A load of 500 kg was lifted through a distance of 13 cm. by an effort of 25 kg which moved through a distance of 650 cm. The efficiency of the lifting machine is

A load of 500 kg was lifted through a distance of 13 cm. by an effort

1.	A load of 500 kg was lifted through a distance of 13 cm. by an effort of 25 kg which moved through a distance of 650 cm. The efficiency of the lifting machine is
A.	0.5
B.	0.4
C.	0.55
D.	30%.
Answer» C. 0.55

Discussion

No Comment Found

Related MCQs

The reaction at the central support of the beam hinged at shown in below figure is
The displacement of a particle which moves along a straight line is given by = 4 + 3 - 10 where is in meters and is in seconds. The time taken by the particle to acquire a velocity of 18 m/sec from rest, is
A particle moves with a velocity of 2 m/sec in a straight line with a negative acceleration of 0.1 m/sec. Time required to traverse a distance of 1.5 m, is
A ball moving with a velocity of 5 m/sec impinges a fixed plane at an angle of 45° and its direction after impact is equally inclined to the line of impact. If the coefficient of restitution is 0.5, the velocity of the ball after impact will be
A pilot flies a small plane in a vertical loop of radius . At the top of its trajectory he experiences weightlessness. If the acceleration due to gravity is , the speed of the plane at the top of its trajectory would be
Total no of instantaneous centres of a machine having links, is
A weight of 100 kg is supported by a string whose ends are attached to pegs and at the same level shown in below figure. The tension in the string is
The resolved part of the resultant of two forces inclined at an angle θ in a given direction is
If a spherical body is symmetrical about its perpendicular axes, the moment of inertia of the body about an axis passing through its centre of gravity as given by Routh's rule is obtained by dividing the product of the mass and the sum of the squares of two semi-axes by where is
A ball of mass 250 g moving on a smooth horizontal table with a velocity of 10 m/sec hits an identical stationary ball on the table. If the impact is perfectly plastic, the velocity of the ball just after impact would be

A load of 500 kg was lifted through a distance of 13 cm. by an effort of 25 kg which moved through a distance of 650 cm. The efficiency of the lifting machine is

Discussion

No Comment Found

Related MCQs

Reply to Comment