Power System - I (3140914) MCQs

MCQs of Conventional Generation, Load Curves and Tariffs

Showing 131 to 140 out of 425 Questions
11 12 13 14 15 16
131.
In case of reaction steam turbine
(a) There is a enthalpy drop both in fixed and moving blades
(b) There is enthalpy drop only in moving blades
(c) There is enthalpy drop only in fixed blades
(d) None of above
Answer:

Option (a)

132.
The largest size of steam turbine installed in India is
(a) 100 MW
(b) 250 MW
(c) 500 MW
(d) 1,000 MW
Answer:

Option (c)

133.
As compared to steam at entry to the turbine which of the following will be larger at exit ?
(a) Flow rate
(b) Pressure
(c) Specific volume
(d) Specific enthalpy
Answer:

Option (c)

134.
For the same power, the size of a turbine
(a) Increase with speed
(b) Remains with speed
(c) Decrease with speed
(d) Insufficient data
Answer:

Option (c)

135.
The pressure on the two sides of the impulse wheel of a steam turbine
(a) Is different
(b) Is the same
(c) Reduces from one side to the other side
(d) Increases from one side to the other side
Answer:

Option (b)

136.
Reheat factor in steam turbines depends on
(a) Stage efficiency
(b) Exit pressure
(c) Initial pressure and temperature
(d) All of above
Answer:

Option (d)

137.
In steam turbines, the reheat factor
(a) Increases with the increase in number of stages
(b) Reduces with increase in number of stages
(c) Remains the same irrespective of number of stages
(d) None of above
Answer:

Option (a)

138.
The value of rehear factor for a multistage steam turbine lies in the range of
(a) 1.005 to 1.03
(b) 1.01 to 1.06
(c) 1.02 to 1.1
(d) 1.10 to 1.2
Answer:

Option (b)

139.
Steam turbines are governed by
(a) Nozzle control governing
(b) Throttle governing
(c) Bypass governing
(d) All of above
Answer:

Option (d)

140.
Topping turbines are
(a) Low pressure condensing one
(b) High pressure condensing one
(c) High pressure non-condensing one
(d) Low pressure non-condensing one
Answer:

Option (c)

Showing 131 to 140 out of 425 Questions
11 12 13 14 15 16