Refrigeration and air conditioning quiz
•Download as PPTX, PDF•
0 likes•79 views
JNTU Ananthapur Basic civil and mechanical engineering sixth unit multiple choice questions and answers
Recommended
More Related Content
What's hot
What's hot (20)
Similar to Refrigeration and air conditioning quiz
Similar to Refrigeration and air conditioning quiz (20)
More from MOKSHIT TECH
More from MOKSHIT TECH (20)
Recently uploaded
Recently uploaded (20)
Refrigeration and air conditioning quiz
- 1. • 1.Refrigeration defined as the process of providing and maintaining a temperature well below that of surrounding atmosphere. • A.True • B.False
- 2. 2.…………..is defined as the quantity of heat extracted from a cold body or space to be cooled in a given time. A. Refrigerating Effect B. One ton of refrigeration C. Refrigeration D.none
- 3. 3.One ton of refrigeration is defined as, “the quantity of heat abstracted (refrigerating effect) to freeze one ton of water into one ton of ice in a duration of 24 hours at 0o c”. • A.False • B.True
- 4. 4.………….defined as the ratio of heat extracted in a given time (refrigerating effect) to the work input. • A. One ton of refrigeration • B. Refrigeration • C. Co efficient of Performance • D.none
- 5. 5.Refrigerant Any substance that absorbs heat through expansion and vaporization process and loses heat due to condensation is a refrigeration process is called refrigerant. • A.False • B.True
- 6. 6.Identify examples of refrigerants A. Air, Freon – 12 B. Ammonia (NH3 C. Carbon dioxide (CO2) D. Sulphur dioxide (SO2) E.All
- 7. 7.Primary Refrigerants A. Ammonia (NH3), B. Carbon dioxide (CO2), C. Sulphur dioxide (SO2 D.All
- 8. 8.Vapour Compression Refrigeration System COP is ---------- A. Less B. more C.Zero D.none
- 9. 9.In Vapour Compression Refrigeration System ---------is needed to drive the system • A.Mechanical • B.Thermal • C. Electric power • D.Nuclear
- 10. 10.Air Conditioning is the process of conditioning the air according to the human comfort, irrespective of external conditions. • A.False • B.True
- 11. 11…………..is the study of the properties of atmospheric air. • A. Moisture • B. Temperature • C. Dry air • D. Psychrometry
- 12. 12.…………The atmospheric air which no water vapor is called dry air. • A. Moisture • B. Temperature • C. Dry air • D. Psychrometry
- 13. 13.……….The degree of hotness (or) Coldness is called the temperature. • A. Moisture • B. Temperature • C. Dry air • D. Psychrometry
- 14. 14.…………Moisture is the water vapour present in the air. • A. Moisture • B. Temperature • C. Dry air • D. Psychrometry
- 15. 15……………is the temperature of air measured by the ordinary thermometer is called dry bulb temperature: • A.Dry bulb temperature • B. Wet bulb temperature • C. Humidity • D. Relative humidity
- 16. 16--------- is t he temperature of air measured by the thermometer when it is covered by the wet cloth is known as wet bulbTemperature • A.Dry bulb temperature • B. Wet bulb temperature • C. Humidity • D. Relative humidity
- 17. 17.----------is the temperature at which the water vapour starts condensing is called dew point Temperature • A.Dry bulb temperature • B. Wet bulb temperature • C. Dew pointTemperature: • D. Relative humidity
- 18. 18.------------Relative humidity is the ratio of actual mass of water vapour in a given volume to the mass of water vapour actually can withhold by the same volume. • A.Dry bulb temperature • B. Wet bulb temperature • C. Dew pointTemperature: • D. Relative humidity
- 19. • 19.In the vapor absorption system the refrigerant used is ammonia, water or lithium bromide. • A.False • B.True
- 20. 18.The domestic absorption type refrigerator was invented by two Swedish engineers Carl Munters and Baltzer Von Platan in • A.1925 • B. 1935 • C. 1945 • D. 1955