Economics Of Power Generation Mcqs – (Electrical Engineering) MCQs Latest For FPSC, PPSC, NTS, KPPSC, SPSC & Other Tests
“ Economics Of Power Generation Mcqs “. Tab this page to check “Latest Economics Of Power Generation MCQs” for the preparation of competitive mcqs, FPSC mcqs, PPSC mcqs, SPSC mcqs, KPPSC mcqs, AJKPSC mcqs, BPSC mcqs, NTS mcqs, PTS mcqs, OTS mcqs, Atomic Energy mcqs, Pak Army mcqs, Pak Navy mcqs, CTS mcqs, ETEA mcqs and others. The most occurred mcqs of Economics Of Power Generation in past papers. Past papers of Economics Of Power Generation mcqs. Past papers of Economics Of Power Generation MCQs. Economics Of Power Generation Mcqs are the necessary part of any competitive / job related exams. The Economics Of Power Generation mcqs having specific numbers in any written test. It is therefore everyone have to learn / remember the related Economics Of Power Generation mcqs. The Important series of Economics Of Power Generation Mcqs are given below:
Load factor of a power station is generally___________?
A. more than unity
B. less than unity
C. equal to unity
D. equal to zero Diversity factor is always
In two part tariff, variation in load factor will affect____________?
A. fixed charges
B. operating or running charges
C. both
D. either
Which plant can never have 100 percent load factor?
A. Peak load plant
B. Nuclear power plant
C. Base load plant
D. Hydro electric plant
Which of the following generating station has minimum running cost ?
A. Thermal
B. Hydro
C. Nuclear
D. Diesel
Static capacitors are rated in terms of_____________?
A. kWh
B. kW
C. kVAR
D. none of the above
For a power plant which of the following constitutes running cost?
A. Cost of fuel
B. Cost of wages
C. Cost of lubricants
D. All of the above
Generators for peak load plants are usually designed for maximum efficiency at____________?
A. full load
B. 50 to 75 percent full load
C. 25 to 50 percent full load
D. 25 percent overload
A power transformer is usually rated in____________?
A. kVAR
B. kW
C. kWh
D. kVA
Most efficient plants are normally used as____________?
A. peak load plants
B. base load plants
C. either of the above
D. none of the above
In a load curve the highest point represents______________?
A. peak demand
B. diversified demand
C. average demand
D. none of the above
The primary reason for low power factor is supply system is due to installation of____________?
A. induction motors
B. single phase motors
C. synchronous motors
D. d.c. motors
The efficiency of a plant is of least concern when it is selected as___________?
A. casual run plant
B. peak load plant
C. either A. or (b)
D. base load plant
Which of the following is the disadvantage of static capacitor for power factor improvement?
A. Easily damaged by high voltage
B. Short service life
C. Cannot be repaired
D. All of the above
Which lightening stroke is most dangerous?
A. Direct stroke on line conductor
B. Direct stroke on tower top
C. Indirect stroke on conductor
D. Direct stroke on ground wire
For the same cylinder dimensions and speed, which of the following engine will produce least power?
A. Diesel engine
B. Supercharged engine
C. Petrol engine
D. All of the above engines will equal power
The expected useful life of an hydroelectric power station is around_________________?
A. 30 years
B. 15 years
C. 60 years
D. 100 years
The load factor of domestic load is usually____________?
A. 10 to 15%
B. 50 to 60%
C. 30 to 40%
D. 60 to 70%
A load curve indicates___________?
A. average power used during the period
B. average kWh (kW) energy consumption during the period
C. Both of the above
D. none of the above
A consumer has to pay lesser fixed charges in____________?
A. two part tariff
B. flat rate tariff
C. maximum demand tariff
D. any of the above
The area under a load curve gives__________?
A. maximum demand
B. energy consumed
C. average demand
D. none of the above
Diversity factor has direct effect on the____________?
A. fixed cost of unit generated
B. running cost of unit generated
C. both
D. neither
Load curve is useful in deciding the_____________?
A. sizes of generating units
B. operating schedule of generating units
C. total installed capacity of the plant
D. all of the above
Load curve of a power plant has always____________?
A. positive slope
B. zero slope
C. negative slope
D. All of these
Annual depreciation of the plant it proportional to the earning capacity of the plant vide
A. straight line depreciation
B. sinking fund depreciation
C. reducing balances depreciation
D. none of the above
Load curve helps in deciding___________?
A. sizes of the generating units
B. total installed capacity of the plant
C. operating schedule of generating units
D. all of the above
A low utilization factor for a plant indicates that
A. plant is used for stand by purpose only
B. plant is used for base load only
C. plant is under maintenance
D. plant is used for peak load as well as base load
Low power factor is usually not due to___________?
A. induction motors
B. arc lamps
C. fluorescent tubes
D. incandescent lamp
Direct conversion of heat into electrical energy is possible through____________?
A. solar cells
B. fuel cells
C. MHD generators
D. none of the above
power plant is expected to have the longest life?
A. Diesel
B. Steam
C. Hydroelectric
D. Any of the above
The increased load during summer months is due to____________?
