Q.1
In a Heat Exchanger, heat cannot be transferred by all the three means, that is Conduction, Convection and Radiation simultaneously.
  • a) True
  • b) False
Q.2
In which one of the following, Heat transfer takes place without any Conduction or Convection?
Questionheat-transfer-operations-questions-answers2.jpg
  • a) Condenser
  • b) Recuperators
  • c) Cooling tower
  • d) Shell and Tube HE
Q.3
How many Heat Exchangers can be classified on the basis of phase change of the fluids?
  • a) 1
  • b) 2
  • c) 3
  • d) 4
Q.4
When we want to heat a stream of liquid by Steam, and the steam may condense into liquid. Then which of the following is best suited?
  • a) Steam on the side with the fins
  • b) Steam on the side with the fins and condensate drainage
  • c) Steam on the side with the fins and a brush to remove the condensate film from surface
  • d) Steam on the tube with the fins on inner surface of the tube passing through a pool of cooling liquid
Q.5
Which one of the following relations are correct?
  • a) K1 < K2
  • b) K1 = K2
  • c) K1 > K2
  • d) K1 and K2 relation not defined
Q.6
When we want to heat a stream of liquid by Steam, we usually keep removing the condensate from the surface of the tube.
Questionheat-transfer-operations-questions-answers6.jpg
  • a) True
  • b) False
Q.7
What is Critical radius of insulation?
  • a) The maximum radius that can allow heat transfer
  • b) The maximum heat transfer coefficient at a maximum possible radius
  • c) The radius at which maximum heat transfer rate is observed
  • d) The minimum radius at which maximum heat transfer rate is observed
0 h : 0 m : 1 s