Top 350+ Solved Power Plant Engineering (PPE) MCQ Questions Answer
Q. What is the steam pressure limit of natural circulation boilers?
a. 650bar
b. 180bar
c. 400bar
d. 550bar
Q. Which type of boilers use orifice to control the flow circulation?
a. natural circulation boilers
b. forced convection boilers
c. once-through boilers
d. positive forced circulation boilers
Q. Which of the given boilers operate above critical pressure?
a. natural circulation boilers
b. forced circulation boilers
c. once-through boilers
d. water tube boilers
Q. Which type of boilers are called drum-less boilers?
a. natural circulation boilers
b. fire tube boilers
c. positive forced circulation boiler
d. forced circulation boiler
Q. What is the advantage of having smaller ratio of water to steam space?
a. steam can be generated at a faster even if the boiler is cold
b. increases the rate of evaporation
c. water is made cyclic, i.e., from boiler drum to water tube and back to drum
d. helps in mobilizing the boiler
Q. Chances of sediments depositing inside the water tubes in the shell is less due to?
a. low working pressure
b. natural circulation of water
c. partial circulation of water
d. high working pressure
Q. Out of the given option choose the advantage that supports fire tube boilers?
a. water circulation is cyclic
b. used as a mobile boiler
c. water circulation is limited inside boiler shell
d. bursting of flue tube does not cause any explosion
Q. Which are the major types of boilers that are operated in world today?
a. natural circulation boiler
b. forced circulation boiler
c. fire tube boiler
d. once through boiler
Q. Apart from feedheating, what should a plant have to obtain a gain in thermal efficiency?
a. lubrication
b. differential heating
c. reheating cycles
d. regenerative cycles
Q. Which of the following needs to be incorporated to prevent the low pressure turbine exhaust wetness from being excessive?
a. double regeneration
b. double carnotization
c. double reheat
d. double cooling
Q. What is the critical point of steam generation in a “once through” boiler?
a. 221.5 bar
b. 221.4 bar
c. 221.3 bar
d. 221.2 bar
Q. In a typical layout of a 215MW reheat power plant, the feed in the boiler is at?
a. 280 degree centigrade
b. 230 degree centigrade
c. 238 degree centigrade
d. 250 degree centigrade
Q. The input to the low pressure feedwater heater is from?
a. drain heater
b. drain cooler
c. drain pipe
d. none of the mentioned
Q. The best capable alternative source which can meet the future energy demand is
a. thermal power plant
b. nuclear power plant
c. hydroelectric power plant
d. geothermal power plant
Q. How much coal is required to generate energy equivalent to the energy generated by 1 kg of uranium?
a. 30000 tonnes of high grade coal
b. 300 tonnes of high grade coal
c. 10000 tonnes of high grade coal
d. 3000 tonnes of high grade coal