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51
For a simple pendulum, time period for a beat, is
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Answer: Option A
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52
Free body diagram is an
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Answer: Option C
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53
Maximum efficiency of a screw jack for the angle of friction $$\theta $$, is
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Answer: Option D
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54
For perfectly elastic bodies, the value of coefficient of restitution is
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Answer: Option C
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55
In a lifting machine with efficiency 60%, an effort of 200 N is required to raise a load of 6 kN. The velocity ratio of the machine is
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Answer: Option B
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56
If a projectile is fired with an initial velocity of 10 m/sec at an angle of 60° to the horizontal, its horizontal and vertical velocity at the highest point of trajectory are
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Answer: Option B
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57
The angle of projection for a range is equal to the distance through which the particle would have fallen in order to acquire a velocity equal to the velocity of projection, will be
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Answer: Option D
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58
An ordinate in a funicular polygon represents
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Answer: Option C
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59
The Centre of gravity of a 10 × 15 × 5 cm T section from its bottom, is
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Answer: Option C
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60
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
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Answer: Option C
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