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_____.

40%

50%

55%

65%

Correct Answer : 40%

Recently Updated in Applied Mechanics Questions

A geo-stationary satellite is one which orbits the earth with a velocity of rotation of____.

earth

sun

moon

None of the Above

Correct Answer : Option (A) : earth

If two equal forces of magnitude P act at an angle θ, their resultant, will be____.

P sin θ/2

P cos θ/2

2P sin θ/2

2P cos θ/2

Correct Answer : Option (D) : 2P cos θ/2

Two parallel forces 20 kg and 15 kg act. In order that the distance of the resultant from 20 kg force may be the same as that of the former resultant was from 15 kg, the 20 kg force is diminished by___.

4.5 kg

5.5 kg

6.25 kg

8.75 kg

Correct Answer : Option (D) : 8.75 kg

Civil Engineering MCQ's

Building Materials

Building Construction

Strength of Materials

Hydraulics

RCC Structures Design

Steel Structure Design