°

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Applied Mechanics and Graphic Statics
The direction of projection should bisect the angle between the inclined plane and the vertical for a range of a projectile on inclined plane

To be maximum
To be zero
None of these
To be minimum

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Applied Mechanics and Graphic Statics
A glass ball is shot to hit a wall from a point on a smooth floor. If the ball returns back to the point of projection in twice the time taken in reaching the wall, the coefficient of restitution between the glass ball and the wall is

0.33
0.25
0.5
0.4

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Applied Mechanics and Graphic Statics
If the angle of projection is double the angle of inclination (α) of the plane on which particle is projected, the ratio of times of flight up the inclined plane and down the inclined plane, will be

½ tan α
½ sin α
2 cos α
½ cos α

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