If w is the angular velocity of the pulley and T1 and T2 are tensions of driving and driven side then power transmitted equals
A.(T1 + T2) w
B.(T1 – T2) w
C.wT1
D.(T1 + 2T2) w
Category: Applied Mechanics Mcqs
The dimensions of gravitational constant G
A.MLT-1
B.MLT-2
C.ML2T-1
D.M-1L3T-2
The moment of a force is
A.Equivalent to the sum of the moments acting on a body
B.Equivalent to the vertical sum of the moments acting on a body
C.Equivalent to the algebraic sum of the moments acting on a body
D.Equivalent to the sum of horizontal components of the moments on a body
E.Equivalent to the sum of horizontal as well as vertical components of the moments on a body
The mass, in kg, of the earth if its radius is 6400 km, will be
A.6 x 1022
B.6 x 1023
C.6 x 1024
D.6 x 1025
Te dimensions of frequency are
A.T-1
B.L-1
C.L-1T-1
D.MLT
A body is pushed with a force of 10 N for 0.5 second. The impulse given to the body is
A.5 Ns
B.2.5 Ns
C.3.5 Ns
D.50 Ns
A boy sitting in a rail road car throws a ball straight up into the air. The ball will fall back into his hands when the rail road car is
A.moving at constant velocity
B.accelerating forwardA block A is dropped down a smooth inclined plane, while another identical block B is released for free fall from the same height
C.decelerating
D.accelerating forward while going around a curve of radius equal to the maximum height attained by the ball
An electric motor drives a windless which hauls up a crate A of weight W = 500 kg up an inclined plane through a height of 10 m in 2 minutes. The torque acting on the windless is 25 kgm and the drum of the windless makes 30 rpm. The efficiency of the inclined plane would be
A.26.50%
B.41%
C.53.05%
D.61%
E.66%
