Power System & Generation Test Questions(Electrical Engineering Questions ) Questions and Answers

Question 1. Turbo alternators run at speeds
  1.    Constant speed of 3000 rpm.
  2.    Constant speed of 1000 rpm.
  3.    A variable speed of above 1000 rpm.
  4.    None of the above
Explanation:-
Answer: Option C. -> A variable speed of above 1000 rpm.
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 2. The governing principle of steam turbines are ________________.
  1.    Nozzle control governing
  2.    Throttle governing
  3.    Bypass governing
  4.    All of these
Explanation:-
Answer: Option D. -> All of these
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 3. A steam turbine with no nozzle is ________________.
  1.    Reaction turbine
  2.    Impulse turbine
  3.    Both (a) and (b)
  4.    None of these
Explanation:-
Answer: Option A. -> Reaction turbine
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 4. The reheat factor in a steam turbine depends on
  1.    Stage efficiency
  2.    Initial pressure and temperature
  3.    Exit pressure
  4.    All of the above
Explanation:-
Answer: Option D. -> All of the above
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 5. The pipes carrying the steam are made of _________.
  1.    Steel
  2.    Cast iron
  3.    Aluminium
  4.    Cobalt
Explanation:-
Answer: Option A. -> Steel
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 6. The use of air preheater increase the temp of the air by about______________.
  1.    50°
  2.    20°
  3.    5°
  4.    30°
Explanation:-
Answer: Option B. -> 20°
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 7. Air- preheater in a steam power plant_____________.
  1.    Recovers the heat from the flue gases leaving the economiser.
  2.    Improves combustion rate.
  3.    Raises the temperature of the furnace gases
  4.    All of these.
Explanation:-
Answer: Option D. -> All of these.
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 8. The draught produced by the chimney is________________.
  1.    Forced draught
  2.    Natural draught
  3.    Induced draught
  4.    Balanced draught
Explanation:-
Answer: Option B. -> Natural draught
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 9. A condenser condenses the steam coming out from___________.
  1.    Boiler
  2.    Turbine
  3.    Economiser
  4.    Super heater
Explanation:-
Answer: Option B. -> Turbine
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 10. The definition of the draught system is
  1.    A device used to pull in air.
  2.    The difference between absolute gas pressure at any point in a gas flow and the ambient atmospheric pressure.
  3.    The sum of the absolute gas pressure at any point in a gas flow and the ambient atmospheric pressure.
  4.    A device used to pull out air.
Explanation:-
Answer: Option B. -> The difference between absolute gas pressure at any point in a gas flow and the ambient atmospheric pressure.
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
© Lakshya_Education.com, All Right Reserved.
Contact Us services