Work & Energy MCQs with Answers

Past Paper MCQ

One horse power is equal to?

• A.746 watt
• B.550 watt
• C.1000 watt
• D.500 watt

Past Paper MCQ

What is the working capacity/efficiency of a diesel engine?

• A.70–80%
• B.50–60%
• C.30–40%
• D.90–95%

Work done is negative when ?

• A.Force and displacement are in the same direction
• B.Force and displacement are in opposite directions
• C.Force and displacement are perpendicular to each other
• D.No force is applied

The amount of work required to stop a moving object is equal to ?

• A.The momentum of the object
• B.The potential energy of the object
• C.The kinetic energy of the object
• D.The weight of the object

The ratio of output to input is called?

• A.Efficiency
• B.Power
• C.Work
• D.Force

Which physical quantity is measured in Joules?

• A.Force
• B.Power
• C.Work
• D.Pressure

A moving car has _?

• A.Kinetic energy
• B.Potential energy
• C.Thermal energy
• D.Chemical energy

When the speed of your car is doubled, by what factor does its kinetic energy increase?

• A.2
• B.8
• C.4
• D.16

When force and displacement are in opposite directions, the work done is said to be _?

• A.Positive
• B.Zero
• C.Negative
• D.Infinite

What does the law of conservation of energy state?

• A.Energy can be created but not destroyed
• B.Energy can be destroyed but not created
• C.Energy can be transformed from one form to another
• D.Energy is always lost as heat in every process