Economics Of Power Generation MCQs

Option A: plant capacity

Option B: average load

Option C: peak load

Option D: kWh generated

Correct Answer: plant capacity ✔

Option A: Switching of the loads

Option B: Frequency reduction

Option C: Voltage reduction

Option D: Any of the above

Correct Answer: Any of the above ✔

Option A: Horn gaps

Option B: Rod gaps

Option C: Surge absorbers

Option D: All of the above

Correct Answer: All of the above ✔

Option A: current

Option B: voltage

Option C: duration of contact

Option D: all of the above

Correct Answer: all of the above ✔

Option A: Steam turbine

Option B: Condenser

Option C: Water treatment plant

Option D: Boiler

Correct Answer: Boiler ✔

Option A: Diesel engine plant

Option B: Gas turbine plant

Option C: Nuclear power plant

Option D: Pumped storage plant

Correct Answer: Nuclear power plant ✔

Option A: synchronous condenser

Option B: generator

Option C: induction motor

Option D: alternator

Correct Answer: synchronous condenser ✔

Option A: Solar energy

Option B: Geothermal power

Option C: Wind power

Option D: iMHD

Correct Answer: iMHD ✔

Option A: Sinking fund method

Option B: Straight line method

Option C: Diminishing value method

Option D: Halsey’s 50—50 formula

Correct Answer: Halsey’s 50—50 formula ✔

Option A: 15 to 20 years

Option B: 20 to 50 years

Option C: 50 to 75 years

Option D: 75 to 100 years

Correct Answer: 15 to 20 years ✔

Option A: Improved frequency of power supplied

Option B: Reduction in total installed capacity

Option C: Increased reliability

Option D: Economy in operation of plants

Correct Answer: Improved frequency of power supplied ✔

Option A: Electric clock

Option B: Mixer grinder

Option C: Ceiling fan

Option D: Room heater

Correct Answer: Room heater ✔

Option A: remains unchanged

Option B: decreases

Option C: increases

Option D: none of the above

Correct Answer: increases ✔

Option A: 0.5 lagging

Option B: 0.5 leading

Option C: 0.95 lagging

Option D: 0.95 leading

Correct Answer: 0.95 lagging ✔

Option A: High maintenance cost

Option B: Continuous losses in motor

Option C: Noise

Option D: All of the above

Correct Answer: All of the above ✔

Option A: at the receiving end

Option B: at the sending end

Option C: either A. or (b)

Option D: none of the above

Correct Answer: at the receiving end ✔

Option A: rated r.p.m.

