Top 550+ Solved Thermal Engineering 2 MCQ Questions Answer
Q. Reaction turbine is also called as
a. impulse turbine
b. curtis wheel
c. parsons turbine
d. none of the mentioned
Q. Which of these is not an application of back pressure turbine?
a. desalination of sea water
b. filtration of water
c. process industries
d. petrochemical installations
Q. Pass-out turbines are used in which of these cases?
a. relatively high back pressure
b. small heating requirement
c. only relatively low back pressure
d. both relatively high back pressure and small heating requirement
Q. The energy transfer between the hot fluid and cold fluids is brought about by their complete physical mixing in
a. direct contact heat exchanger
b. regenerators
c. recuperators
d. boilers
Q. Which type of flow arrangement is this?
a. counter flow
b. parallel flow
c. regenerator
d. shell and tube
Q. Which of the following is not an example of recuperators type heat exchanger?
a. automobile radiators
b. condensers
c. chemical factories
d. oil heaters for an aero plane
Q. In how many categories heat exchangers are classified on the basis of direction of flow of fluids?
a. 4 categories
b. 3 categories
c. 2 categories
d. 1 categories
Q. Which of the following operations occur in a vapour refrigeration cycle?
a. compression
b. cooling and condensing
c. expansion and evaporation
d. all of the mentioned
Q. Compression can be
a. dry compression
b. wet compression
c. both of the mentioned
d. none of the mentioned
Q. Why is wet compression not preferred?
a. the liquid refrigerant can be trapped in the head of cylinder
b. this may damage the valves or cylinder head
c. liquid refrigerant can wash away the lubricating oil thus accelerating wear
d. all of the mentioned