MCQOPTIONS
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MCQOPTIONS
This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your Refrigeration knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following is not true about single-stage compression? |
| A. | Size of the cylinder is very large |
| B. | Difficult to reject a good amount of heat in a lesser time of compression |
| C. | Volumetric efficiency will be low |
| D. | Safe at a higher temperature |
| Answer» E. | |
| 2. |
What is the value of optimum intermediate pressure is the cooling ratio is fixed in a compound VCR with intercooling having suction and discharge pressure as 2 and 8 bar respectively? |
| A. | 2 bar |
| B. | 4 bar |
| C. | 6 bar |
| D. | 8 bar |
| Answer» C. 6 bar | |
| 3. |
Multistage compression provides effective lubrication. |
| A. | False |
| B. | True |
| Answer» C. | |
| 4. |
What is the expression for optimum intercooler or intermediate pressure P2 if the cooling ratio is fixed in a compound compression refrigeration system with intercooling? |
| A. | P<sub>2</sub> = P<sub>1</sub> / P<sub>3</sub> |
| B. | P<sub>2</sub> = P<sub>3</sub> / P<sub>1</sub> |
| C. | P<sub>2</sub> = P<sub>1</sub> x P<sub>3</sub> |
| D. | P<sub>2</sub> = P<sub>1</sub> x P<sub>3</sub> |
| Answer» D. P<sub>2</sub> = P<sub>1</sub> x P<sub>3</sub> | |
| 5. |
Why is multi-stage compression used? |
| A. | To improve C.O.P. |
| B. | To decrease the refrigeration effect |
| C. | To increase work |
| D. | To increase leakage loss |
| Answer» B. To decrease the refrigeration effect | |