Levers and Simple machines MCQ with Answers

Levers and Simple machines MCQ with Answers

1) What is the ratio between the distance moved by the effort to the distance moved by the load?

Answer is:

Velocity ratio

Explanation:

Velocity ratio is the ratio between the distance moved by the effort to the distance moved by the load.

What is the ratio between the distance moved by the effort to the distance moved by the load?

2) What is the mechanical advantage, if a load of 1000 kg is lifted by a simple machine and effort applied is 250 kg?

Answer is:

4

3) What is the velocity ratio of a wheel and axle if the radii of wheel and axle are 375 mm and 75 mm respectively?

Answer is:

5

4) What is the velocity ratio of a simple machine of a mass 120 kg is lifted to a height of 5 metres by a force of 60 kg moving 15 metre. Calculate velocity ratio?

Answer is:

3

5) What is the efficiency of a simple screw jack having velocity ratio is 314.2 and mechanical advantage is 220?

Answer is:

0.7

What is the efficiency of a simple screw jack having velocity ratio is 314.2 and mechanical advantage is 220?