| 1 |
Pascal is the unit of |
- A. Pressure
- B. Force
- C. Tension
- D. Weight
|
| 2 |
Unite of thermodynamics scale of temperature is. |
- A. Centigrade
- B. Fahrenheit
- C. Kelvin
- D. Celsius
|
| 3 |
The measure of hotness or coldness of a substance is. |
- A. Temperature
- B. Heat
- C. Internal energy
- D. Energy
|
| 4 |
No spark plug is needed in the |
- A. Petrol engine
- B. Diesel engine
- C. Gas engine
- D. Water engine
|
| 5 |
the work done in isochoric process is. |
- A. Constant
- B. Variable
- C. Zero
- D. Depend upon condition
|
| 6 |
the change in internal energy is defined as |
- A. Q - W
- B. Q-T
- C. Q + P
- D. Q - P
|
| 7 |
Not change in entropy of a system after one complete Carnot cycle is. |
- A. Positive
- B. Negative
- C. Zero
- D. None of these
|
| 8 |
A Carnot engine has an efficiency of 50% when its sink temperature is at 27 <sup>o</sup>C. The temperature of source. |
- A. 273<sup> o</sup>C
- B. 300 <sup>o</sup>C
- C. 327 <sup>o</sup>C
- D. 373 <sup>o</sup>C
|
| 9 |
Entropy of measure of. |
- A. Internal energy of system
- B. Order of system
- C. Disorder of system
- D. Potential energy of system
|
| 10 |
If heat engine absorb 400 J and rejects 200 J heat energy, its efficiency will be. |
- A. 25%
- B. 50%
- C. 70%
- D. 100%
|
