MCQOPTIONS
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MCQOPTIONS
This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Ic Engine knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A carnot cycle refrigerator operates between 250 K and 300 K. What is the value of COP? |
| A. | 10 |
| B. | 20 |
| C. | 25 |
| D. | 5 |
| Answer» E. | |
| 2. |
A cyclic heat engine does 50kJ of work per cycle. If efficiency of engine is 75%, the heat rejected per cycle will be ___________ |
| A. | 60.6kJ |
| B. | 16.6kJ |
| C. | 66.6kJ |
| D. | 200kJ |
| Answer» C. 66.6kJ | |
| 3. |
A carnot cycle is to be designed to attain efficiency of 0.75. if temperature of high temperature reservoir is 727 C, then low temperature reservoir will have to be maintained at ___________ |
| A. | 23 C |
| B. | 181 C |
| C. | -23 C |
| D. | -181 C |
| Answer» D. -181 C | |
| 4. |
A carnot heat pump is used to heat a house. The outside temperature is -3 C and the indoor temperature is 27 C. If the heat loss from the house is 40kW, the power required to operate the heat pump is? |
| A. | 1kW |
| B. | 2kW |
| C. | 3kW |
| D. | 4kW |
| Answer» E. | |
| 5. |
For a given temperature T1, as the difference between T1 and T2 increases, the COP of a carnot heat pump ___________ |
| A. | increases |
| B. | decreases |
| C. | first increases, then decreases |
| D. | none of the mentioned |
| Answer» C. first increases, then decreases | |
| 6. |
In a carnot cycle, what is the working fluid? |
| A. | a real gas |
| B. | an ideal gas |
| C. | a natural gas |
| D. | none of the mentioned |
| Answer» C. a natural gas | |