Generation -04:
86) Presence
of non – condensable gasses in a geo - pressured water causes
a. Pollution problem
b. Corrosion problem
c. Flow problem
d. All of the above
87) Direct
conversion of heat energy into electrical energy is possible through
a. MHD generators
b. Fuel or solar cells
c. Thermionic converters.
d. Both (a) and (c)
e. None of these
88) In
geo thermal power plants waste water is
a. Discharged back to earth.
b. Discharged into the sea.
c. Recirculated after cooling in cooling
towers.
d. Evaporated in ponds.
89) What
is a load curve?
a. A plot of load vs current.
b. A plot of load vs time.
c. A plot of load vs duration of time.
d. Total number of units generated vs time.
90) What
does the area under the load curve represent?
a. System voltage
b. Current
c. Energy consumed
d. Maximum demand
91) What
does the highest point on the daily load curve represent?
a. Peak load
b. Maximum demand
c. Both (a) & (d)
d. None of these
92) Load
curve of a generation is always
a. Positive slope
b. Zero slope
c. Negative slope
d. Combination of (a), (b) and (c)
93) If
the daily load curve is divided by 24, what does this curve represent?
a. Average load for the day
b. Connected load
c. Maximum demand
d. Demand factor
94) What
does a mass curve represent?
a. Average load
b. The total energy consumed by the load
upto a particular time in a day
c. The number of hours for which a
particular lasts during the day
d. The variation of load during different
hours of the day
95) The
mass curve is plotted from which of the following curve?
a. Chronological curve
b. Energy load curve
c. Load duration curve
d. None of these
96) What
does a load duration curve represent?
a. The variation of load during different hours of the
day
b. Average load
c. The number of hours for which a
particular lasts during the day
d. None of the above
97) What
is the shape of the load duration curve?
a. Rectangular shape
b. Triangular
shape
c. Parabolic shape
d. Free hand sketch
98) Maximum
and Minimum loads on the load duration curve is represented on which respective
side?
a. Left and Right.
b. Right
and Left.
c. Randomly.
d. None of these.
99) What
does the chronological load curve indicate?
a. Variation in demand factor during 24 hours.
b. Variation of demand from instant to
instant during 24 hour.
c. The total energy consumed upto
different times of the day.
d. The total number of hours for which a
particular load lasts during the day.
100) What
is a load factor?
a. The ratio of average to maximum demand.
b. The ratio of maximum demand to average
load.
c. The product of maximum demand and
average load.
d. The ratio of average load to the plant
capacity.
101) What
is the load factor of a power plant?
a. Greater than unity
b. Less than unity
c. Always more than unity
d. Normally more than unity
102) The
load factor plays a key role in determining which among the following?
a. Plant capacity
b. Overall cost per unit generated
c. Overall demand
d. Both (a) and (c)
103) An
industrial consumer has a load pattern of 2000 kW 0.8 lag for 12 hours and 1000
kW unity power factor for 12 hours. What is the load factor?
a. 0.5
b. 0.55
c. 0.6
d. 0.75
104) What
is the plant capacity factor?
a. A
ratio of kWh generated to the product of plant capacity and the number of hours
for which the plant is in operation.
b. The ratio of sum of individual maximum
demands to the maximum demand on power stations.
c. The ratio of actual energy produced
to the maximum possible energy.
d. The ratio of maximum demand on the
power station to the connected load.
105) Capacity
factor will be very low when the power plant _________________.
a. is operated as base load plant.
b. is operated for supplying base load as
well as the peak loads.
c. is operated in emergency only.
d. is under maintainance.
106) A
thermal generating station has a installed capacity of 15 MW and supplies a
daily load of 10 Mw for 12 hours and 5 MW for remaining 12 hours. The plant
capacity factor for this station is _______.
a. 1
b. 0.75
c. 0.67
d. 0.5
107) In
a power station, the cost of generation of power reduces most effectively when
_______________.
a. Diversity factor alone increases.
b. Both diversity factor and load factor
increases.
c. Only load factor increases.
d. Both diversity factor and load factor
decreases.
108) What
is the diversity factor?
a. A ratio of kWh generated to the product of plant
capacity and the number of hours for which the plant is in operation.
b. The ratio of sum of individual
maximum demands to the maximum demand on power stations.
c. The ratio of actual energy produced to
the maximum possible energy.
d. The ratio of maximum demand on the power
station to the connected load.
109) What
is operating value of diversity factor?
a. Greater than unity
b. Less
than unity
c. Always more than unity
d. Normally more than unity
110) Diversity
factor is helpful in computing which of the following factors?
a. Plant capacity
b. Average
load
c. Units generated (kWh)
d. Peak demand
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