Objective Type Question or MCQ of Power Generation page-11
101. A positive pressure is developed in the penstock when the alternator load is suddenly
a) Increased
b) Decreased
c) Removed
d) Short-circuited
Ans: (b)
a) Dam, reservoir, catchment area
b) Tunnels, surge tanks, pipelines and tailrace
c) Hydraulic turbines and coupled alternators
d) All of these
Ans: (d)
a) Close to the power house
b) At an elevated place
c) Both (a) and (b) above
d) At a lower place
Ans: (c)
a) Reaction turbines for low and medium heads
b) Impulse turbines for medium and high heads
c) Both (a) and (b) above
d) Pelton turbines for low heads
Ans: (c)
a) Opened
b) Closed
c) Loaded
d) Both (b) and (c) above
Ans: (a)
a) More cost of installation
b) Less maintenance and fuel cost
c) Both (a) and (b) above
d) Low depreciation charges
Ans: (c)
a) Discharge duration curve
b) Hydrograph
c) Load curve
d) Flow histogram
Ans: (b)
a) Cylindrical rotor
b) Salient pole rotor
c) Nonsalient pole rotor
d) Round rotor with ac excitation
Ans: (b)
a) Mc
b) 1/2 m2c
c) mc2
d) 1/2 mc2
Ans: (b)
a) 0.235
b) 235
c) 2.35
d) 0.7
Ans: (d)
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