A. increased water supply
B. increased business activity
C. increased use of fans and air conditioners
D. none of the above
____________is the reserved generating capacity available for service under emergency conditions which is not kept in operation but in working order.
A. Spinning reserve
B. Cold reserve
C. Hot reserve
D. Firm power
__________ industry has the least power consumption per ton of product?
A. Sugar
B. Soap
C. Vegetable oil
D. Caustic soda
In a power plant if the maximum demand on the plant is equal to the plant capacity, then
A. plant reserve capacity will be zero
B. load factor will be unity
C. diversity factor will be unity
D. load factor will be nearly 60%
For which of the following power plants highly skilled engineers are required for running the plants?
A. Gas turbine power plants
B. Solar power plants
C. Nuclear power plants
D. Hydro-electric power plants
Large capacity generators are invariably___________?
A. natural air cooled
B. water cooled
C. forced air cooled
D. hydrogen cooled
Which of the following is the disadvantage due to low power factor?
A. Increased transmission losses
B. Poor voltage regulation
C. High cost of equipment for a given load
D. All of the above
A synchronous condenser is virtually which of the following?
A. Under excited synchronous motor
B. Induction motor
C. Over excited synchronous motor
D. D.C. generator
A pilot exciter is provided on generators for which of the following reasons?
A. To excite the poles of main exciter
B. To provide requisite starting torque to generator
C. To provide requisite starting torque to main exciter
D. None of the above
Which of the following are not repayable after a stipulated period?
A. Shares
B. Cash certificates
C. Fixed deposits
D. Bonds
In power plants insurance cover is provided for which of the following?
A. Skilled workers only
B. Unskilled workers only
C. Equipment only
D. All of the above
When the demand of consumers is not met by a power plant, it will resort to which of the following?
A. Power factor improvement at the , generators
B. Efficient plant operation
C. Penalising high load consumers by increasing the charges for electricity
D. Load shedding
An alternator coupled to a __________ runs at slow speed, as compared to as compared to others.
A. steam turbine
B. hydraulic turbine
C. diesel engine
D. gas turbine
Which of the following is an advantage of static capacitor for power factor improvement?
A. Little maintenance cost
B. Low losses
C. Ease in installation
D. All of the above
The connected load of a IVMIM uir consumer is around___________?
A. 5 kW
B. 80 kW
C. 40 kV
D. 120 kW
Which of the following is not an operating cost?
A. Fuel cost
B. Maintenance cost
C. Salaries of high officials
D. Salaries of operating staff
In which’of the following power plants the maintenance cost is usually high?
A. Hydro-electric power plants
B. Nuclear power plant
C. Thermal power plants
D. Diesel engine power plants
With reference to a power station which of the following is not a fixed cost?
A. Fuel cost
B. Insurance charges
C. Interest on capital
D. Depreciation
In _________ fuel transportation cost is least.
A. nuclear power plants
B. steam power stations
C. diesel generating plants
D. None
Which of the following, in a thermal power plant, is not a fixed cost?
A. Fuel cost
B. Depreciation
C. Interest on capital
D. Insurance charges
Air will not be the working substance in which of the following?
A. Diesel engine
B. Closed cycle gas turbine
C. Open cycle gas turbine
D. Petrol engine
During load shedding:
A. system voltage is reduced
B. some loads are switched off
C. system power factor is changed
D. system frequency is reduced Efficiency is the secondary consideration
Which of the following is not a source of power?
A. Thermocouple
B. Solar cell
C. Photovoltaic cell
D. Photoelectric cell
_____________can generate power at unpredictable or uncontrolled times?
A. Tidal power plant
B. Solar power plant
C. Wind power plant
D. Any of the above
For high value of diversity factor, a power station of given installed capacity will be in a position to supply?
A. less number of consumers
B. more number of consumers
C. neither
D. either
Maximum demand on a power plant is_________________?
A. the greatest of all “short time interval averaged” demand during a period
B. instantaneous maximum value of kVA supplied during a period
C. both of the above
D. none of the above
Approximate estimation of power demand can be made by_____________?
A. statistical methods
B. load survey method
C. mathematical method
D. economic parameters
E. all of the above
Annual depreciation cost is calculated by___________?
A. straight line method
B. sinking fund method
C. both A. and B.
D. none of the above
Depreciation charges are high in case of__________?
A. thermal plant
B. hydroelectric plant
C. diesel plant
D. none of these
High load factor indicates
A. average power used during the period
B. average kWh (kW) energy consumption during the period
C. either
D. none
Annual depreciation as per straight line method, is calculated by__________?
A. increasing a uniform sum of money per annum at stipulated rate of interest
B. the capital cost minus the salvage value, is divided by the number of years of life
C. the capital cost divided by number of year of life
D. none of the above
In Hopkinson demand rate or two part tariff the demand rate or fixed charges are__________?
A. dependent upon the energy consumed
B. dependent upon the maximum demand of the consumer
C. both
D. neither
Different generating stations use following prime movers?
A. hydraulic turbine
B. diesel engine
C. gas turbine
D. steam turbine
E. any of the above
Following power plant has instant starting?