Option B: no load

Option C: 20 percent load

Option D: near full load

Correct Answer: near full load ✔

Option A: Phase advancers

Option B: Synchronous compensators

Option C: Static capacitors

Option D: Any of the above

Correct Answer: Any of the above ✔

Option A: It should run at high speed

Option B: It should produce high voltage

Option C: It should be small in size

Option D: It should be capable of starting quickly

Correct Answer: It should be capable of starting quickly ✔

Option A: Nuclear power plant

Option B: Steam turbine plant

Option C: Pumped storage plant

Option D: None of the above

Correct Answer: Pumped storage plant ✔

Option A: Thermal power plant

Option B: Diesel power plant

Option C: Nuclear power plant

Option D: Hydro-electric power plant

Correct Answer: Diesel power plant ✔

Option A: diesel power plants

Option B: nuclear power plants

Option C: hydro-electric power plants

Option D: thermal power plants

Correct Answer: thermal power plants ✔

Option A: Diesel engine plant

Option B: Nuclear power plant

Option C: Gas turbine plant

Option D: Pumped storage plant

Correct Answer: Nuclear power plant ✔

Option A: Television set

Option B: Toaster

Option C: Vacuum cleaner

Option D: Washing machine

Correct Answer: Toaster ✔

Option A: firm power

Option B: cold reserve

Option C: hot reserve

Option D: spinning reserve

Correct Answer: spinning reserve ✔

Option A: positive

Option B: negative

Option C: zero

Option D: any of the above

Correct Answer: any of the above ✔

Option A: Exhaust fan

Option B: Lathe machine

Option C: Welding transformer

Option D: All of the above

Correct Answer: Welding transformer ✔

Option A: Vacuum cleaner

Option B: Television

Option C: Hair dryer

Option D: Electric shaver

Correct Answer: Electric shaver ✔

Option A: peak load plant

Option B: base load plant

Option C: stand-by plant

Option D: spinning reserve plant

Correct Answer: base load plant ✔

Option A: nuclear power plants

Option B: hydraulic turbines

Option C: diesel engines

Option D: steam accumulators

Correct Answer: diesel engines ✔

Option A: Water

Option B: Carbon tetrachloride fire extinguisher

Option C: Foam type fire extinguisher

Option D: CO2 fire extinguisher

Correct Answer: Carbon tetrachloride fire extinguisher ✔

Option A: fuel cell

Option B: batteries

Option C: thermionic converter

Option D: all of the above

Correct Answer: thermionic converter ✔

Option A: sinking fund depreciation

Option B: straight line depreciation

Option C: reducing balances depreciation

Option D: none of the above

Correct Answer: sinking fund depreciation ✔

Option A: fixed charges

Option B: semi-fixed charges

Option C: running charges

Option D: all of the above

Correct Answer: all of the above ✔

Option A: equal to unity

Option B: less than unity

Option C: more than unity

Option D: none of the above

Correct Answer: more than unity ✔

Option A: nuclear power plant

Option B: hydro power plant

Option C: diesel power plant

Option D: both B and C

Correct Answer: both B and C ✔

Option A: diesel engine

Option B: hydraulic turbine

Option C: gas turbine

Option D: steam turbine

Correct Answer: any of the above ✔

Option A: dependent upon the energy consumed

Option B: dependent upon the maximum demand of the consumer

Option C: both A and B

Option D: neither A nor B

Correct Answer: dependent upon the maximum demand of the consumer ✔

Option A: the capital cost divided by number of year of life

Option B: the capital cost minus the salvage value, is divided by the number of years of life

Option C: increasing a uniform sum of money per annum at stipulated rate of interest

Option D: none of the above

Correct Answer: the capital cost minus the salvage value, is divided by the number of years of life ✔

Option A: average power used during the period

Option B: average kWh (kW) energy consumption during the period

Option C: either of the above

Option D: none of the above

Correct Answer: average kWh (kW) energy consumption during the period ✔

Option A: thermal plant

Option B: diesel plant

Option C: hydroelectric plant

Option D: none of these

Correct Answer: thermal plant ✔

Option A: sinking fund method

Option B: straight line method

Option C: both A. and B.

Option D: none of the above

Correct Answer: C. both A. and B. ✔

Option A: load survey method

Option B: statistical methods

Option C: mathematical method

Option D: economic parameters

Correct Answer: all of the above ✔

Option A: the greatest of all “short time interval averaged” demand during a period

Option B: instantaneous maximum value of kVA supplied during a period

Option C: both A. or B.

Option D: none of the above

Correct Answer: the greatest of all “short time interval averaged” demand during a period ✔

Option A: less number of consumers

Option B: more number of consumers

Option C: neither A. nor B.

Option D: either A. or B.

Correct Answer: more number of consumers ✔

Option A: Solar power plant

Option B: Tidal power plant

Option C: Wind power plant

Option D: Any of the above

Correct Answer: Any of the above ✔

Option A: Thermocouple

Option B: Photovoltaic cell

Option C: Solar cell

Option D: Photoelectric cell

Correct Answer: Thermocouple ✔

Option A: system power factor is changed

Option B: some loads are switched off

Option C: system voltage is reduced

Option D: system frequency is reduced Efficiency is the secondary consideration in

