Refrigeration and Air Conditioning MCQ

Q1. The unit of refrigeration is?

Q2. 1 Ton of refrigeration equals?

Q3. The most commonly used refrigerant in domestic refrigerators is?

Q4. COP of a refrigerator is?

Q5. In refrigeration, the evaporator is used to?

Q6. The compressor in a refrigeration system increases?

Q7. The ideal refrigeration cycle is?

Q8. Which refrigerant is ammonia?

Q9. Which refrigeration component rejects heat?

Q10. Saturated liquid-vapor mixture is found in?

Q11. Which expansion device is used in domestic refrigerators?

Q12. The refrigerant should have?

Q13. The purpose of superheating refrigerant is?

Q14. Which of the following is an eco-friendly refrigerant?

Q15. Which refrigerant is used in large industrial plants?

Q16. The main function of a thermostat is to?

Q17. Humidity is measured using?

Q18. The most efficient refrigeration cycle is?

Q19. In air conditioning, ACH stands for?

Q20. The device used to control refrigerant flow is?

Q21. Psychrometry deals with?

Q22. The comfort air temperature range is?

Q23. Dehumidification means?

Q24. Refrigerants with zero ODP are?

Q25. The purpose of a condenser fan is to?

Q26. Which coefficient indicates cooling performance?

Q27. The dryness fraction at expansion valve outlet is?

Q28. The refrigerant should be?

Q29. Which cycle is used in air refrigeration systems?

Q30. The chemical formula of Ammonia is?

Q31. Sensible heat involves?

Q32. Latent heat involves?

Q33. The pressure of refrigerant in evaporator is?

Q34. In AC systems, the filter’s purpose is to?

Q35. Frost formation occurs on evaporator due to?

Q36. Which refrigerant is safest for the environment?

Q37. The main purpose of insulation in refrigeration is to?

Q38. Which refrigerant is used in vapor absorption systems?