| 1 |
The actual efficiency of property turned petrol engine is. |
- A. 20% to 30%
- B. 30% to 35%
- C. 40% to 45%
- D. 25% to 30%
|
| 2 |
The motion of gas molecules is |
- A. In the same direction
- B. Random
- C. Walls of container
- D. Opposite to each other
|
| 3 |
An ideal reversible heat engine has |
- A. 100% efficiency
- B. Highest efficiency
- C. 80%
- D. 90%
|
| 4 |
Pressure 'P' of a gas is defined as |
- A. F/A
- B. FA
- C. F/V
- D. F/D
|
| 5 |
No of spark plugs needed in the diesel engine are. |
|
| 6 |
The efficiency of a Carnot Heat Engine is 100% if temperature of sink T2 is. |
- A. 0 <sup>o</sup>C
- B. 0 K
- C. 0 <sup>o</sup>F
- D. 100 K
|
| 7 |
According to first law of thermodynamics the quantity which is conserved. |
- A. Force
- B. Momentum
- C. Energy
- D. Power
|
| 8 |
Which of following is irreversible process |
- A. Slow compression of an elastic spring
- B. Slow evaporation of substances in isolated vessel
- C. Slow expansion of a gas
- D. A chemical explosion
- E. <br>
|
| 9 |
If the temperature of sink is absolute zero then the efficiency of heat engine engine should be. |
- A. 100%
- B. 50%
- C. Infinite
- D. zero
|
| 10 |
For working of heat engine, there must be |
- A. A source
- B. A sink
- C. Ether of these
- D. Both of them
|