Correct Answer: some loads are switched off ✔

Option A: Open cycle gas turbine

Option B: Closed cycle gas turbine

Option C: Diesel engine

Option D: Petrol engine

Correct Answer: Closed cycle gas turbine ✔

Option A: Fuel cost

Option B: Interest on capital

Option C: Depreciation

Option D: Insurance charges

Correct Answer: Fuel cost ✔

Option A: nuclear power plants

Option B: diesel generating plants

Option C: steam power stations

Option D: None

Correct Answer: nuclear power plants ✔

Option A: Fuel cost

Option B: Interest on capital

Option C: Insurance charges

Option D: Depreciation

Correct Answer: Fuel cost ✔

Option A: Nuclear power plant

Option B: Hydro-electric power plants

Option C: Thermal power plants

Option D: Diesel engine power plants

Correct Answer: Thermal power plants ✔

Option A: Maintenance cost

Option B: Fuel cost

Option C: Salaries of high officials

Option D: Salaries of operating staff

Correct Answer: Salaries of high officials ✔

Option A: 5 kW

Option B: 40 kV

Option C: 80 kW

Option D: 120 kW

Correct Answer: 5 kW ✔

Option A: Little maintenance cost

Option B: Ease in installation

Option C: Low losses

Option D: All of the above

Correct Answer: All of the above ✔

Option A: diesel engine

Option B: hydraulic turbine

Option C: steam turbine

Option D: gas turbine

Correct Answer: hydraulic turbine ✔

Option A: Efficient plant operation

Option B: Power factor improvement at the , generators

Option C: Penalising high load consumers by increasing the charges for electricity

