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?
- 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.
- 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