A. nuclear power plant
B. diesel power plant
C. hydro power plant
D. both B and C
E. none of the above
Power plant having maximum demand more than the installed rated capacity will have utilization factor?
A. less than unity
B. equal to unity
C. more than unity
D. none of the above
Annual operating expenditure of a power plant consists of____________?
A. semi-fixed charges
B. fixed charges
C. running charges
D. all of the above
Annual instalment towards depreciation reduces as rate of interest increases with______________?
A. sinking fund depreciation
B. reducing balances depreciation
C. straight line depreciation
D. none of the above
Direct conversion of heat into electric power is possible through__________?
A. batteries
B. fuel cell
C. thermionic converter
D. all of the above
Which of the following should be used for extinguishing electrical fires?
A. Foam type fire extinguisher
B. Carbon tetrachloride fire extinguisher
C. Water
D. CO2 fire extinguisher
Ships are generally powered by___________?
A. hydraulic turbines
B. nuclear power plants
C. diesel engines
D. steam accumulators
E. none of the above
A nuclear power plant is invariably used as a__________?
A. stand-by plant
B. base load plant
C. peak load plant
D. spinning reserve plant
E. any of the above
___________ will offer the least load.
A. Television
B. Vacuum cleaner
C. Hair dryer
D. Electric shaver
Which of the following equipment provides fluctuating load?
A. Lathe machine
B. Exhaust fan
C. Welding transformer
D. All of the above
Salvage value of the plant is always____________?
A. negative
B. positive
C. zero
D. any of the above
Generating capacity connected to the bus bars and ready to take load when switched on is known as____________?
A. cold reserve
B. firm power
C. hot reserve
D. spinning reserve
_________offers the highest electric load.
A. Vacuum cleaner
B. Toaster
C. Television set
D. Washing machine
___________ is invariably used as base load plant.
A. Gas turbine plant
B. Nuclear power plant
C. Diesel engine plant
D. Pumped storage plant
In case of _________ fuel transportation is the major problem.
A. nuclear power plants
B. diesel power plants
C. hydro-electric power plants
D. thermal power plants
Which of the following power plants need the least period for installation ?
A. Nuclear power plant
B. Diesel power plant
C. Thermal power plant
D. Hydro-electric power plant
__________ is invariably used for peak load
A. Steam turbine plant
B. Nuclear power plant
C. Pumped storage plant
D. None of the above
Which of the following is the essential requirement of peak load plant ?
A. It should produce high voltage
B. It should run at high speed
C. It should be small in size
D. It should be capable of starting quickly
By the use of which of the following power factor can be improved?
A. Synchronous compensators
B. Phase advancers
C. Static capacitors
D. Any of the above
An induction motor has relatively high power factor at__________?
A. no load
B. rated r.p.m.
C. 20 percent load
D. near full load
In a distribution system, in order to improve power factor, the synchronous capacitors are installed__________?
A. at the receiving end
B. at the sending end
C. either of the above
D. none of the above
Which of the following is the disadvantage of a synchronous condenser?
A. Continuous losses in motor
B. High maintenance cost
C. Noise
D. All of the above
For a consumer the most economical power factor is generally____________?
A. 0.5 leading
B. 0.5 lagging
C. 0.95 lagging
D. 0.95 leading
In an interconnected system, the diversity factor of the whole system:
A. decreases
B. remains unchanged
C. increases
D. none of the above
__________ will be least affected due to charge in supply voltage frequency.
A. Mixer grinder
B. Electric clock
C. Ceiling fan
D. Room heater
Which of the following is not necessarily an advantage of interconnecting various power stations?
A. Improved frequency of power supplied
B. Increased reliability
C. Reduction in total installed capacity
D. Economy in operation of plants
For a diesel generating station the useful life is expected to be around_________Years?
A. 15 to 20 years
B. 50 to 75 years
C. 20 to 50 years
D. 75 to 100 years
Which of the following is not a method for estimating depreciation charges?
A. Straight line method
B. Sinking fund method
C. Diminishing value method
D. Halsey’s 50—50 formula
Which of the following source of power is least reliable?
A. Geothermal power
B. Solar energy
C. Wind power
D. iMHD
An over excited synchronous motor on no load is known as__________?
A. synchronous condenser
B. induction motor
C. generator
D. alternator
Which of the following plants is almost inevitably used as base load plant?
A. Gas turbine plant
B. Diesel engine plant
C. Nuclear power plant
D. Pumped storage plant
Which of the following component, in a steam power plant, needs maximum maintenance attention?
A. Condenser
B. Steam turbine
C. Water treatment plant
D. Boiler
The effect of electric shock on human body depends on which of the following?
A. voltage
B. current
C. duration of contact
D. all of the above
Which of the following devices may be used to provide protection against lightening over voltages?
A. Rod gaps
B. Horn gaps
C. Surge absorbers
D. All of the above
Load shedding is possible through which of the following?
A. Frequency reduction
B. Switching of the loads
C. Voltage reduction
D. Any of the above
The knowledge of diversity factor helps in determining__________?
A. plant capacity
B. peak load
C. average load
D. kWh generated