Discussion
Home ‣ Mechanical Engineering ‣ Heat Transfer, Refrigeration and Air Conditioning Comments
- Question
The radiation emitted by a black body is known as
Options- A. black radiation
- B. full radiation
- C. total radiation
- D. all of these
- Correct Answer
- all of these
- 1. Which of the following statement is correct?
Options- A. The human body can lose heat even if its temperature is less than the atmospheric temperature.
- B. The increase in air movement increases the evaporation from the human body.
- C. The warm air increases the rate of radiation of heat from the human body.
- D. both (a) and (b) Discuss
- 2. The condition of refrigerant as it leaves the compressor in a vapour compression system is
Options- A. saturated liquid
- B. wet vapour
- C. dry saturated vapour
- D. superheated vapour Discuss
- 3. In a vapour compression system, the condition of refrigerant before entering the expansion or throttle valve is
Options- A. high pressure saturated liquid
- B. wet vapour
- C. very wet vapour
- D. dry vapour Discuss
- 4. The condition of refrigerant after passing through the expansion or throttle valve, in a vapour compression system is
Options- A. high pressure saturated liquid
- B. wet vapour
- C. very wet vapour
- D. dry vapour Discuss
- 5. In a shell and coil condenser, water flows in the shell and the refrigerant in the coil.
Options- A. True
- B. False Discuss
- 6. In case of liquids and gases, the heat transfer takes place according to
Options- A. conduction
- B. convection
- C. radiation
- D. none of these Discuss
- 7. The minimum temperature to which water can be cooled in a cooling tower is
Options- A. dew point temperature of air
- B. wet bulb temperature of air
- C. dry bulb temperature of air
- D. ambient air temperature Discuss
- 8. The specific humidity during heating and humidification process.
Options- A. remains constant
- B. increases
- C. decreases Discuss
- 9. The process of adding moisture to the air, without change in its dry bulb temperature, is known as humidification.
Options- A. Agree
- B. Disagree Discuss
- 10. The boiling point of __________ is -10.5°C.
Options- A. ammonia
- B. R-12
- C. sulphur dioxide
- D. carbon dioxide Discuss
Heat Transfer, Refrigeration and Air Conditioning problems
Search Results
Correct Answer: both (a) and (b)
Correct Answer: superheated vapour
Correct Answer: high pressure saturated liquid
Correct Answer: very wet vapour
Correct Answer: False
Correct Answer: convection
Correct Answer: wet bulb temperature of air
Correct Answer: increases
Correct Answer: Agree
Correct Answer: sulphur dioxide
Comments
There are no comments.More in Mechanical Engineering:
Programming
Copyright ©CuriousTab. All rights reserved.