Conventional Power Generation MCQs

Which fuel is commonly used in conventional thermal power plants?
A) Solar
B) Wind
C) Coal
D) Hydrogen
Answer: C) Coal

What is the typical efficiency range of a coal-fired power plant?
A) 10-20%
B) 30-40%
C) 50-60%
D) 70-80%
Answer: C) 50-60%

Which of the following is not a component of a steam turbine?
A) Condenser
B) Boiler
C) Governor
D) Compressor
Answer: D) Compressor

The primary function of a boiler in a thermal power plant is to:
A) Generate electricity directly
B) Convert chemical energy into heat energy
C) Control the flow of steam
D) Cool the steam after it leaves the turbine
Answer: B) Convert chemical energy into heat energy

Which of the following is a disadvantage of coal-fired power plants?
A) High efficiency
B) Low emissions
C) High water consumption
D) Low maintenance cost
Answer: C) High water consumption

The process of pulverization in a coal-fired power plant is done to:
A) Reduce the size of coal particles
B) Increase the efficiency of combustion
C) Control emissions
D) Generate electricity
Answer: A) Reduce the size of coal particles

Which component of a steam turbine controls its speed?
A) Condenser
B) Governor
C) Boiler
D) Economizer
Answer: B) Governor

The Rankine cycle is used in thermal power plants to:
A) Convert nuclear energy into electricity
B) Convert heat into mechanical work
C) Generate solar energy
D) Produce chemical reactions
Answer: B) Convert heat into mechanical work

What is the typical voltage level at which electricity is generated in a power plant?
A) 110V
B) 240V
C) 480V
D) 11kV
Answer: D) 11kV

Which cooling method is commonly used in thermal power plants to condense steam?
A) Air cooling
B) Water cooling
C) Oil cooling
D) Fan cooling
Answer: B) Water cooling

The term “boiler efficiency” refers to:
A) The ratio of energy output to energy input
B) The temperature of the steam produced
C) The quality of coal used
D) The efficiency of the turbine
Answer: A) The ratio of energy output to energy input

In a thermal power plant, what is the purpose of an economizer?
A) To preheat the boiler feedwater
B) To control the temperature of steam
C) To reduce emissions
D) To increase the efficiency of the generator
Answer: A) To preheat the boiler feedwater

Which gas is released in significant quantities during the combustion of coal?
A) Oxygen
B) Nitrogen
C) Carbon dioxide
D) Hydrogen
Answer: C) Carbon dioxide

Which type of turbine is most commonly used in thermal power plants?
A) Impulse turbine
B) Reaction turbine
C) Kaplan turbine
D) Pelton turbine
Answer: B) Reaction turbine

What is the purpose of a transformer in a power plant?
A) To increase the voltage of electricity for transmission
B) To convert mechanical energy into electrical energy
C) To regulate the flow of steam
D) To cool the condenser
Answer: A) To increase the voltage of electricity for transmission

What is the approximate overall efficiency of a combined cycle power plant?
A) 20-30%
B) 40-50%
C) 60-70%
D) 80-90%
Answer: D) 80-90%

Which of the following is a renewable energy source used in conventional power generation?
A) Biomass
B) Geothermal
C) Solar
D) Wind
Answer: A) Biomass

What is the function of a deaerator in a thermal power plant?
A) To remove impurities from water
B) To heat the feedwater before entering the boiler
C) To regulate the flow of steam
D) To cool the condenser
Answer: A) To remove impurities from water

Which environmental concern is associated with coal-fired power plants?
A) Reduced greenhouse gas emissions
B) Acid rain
C) Minimal water consumption
D) Low land use
Answer: B) Acid rain

What is the purpose of a bypass system in a thermal power plant?
A) To divert excess steam
B) To regulate the temperature of the boiler
C) To control emissions
D) To cool the condenser
Answer: A) To divert excess steam

Which component of a thermal power plant is responsible for converting mechanical energy into electrical energy?
A) Turbine
B) Boiler
C) Condenser
D) Pump
Answer: A) Turbine

Which of the following is an advantage of using natural gas in thermal power plants?
A) High emissions
B) Low efficiency
C) Abundant supply
D) High water consumption
Answer: C) Abundant supply

The primary source of heat in a nuclear power plant is:
A) Coal
B) Oil
C) Uranium
D) Solar energy
Answer: C) Uranium

What is the purpose of a superheater in a steam power plant?
A) To increase the efficiency of the turbine
B) To heat the feedwater before entering the boiler
C) To remove impurities from water
D) To increase the temperature of steam
Answer: D) To increase the temperature of steam

Which pollutant is primarily controlled by flue gas desulfurization (FGD) systems?
A) Carbon monoxide
B) Nitrogen oxides
C) Sulfur dioxide
D) Particulate matter
Answer: C) Sulfur dioxide

