• HOME
  • QUIZ
  • CONTACT US
EXAMIANS
  • COMPUTER
  • CURRENT AFFAIRS
  • ENGINEERING
    • Chemical Engineering
    • Civil Engineering
    • Computer Engineering
    • Electrical Engineering
    • Mechanical Engineering
  • ENGLISH GRAMMAR
  • GK
  • GUJARATI MCQ

Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The colour of the flame of halide torch, in case of leakage of Freon refrigerant, will change to

Orange
Yellow
Red
Bright green

ANSWER DOWNLOAD EXAMIANS APP

Refrigeration and Air Conditioning
A refrigerating system operating on reversed Brayton refrigeration cycle is used for maintaining 250 K. If the temperature at the end of constant pressure cooling is 300 K and rise in the temperature of air in the refrigerator is 50 K, then the net work of compression will be (assume air as working substance with Cp = 1 kJ/kg)

100 kJ/kg
25 kJ/kg
50 kJ/kg
125 kJ/kg

ANSWER DOWNLOAD EXAMIANS APP

Refrigeration and Air Conditioning
The lowest temperature during the cycle in a vapour compression system occurs after

Compression
Expansion
Condensation
Evaporation

ANSWER DOWNLOAD EXAMIANS APP

Refrigeration and Air Conditioning
One of the purposes of sub cooling the liquid refrigerant is to

Ensure that only liquid and not the vapour enters the expansion (throttling) valve
Reduce compressor overheating
Reduce compressor discharge temperature
Increase cooling effect

ANSWER DOWNLOAD EXAMIANS APP

Refrigeration and Air Conditioning
The C.O.P. of a Carnot refrigerator in winter will be _________ as compared to C.O.P. in summer.

Same
Lower
Higher
None of these

ANSWER DOWNLOAD EXAMIANS APP

Refrigeration and Air Conditioning
If a heat pump cycle operates between the condenser temperature of +27°C and evaporator temperature of -23°C, then the Carnot COP will be

6
1.2
5
0.2

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Refrigeration and Air Conditioning

DOWNLOAD APP

  • APPLE
    from app store
  • ANDROID
    from play store

SEARCH

LOGIN HERE


  • GOOGLE

FIND US

  • 1.70K
    FOLLOW US
  • EXAMIANSSTUDY FOR YOUR DREAMS.
  • SUPPORT :SUPPORT EMAIL ACCOUNT : examians@yahoo.com

OTHER WEBSITES

  • GUJARATI MCQ
  • ACCOUNTIANS

QUICK LINKS

  • HOME
  • QUIZ
  • PRIVACY POLICY
  • DISCLAIMER
  • TERMS & CONDITIONS
  • CONTACT US
↑