MCQOPTIONS
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MCQOPTIONS
This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Refrigeration knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Effect of high side pressure or discharge pressure or condenser pressure is to reduce the COP of the cycle. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
Which one of the following is not effect of change in suction pressure? |
| A. | reduces the net refrigeration effect |
| B. | reduces the mass flow rate of refrigerant per ton of refrigeration |
| C. | reduces the COP |
| D. | increases the compressor power per ton of refrigeration |
| Answer» C. reduces the COP | |
| 3. |
Which one of the following is not effect of liquid sub cooling? |
| A. | increase the refrigeration effect |
| B. | reduce the piston displacement |
| C. | increase the COP |
| D. | increase the compressor power per ton of refrigeration |
| Answer» E. | |
| 4. |
In which case will the refrigeration effect will not increase and the COP of cycle with superheated vapour in suction phase will be less than the COP of ideal cycle? |
| A. | Superheating the vapour from state 1 to 1 |
| B. | Superheating the vapour from state 1 to 2 |
| C. | Superheating the vapour from state 1 to 2 |
| D. | COP always increases when superheating vapour in suction vapour |
| Answer» B. Superheating the vapour from state 1 to 2 | |
| 5. |
The COP of the cycle may increase or decrease or remain unchanged depending upon the range of pressure and the degree of superheating. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 6. |
Which of these is not an effect of superheat in suction vapour? |
| A. | increase in refrigeration effect |
| B. | increase in compression work |
| C. | decrease the capacity of compressor per ton of refrigeration |
| D. | condenser size decreases |
| Answer» E. | |