| 1 |
The rate of doing work is called : |
- A. Power
- B. Work
- C. Efficiency
- D. None of above
|
| 2 |
1 MJ= |
- A. 10<sup>3</sup> J
- B. 10<sup>6</sup>J
- C. 10<sup>7</sup>J
- D. 10<sup>-3</sup>J
|
| 3 |
The energy stored in a dam is: |
- A. Electric energy
- B. Potential energy
- C. Kinetic energy
- D. Thermal energy
|
| 4 |
Which one of the following converts light energy into electrical energy? |
- A. Electric bulb
- B. Electric generator
- C. Photo cell
- D. Electric cell
|
| 5 |
P.E is calculated by a formula : |
- A. Mgh
- B. mg
- C. gh
- D. Nil
|
| 6 |
In Einstein's mass-energy equation ,c is the |
- A. Speed of sound
- B. Speed of light
- C. Speed of electron
- D. Speed of Earth
|
| 7 |
Formula of Power: |
- A. P = wt
- B. P = w/t
- C. P = t/w
- D. P = w/t<sup>2</sup>
|
| 8 |
The S.I unit of work is : |
|
| 9 |
If W stands for work, F stands for force and S stand for displacement, than mathematical work is defined as |
- A. W = P x S
- B. W = F x v
- C. W = F x r
- D. W = F x S
|
| 10 |
The ratio of output to input is called: |
- A. work
- B. Efficiency
- C. Force
- D. All of above
|
