MCQOPTIONS
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MCQOPTIONS
This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Refrigeration knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is the power required to run the following arrangement? If the values of enthalpy at point 1, 2 and 3 are 193, 258 and 56 kJ/kg and masses are m1 = 11 kg/min, m2 = 21 kg/min and m3 = 28 kg/min. |
| A. | 65 kJ/min |
| B. | 65 kW |
| C. | 3900 kW |
| D. | 4000 kJ/minView Answer |
| Answer» C. 3900 kW | |
| 2. |
What is the value of Refrigeration effect in the following arrangement? If the values of enthalpy at point 1, 2 and 3 are 170, 240 and 107 kJ/kg and masses are m1 = 13 kg/min, m2 = 15 kg/min and m3 = 19 kg/min |
| A. | 3000 kJ/min |
| B. | 2961 kW |
| C. | 2861 kW |
| D. | 2961 kJ/minView Answer |
| Answer» E. | |
| 3. |
What is the value of mass flowing through the compressor in the following arrangement? If the values of enthalpy at point 1, 2 and 3 are 184, 210 and 84 kJ/kg and refrigeration capacities are 10, 15 and 20 TR respectively. |
| A. | 94.5 kg/min |
| B. | 32.6 kg/min |
| C. | 49.5 kg/s |
| D. | 94.5 kg/sView Answer |
| Answer» B. 32.6 kg/min | |
| 4. |
What is the value of C.O.P. in the following arrangement? If the values of enthalpy at point 1, 2 and 3 are 184, 210 and 75 kJ/kg and masses are m1 = 13 kg/min, m2 = 15 kg/min and m3 = 28.085 kg/min |
| A. | 6.23 |
| B. | 1.88 |
| C. | 4.19 |
| D. | 0.2386View Answer |
| Answer» D. 0.2386View Answer | |
| 5. |
What is the value of C.O.P. in the following arrangement? |
| A. | (h1 – h4) / (h2 – h1) |
| B. | (h1 – h4) / (h4 – h1) |
| C. | (h1 – h2) / (h4 – h1) |
| D. | (h2 – h3) / (h2 – h1) |
| Answer» B. (h1 – h4) / (h4 – h1) | |
| 6. |
What is the value of the refrigeration effect in the following arrangement? |
| A. | m1 – m2 – m3 (h2 – h1) |
| B. | m1 + m2 + m3 (h4 – h1) |
| C. | m1 + m2 + m3 (h1 – h4) |
| D. | m1 + m2 – m3 (h4 – h1) |
| Answer» D. m1 + m2 – m3 (h4 – h1) | |
| 7. |
What is the value of work done in the following arrangement? |
| A. | m1 – m2 – m3 (h2 – h1) |
| B. | m1 + m2 + m3 (h2 – h1) |
| C. | m1 + m2 – m3 (h2 – h1) |
| D. | m1 + m2 + m3 (h4 – h1) |
| Answer» C. m1 + m2 – m3 (h2 – h1) | |
| 8. |
What is the total mass of refrigerant flowing through the compressor if the masses flowing through each evaporator are m1, m2, and m3? |
| A. | m1 – m2 – m3 |
| B. | m1 + m2 – m3 |
| C. | m1 – m2 + m3 |
| D. | m1 + m2 + m3 |
| Answer» E. | |
| 9. |
What does process 4-1 represent? |
| A. | Evaporation |
| B. | Compression |
| C. | Condensation |
| D. | Expansion |
| Answer» B. Compression | |
| 10. |
What do PC and PE represent? |
| A. | Evaporator and expansion pressure |
| B. | Compression and expansion pressure |
| C. | Condenser and evaporator pressure |
| D. | Intercooling pressure |
| Answer» D. Intercooling pressure | |
| 11. |
Which of the following system is used for maintaining at the same temperatures when food products kept in different compartments? |
| A. | Evaporator at the same temperature with a single compressor |
| B. | Evaporator at the same temperature with multiple compressors |
| C. | Evaporator at different temperature with a single compressor |
| D. | Evaporator at different temperature with multiple compressors |
| Answer» B. Evaporator at the same temperature with multiple compressors | |
| 12. |
Vegetables, Fruits, Frozen products can be maintained at the same temperatures and humidity. |
| A. | False |
| B. | True |
| Answer» B. True | |
| 13. |
Multiple evaporator system is used to maintain different temperatures at different points. |
| A. | False |
| B. | True |
| Answer» C. | |