Option D: Load shedding

Correct Answer: Load shedding ✔

Option A: Unskilled workers only

Option B: Skilled workers only

Option C: Equipment only

Option D: All of the above

Correct Answer: All of the above ✔

Option A: Shares

Option B: Fixed deposits

Option C: Cash certificates

Option D: Bonds

Correct Answer: Shares ✔

Option A: To excite the poles of main exciter

Option B: To provide requisite starting torque to main exciter

Option C: To provide requisite starting torque to generator

Option D: None of the above

Correct Answer: To excite the poles of main exciter ✔

Option A: Induction motor

Option B: Under excited synchronous motor

Option C: Over excited synchronous motor

Option D: D.C. generator

Correct Answer: Over excited synchronous motor ✔

Option A: Poor voltage regulation

Option B: Increased transmission losses

Option C: High cost of equipment for a given load

Option D: All of the above

Correct Answer: All of the above ✔

Option A: water cooled

Option B: natural air cooled

Option C: forced air cooled

Option D: hydrogen cooled

Correct Answer: hydrogen cooled ✔

Option A: Solar power plants

Option B: Gas turbine power plants

Option C: Nuclear power plants

Option D: Hydro-electric power plants

Correct Answer: Nuclear power plants ✔

Option A: plant reserve capacity will be zero

Option B: diversity factor will be unity

Option C: load factor will be unity

Option D: load factor will be nearly 60%

Correct Answer: plant reserve capacity will be zero ✔

Option A: Soap

Option B: Sugar

Option C: Vegetable oil

Option D: Caustic soda

Correct Answer: Vegetable oil ✔

Option A: Hot reserve

Option B: Cold reserve

Option C: Spinning reserve

Option D: Firm power

Correct Answer: Cold reserve ✔

Option A: increased business activity

Option B: increased water supply

Option C: increased use of fans and air conditioners

Option D: none of the above

Correct Answer: increased use of fans and air conditioners ✔

Option A: Steam

Option B: Diesel

Option C: Hydroelectric

Option D: Any of the above

Correct Answer: Hydroelectric ✔

Option A: fuel cells

Option B: solar cells

Option C: MHD generators

Option D: none of the above

Correct Answer: MHD generators ✔

Option A: arc lamps

Option B: induction motors

Option C: fluorescent tubes

Option D: incandescent lamp

Correct Answer: incandescent lamp ✔

Option A: plant is used for stand by purpose only

Option B: plant is under maintenance

Option C: plant is used for base load only

Option D: plant is used for peak load as well as base load

Correct Answer: plant is used for stand by purpose only ✔

Option A: total installed capacity of the plant

Option B: sizes of the generating units

Option C: operating schedule of generating units

Option D: all of the above

Correct Answer: all of the above ✔

Option A: sinking fund depreciation

Option B: straight line depreciation

Option C: reducing balances depreciation

Option D: none of the above

Correct Answer: reducing balances depreciation ✔

Option A: zero slope

Option B: positive slope

Option C: negative slope

Option D: All of these

Correct Answer: All of these ✔

Option A: operating schedule of generating units

Option B: sizes of generating units

Option C: total installed capacity of the plant

Option D: all of the above

Correct Answer: all of the above ✔

Option A: fixed cost of unit generated

Option B: running cost of unit generated

Option C: both A. and B.

Option D: neither A. nor B.

Correct Answer: fixed cost of unit generated ✔

Option A: average demand

Option B: energy consumed

Option C: maximum demand

Option D: none of the above

Correct Answer: energy consumed ✔

Option A: flat rate tariff

Option B: two part tariff

Option C: maximum demand tariff

Option D: any of the above

Correct Answer: maximum demand tariff ✔

Option A: average power used during the period

Option B: average kWh (kW) energy consumption during the period

Option C: either of the above

Option D: none of the above

Correct Answer: average kWh (kW) energy consumption during the period ✔

Option A: 10 to 15%

Option B: 30 to 40%

Option C: 50 to 60%

Option D: 60 to 70%

Correct Answer: 10 to 15% ✔

Option A: 15 years

Option B: 30 years

Option C: 60 years

Option D: 100 years

Correct Answer: 100 years ✔

Option A: Supercharged engine

Option B: Diesel engine

Option C: Petrol engine

Option D: All of the above engines will equal power

Correct Answer: Petrol engine ✔

Option A: Direct stroke on line conductor

Option B: Indirect stroke on conductor

Option C: Direct stroke on tower top

Option D: Direct stroke on ground wire

Correct Answer: Direct stroke on line conductor ✔

Option A: Easily damaged by high voltage

Option B: Cannot be repaired

Option C: Short service life

Option D: All of the above

Correct Answer: All of the above ✔

Option A: peak load plant

Option B: casual run plant

Option C: either A. or (b)

Option D: base load plant

Correct Answer: C. either A. or (b) ✔

Option A: induction motors

Option B: synchronous motors

Option C: single phase motors

Option D: d.c. motors

Correct Answer: induction motors ✔

Option A: peak demand

Option B: average demand

Option C: diversified demand

Option D: none of the above

Correct Answer: peak demand ✔

Option A: peak load plants

Option B: base load plants

Option C: either A. or (b)

Option D: none of the above

Correct Answer: base load plants ✔

Option A: kW

Option B: kVAR

Option C: kWh

Option D: kVA

Correct Answer: kVA ✔

Option A: 25 to 50 percent full load

Option B: 50 to 75 percent full load

Option C: full load

Option D: 25 percent overload

Correct Answer: 50 to 75 percent full load ✔

Option A: Cost of wages

Option B: Cost of fuel

Option C: Cost of lubricants

Option D: All of the above

Correct Answer: All of the above ✔

Option A: kW

Option B: kWh

Option C: kVAR

Option D: none of the above

Correct Answer: kVAR ✔

Option A: Nuclear

Option B: Hydro

Option C: Thermal

Option D: Diesel

Correct Answer: Hydro ✔

Option A: Peak load plant

Option B: Base load plant

Option C: Nuclear power plant

Option D: Hydro electric plant

Correct Answer: Peak load plant ✔

Option A: fixed charges

Option B: operating or running charges

Option C: both A. and (b)

Option D: either A. or (b)

Correct Answer: operating or running charges ✔

Option A: equal to unity

Option B: less than unity

Option C: more than unity

Option D: equal to zero Diversity factor is always

Correct Answer: less than unity ✔