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Q.1
Power plant having maximum demand more than the installed rated capacity will have utilisation factor
equal to unity
less than unity
more than unity
none of the above
Q.2
For high value of diversity factor, a power station of given installed capacity will be in a position to supply
Less number of consumers
More number of consumers
Neither (A) nor (B)
Either (A) or (B)
Q.3
Most efficient plants are normally used as
peak load plants
base load plants
either (A) or (B)
none of the above
Q.4
Air will not be the working substance in which of the following ?
Closed cycle gas turbine
Open cycle gas turbine
Diesel engine
Petrol engine
Q.5
Which of the following are not repayable after a stipulated period ?
Shares
Fixed deposits
Cash certificates
Bonds
Q.6
For any type of consumer the ideal tariff is
two part tariff
three part tariff
block rate tariff
any of the above
Q.7
Annual instalment towards depreciation reduces as rate of interest increases with
sinking fund depreciation
straight line depreciation
reducing balances depreciation
none of the above
Q.8
Load curve is useful in deciding the
operating schedule of generating units
sizes of generating units
total installed capacity of the plant
all of the above
Q.9
Approximate estimation of power demand can be made by
Load survey method
Statistical methods
Mathematical method
All of the above
Q.10
Which of the following plants is almost inevitably used as base load plant ?
Diesel engine plant
Gas turbine plant
Nuclear power plant
Pumped storage plant
Q.11
In ______ fuel transportation cost is least.
nuclear power plants
diesel generating plants
steam power stations
none of the above
Q.12
Which of the following is not an operating cost ?
Maintenance cost
Fuel cost
Salaries of high officials
Salaries of operating staff
Q.13
Salvage value of the plant is always
positive
negative
zero
any of the above
Q.14
A power transformer is usually rated in
kW
kVAR
kWh
kVA
Q.15
Which of the following is the essential requirement of peak load plant?
It should run at high speed
It should produce high voltage
It should be small in size
It should be capable of starting quickly
Q.16
Which of the following power plants need the least period for installation ?
Thermal power plant
Diesel power plant
Nuclear power plant
Hydro-electric power plant
Q.17
Diversity factor has direct effect on the
fixed cost of unit generated
running cost of unit generated
both (A) and (B)
neither (A) nor (B)
Q.18
During load shedding
system power factor is changed
some loads are switched off
system voltage is reduced
system frequency is reduced Efficiency is the secondary consideration in
Q.19
Generators for peak load plants are usually designed for maximum efficiency at
25 to 50 percent full load
50 to 75 percent full load
full load
25 percent overload
Q.20
A synchronous condenser is virtually which of the following?
Induction motor
Under excited synchronous motor
Over excited synchronous motor
D.C. generator
Q.21
Which of the following is the disadvantage of a synchronous condenser ?
High maintenance cost
Continuous losses in motor
Noise
All of the above
Q.22
The efficiency of a plant is of least concern when it is selected as
peak load plant
casual run plant
either (A) or (B)
base load plant
Q.23
Large capacity generators are invariably
water cooled
natural air cooled
forced air cooled
hydrogen cooled
Q.24
Can generate power at unpredictable or uncontrolled times,
Solar power plant
Tidal power plant
Wind power plant
Any of the above
Q.25
In an interconnected system, the diversity factor of the whole system
remains unchanged
decreases
increases
none of the above
Q.26
Maximum demand on a power plant is
the greatest of all ?short time interval averaged? demand during a period
instantaneous maximum value of kVA supplied during a period
both (A) or (B)
none of the above
Q.27
which of the following plants ?
Base load plants
Peak load plants
Both (A) and (B)
none of the above
Q.28
The primary reason for low power factor is supply system is due to installation of
induction motors
synchronous motors
single phase motors
d.c. motors
Q.29
In a distribution system, in order to improve power factor, the synchronous capacitors are installed
at the receiving end
at the sending end
either (A) or (B)
none of the above
Q.30
In two part tariff, variation in load factor will affect
fixed charges
operating or running charges
both (A) and (B)
either (A) or (B)
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