Top 550+ Solved Thermal Engineering 2 MCQ Questions Answer
Q. What type of cooling system is used in the large power plants?
a. cooling ponds
b. natural flow system
c. cooling towers
d. single deck system
Q. How does outside air enter into the wet cooling system?
a. air vents
b. louvers
c. tuyeres
d. vacuum
Q. Why is exhaust steam coming out of turbine is admitted to a steam header?
a. to increase the pressure
b. to decrease the velocity
c. to decrease the pressure drop
d. to control the pollution
Q. In which system is Cooling of hot water is done on tray as step by?
a. mechanical draught cooling system
b. hyperbolic cooling tower
c. atmospheric cooling tower
d. wet cooling tower
Q. How is air produced in mechanical draught cooling tower?
a. air tuyeres
b. propeller fans
c. air blowers
d. louvre
Q. Why is induced draught considered better than the forced draught?
a. because power requirement is high for forced draught
b. maintenance of induced draught fan is costlier
c. forced draught is less efficient
d. forced draught produces less amount of speed of air
Q. Nozzles are used to control the ___________
a. temperature
b. rate of flow
c. mass flow rate
d. none of the mentioned
Q. A nozzle used to send fluid in coherent stream is called as ________
a. jet
b. high velocity nozzle
c. every nozzle sends fluid in coherent stream
d. none of the mentioned
Q. In fountains the type of nozzle used is _______
a. none of the mentioned
b. turbulent jet
c. high speed nozzle
d. laminar jet
Q. Nozzles used in blast furnaces are called as _______
a. jet
b. hot blast
c. tuyeres
d. none of the mentioned
Q. If mach number is less than one then its flow is ______________
a. subsonic flow
b. turbulent flow
c. laminar flow
d. none of the mentioned
Q. Nozzle used in rocket engine is __________
a. convergent nozzle
b. divergent nozzle
c. convergent – divergent nozzle
d. none of the mentioned
Q. In rocket engine the flow in the throat of the nozzle is __________
a. subsonic
b. laminar
c. turbulent
d. none of the mentioned
Q. When mach number is greater than one the flow is ________
a. subsonic
b. supersonic
c. laminar
d. none of the mentioned
Q. In rocket engines the amount of expansion in Nozzle determines the __________
a. exit temperature
b. exit pressure
c. exit temperature & pressure
d. none of the mentioned