Syvum Home Page
  Teasers   IQ Tests   GMAT   GRE   GK   C++   Chemistry   Biology   Recipes   Search

Home > Quiz Games > Physics >

School Physics Quiz : Work & Energy


Answer the following questions based on work & energy.

Formats Info Page Quiz Review
Multiple choice

Your Performance  

1.

A mass of 11 kg is raised through a vertical distance of 30 m. If the gravitational acceleration is 9.8 m s-2, then the potential energy gained by the mass is

  330 J

  3234 J

  294 J

  108 J

  Half-n-half Clue
 

2.

If an engine does 679 J of work in 7 seconds, its average power is

  686 W

  97 W

  672 W

  4753 W

  Half-n-half Clue
 

3.

Efficiency of a machine equals

  Work Input / (Work Input + Work Output) × 100 %

  Work Output / Work Input × 100 %

  Work Output / (Work Input + Work Output) × 100 %

  Work Input / Work Output × 100 %

  Half-n-half Clue
 

4.

The SI unit of power is

  Volt

  Watt

  Joule

  Half-n-half Clue
 

5.

If there is no friction, the efficiency of a machine can be greater than 100 %.

  True

  False

 

6.

The maximum amount of work that can be done by a 20 kW machine in 12 seconds is

  2 J

  240 J

  2 kJ

  240 kJ

  Half-n-half Clue
 

7.

A body loses 2744 J of potential energy in falling through 40 m. If the gravitational acceleration is 9.8 m s-2, then the body has a mass of

  392 kg

  280 kg

  7 kg

  69 kg

  Half-n-half Clue
 

After clicking "Score and Show Answer(s)", click the "More Questions" button at the bottom to get a new set of questions.


Create Your Own Quizzes


Contact Info © 1999-2014 Syvum Technologies Inc. Privacy Policy Disclaimer and Copyright