Which of the following is a type of coal with the highest carbon content?
A) Anthracite
B) Bituminous
C) Lignite
D) Peat
Answer: A) Anthracite

Which cooling system requires large quantities of water for operation?
A) Air-cooled condenser
B) Water-cooled condenser
C) Fan-cooled condenser
D) Oil-cooled condenser
Answer: B) Water-cooled condenser

The purpose of a steam drum in a boiler is to:
A) Store excess steam
B) Separate steam from water
C) Heat the feedwater
D) Increase the pressure of steam
Answer: B) Separate steam from water

Which type of boiler has the highest thermal efficiency?
A) Fire tube boiler
B) Water tube boiler
C) Package boiler
D) Electric boiler
Answer: B) Water tube boiler

Which of the following is a disadvantage of nuclear power plants?
A) Low emissions
B) High operational cost
C) Minimal waste generation
D) Long plant life
Answer: B) High operational cost

What is the purpose of a chimney in a thermal power plant?
A) To release excess steam
B) To control emissions
C) To cool the condenser
D) To store coal
Answer: B) To control emissions

Which component of a thermal power plant is responsible for generating electricity?
A) Boiler
B) Condenser
C) Generator
D) Pump
Answer: C) Generator

The primary function of a condenser in a thermal power plant is to:
A) Generate electricity
B) Increase the temperature of steam
C) Cool and condense exhaust steam
D) Regulate the flow of steam
Answer: C) Cool and condense exhaust steam

Which of the following is a type of internal combustion engine used in power generation?
A) Steam engine
B) Diesel engine
C) Gas turbine
D) Wind turbine
Answer: B) Diesel engine

What is the purpose of a scrubber in a thermal power plant?
A) To remove impurities from water
B) To reduce emissions
C) To heat the feedwater
D) To increase the efficiency of the turbine
Answer: B) To reduce emissions

Which renewable energy source is often integrated with conventional thermal power plants for co-firing?
A) Solar
B) Wind
C) Biomass
D) Geothermal
Answer: C) Biomass

Which of the following is a disadvantage of hydroelectric power plants compared to thermal power plants?
A) High initial cost
B) High emissions
C) Low efficiency
D) Limited site availability
Answer: D) Limited site availability

The purpose of a pulverizer in a thermal power plant is to:
A) Cool the condenser
B) Control the flow of steam
C) Reduce coal to a fine powder
D) Regulate the temperature of steam
Answer: C) Reduce coal to a fine powder

Which of the following is not a component of a gas turbine power plant?
A) Combustion chamber
B) Turbine
C) Boiler
D) Compressor
Answer: C) Boiler

What is the primary advantage of using combined heat and power (CHP) systems in thermal power plants?
A) Higher electrical efficiency
B) Lower water consumption
C) Reduced emissions
D) Longer plant life
Answer: A) Higher electrical efficiency

Which environmental impact is associated with geothermal power plants?
A) Air pollution
B) Water consumption
C) Land degradation
D) Noise pollution
Answer: D) Noise pollution

The main advantage of using supercritical steam conditions in a thermal power plant is:
A) Lower operating costs
B) Higher efficiency
C) Reduced emissions
D) Faster startup time
Answer: B) Higher efficiency

Which component of a thermal power plant is responsible for maintaining the water-steam cycle?
A) Generator
B) Turbine
C) Pump
D) Condenser
Answer: C) Pump

Which of the following is a disadvantage of wind power compared to conventional thermal power plants?
A) High emissions
B) High water consumption
C) Intermittency
D) Land use
Answer: C) Intermittency

What is the primary purpose of a control rod in a nuclear reactor?
A) To heat the coolant
B) To regulate the flow of steam
C) To control the rate of fission
D) To cool the condenser
Answer: C) To control the rate of fission

The term “capacity factor” of a power plant refers to:
A) The maximum output of the plant
B) The efficiency of the plant
C) The number of workers in the plant
D) The operational hours of the plant
Answer: D) The operational hours of the plant

Which component of a thermal power plant is responsible for removing heat from the condenser?
A) Cooling tower
B) Superheater
C) Scrubber
D) Steam drum
Answer: A) Cooling tower

Which of the following renewable energy sources has the lowest environmental impact?
A) Solar
B) Wind
C) Hydroelectric
D) Biomass
Answer: A) Solar

The primary advantage of using coal gasification in power generation is:
A) Higher efficiency
B) Lower emissions
C) Reduced water consumption
D) Increased flexibility
Answer: D) Increased flexibility

What is the purpose of a relay in a power plant?
A) To generate electricity
B) To control voltage
C) To regulate the flow of steam
D) To convert mechanical energy into electrical energy
Answer: B) To control voltage

Conventional Power Generation MCQs

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