MCQOPTIONS
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MCQOPTIONS
This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your GATE practice papers - Mechanical knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A cyclic heat engine operates between source temperature of 1000 C and a sink temperature 50 C. Calculate least rate of heat rejection when net work output is 2 kW. (Marks: 02) |
| A. | 2.6799 kW |
| B. | 0.6799 kW |
| C. | 0.7463 kW |
| D. | none of the above |
| Answer» C. 0.7463 kW | |
| 2. |
Which condition of Rankine cycle has highest efficiency when operating between same pressure limits? (Marks: 02) |
| A. | Superheated cycle |
| B. | Regenerative cycle |
| C. | Reheat cycle |
| D. | Saturated cycle |
| Answer» C. Reheat cycle | |
| 3. |
Which among the following has an infinite heat capacity?(Marks: 01) |
| A. | heat engine |
| B. | thermal energy reservoir |
| C. | both a. and b |
| D. | none of the above |
| Answer» C. both a. and b | |
| 4. |
What is a quasi-static process? (Marks: 02) |
| A. | a process which is random |
| B. | a process which is spontaneous |
| C. | a process which is infinitely slow |
| D. | a process which is stationary |
| Answer» D. a process which is stationary | |
| 5. |
What is the Perpetual Motion Machine of First Kind (PMM1)? (Marks: 02) |
| A. | a machine which produces mechanical work with consumption of some energy |
| B. | a machine which produces mechanical work without consumption of some energy |
| C. | a machine which generates heat energy with consumption of some external work |
| D. | none of the above |
| Answer» C. a machine which generates heat energy with consumption of some external work | |
| 6. |
Which is the example of path function?(Marks: 01) |
| A. | Heat energy |
| B. | Work energy |
| C. | both a. and b. |
| D. | none of the aboves |
| Answer» D. none of the aboves | |
| 7. |
In which condition does the internal energy of the system increase? (Marks: 02) |
| A. | when the heat transfer into the system is less than the work transfer out of the system |
| B. | when the heat transfer into the system is more than the work transfer out of the system |
| C. | when the heat transfer into the system is equal to the work transfer out of the system |
| D. | none of the above |
| Answer» C. when the heat transfer into the system is equal to the work transfer out of the system | |