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What is the purpose of the turbines in coal fired power plants?

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Description :

The problematic pollutants in emission of coal based generating plants __________.  (A) SO₂ (B) NOx (C) CO (D) All of the above

Answer :

The problematic pollutants in emission of coal based generating plants __________.  (A) SO₂ (B) NOx (C) CO (D) All of the above

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Description :

In hydroelectric power plants  (1) both operating and initial cost are high (2) both operating and initial cost are low (3) operating cost is low and initial cost is high (4) operating cost is high and initial cost is low

Answer :

In hydroelectric power plants operating cost is low and initial cost is high

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Description :

With a neat diagram explain medium head hydro-electric power plants. 

Answer :

Diagram of medium head hydro-electric power plants:  Explanation:- If head of water is between 30 and 100 m, the plant is called a medium-head plant. Potential energy of ... Francis turbines are normally used. Alternator required in these plants is of low speed and large in diameter. 

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Description :

State advantages of Pulverized coal w.r.t. thermal power plant. 

Answer :

Advantages of Pulverized coal w.r.t. thermal power plant.  1. Due to pulvarization amount of fuel required to produce same amount of heat reduces. 2. Time required for combution reduces ... of air and thorough mixing of air and fuel, very high-combustion temperatures can be attained.

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Description :

What is base load and peak load power plants?

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Description :

List any two types of fuels used in electrical power generation plants.

Answer :

Types of fuels used in electrical power generation plants:  1) Solid fuels: Coal, Biomass: Wood, Nuclear fuel: Uranium, Plutonium  2) Liquid fuels: Diesel, Petrol  3) Gaseous Fuels: Natural gas, Producer ... 2) Wood 3) Uranium 4) Plutonium 5) Diesel 6) Petrol 7) Natural gas 8) Producer gas

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Description :

Classify hydro-electric power plants according to water flow regulation and explain in brief.

Answer :

Classification of hydro-electric power plants according to water flow regulation of water flow:-  1. Large reservoir power plant 2. Run-off river (ROR) power plant with poundage 3. Run-off River ... depends upon rate of flow of water Initial cost is less Its purpose is to generate electricity.

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Description :

State why nuclear power plants are used as base load plants and diesel power plants as a peak load plant. 

Answer :

1. Because of following points Nuclear power plant used as base load power plant:-  1. Nuclear power plants is very economical for producing bulk amount of electric power 2. Nuclear power plant is reliable ... . The plants can be put on load easily. 4. Diesel engines take less time to make OFF.

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Description :

State any two applications of diesel power plants.

Answer :

Applications of Diesel Power Plant: 1. It can be used as a standby (emergency) power plant to maintain continuity of supply. (Incase failure of main supply like hospital, Telephone exchange Radio ... . The diesel units can be used to supply the auxiliaries for starting the large thermal plants.

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Description :

For optimum generator scheduling for different power plants, the minimum fuel cost is obtained when

Answer :

For optimum generator scheduling for different power plants, the minimum fuel cost is obtained when The incremental fuel cost of each plant multiplied by the penalty factor is the same

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Description :

Write the purpose of coal and ash handling unit. Also write different activities that arc carried out in this unit.

Answer :

Purpose of coal and ash handling unit :-  To transport coal from coal storage to power plant. A large quantity of ash about 10 to 30 % produced in furnace, the removal of ash from boiler furnace ... disposed off.  Various methods of disposal of ash:  Mechanical system.  Pneumatic system.

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Description :

Name the turbines used in HPS. For the heads 30 M and less and 200 M and above.

Answer :

For the heads 30 M and less :  1. Multi jet pelton wheel 2. Cross flow turbine 3. Turgo turbine 4. Francis turbine 5. Overshot Water Wheel 6. Pitch back Water Wheel  For the heads 200 M and above:-  1. Francis turbine 2. Pelton wheel turbine

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Description :

State the types of wind turbines. 

Answer :

The types of Wind Turbines:-  1) Vertical axis wind turbine (VAWT)   2) Horizontal axis wind turbine (HAWT)   i) Up wind HAWT   ii) Down Wind HAWT  OR  The types of wind turbines:-  1. Small size wind turbine  2. Medium size wind turbine  3. Large size wind turbine 

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Description :

The transfer of energy for reaction turbines is based on _______ A) Newton’s first law B) Newton’s second law C) Newton’s third law D) All the above

Answer :

The transfer of energy for reaction turbines is based on Newton’s third law

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Description :

Classify the hydro-electric plants according to the head and load basis.  

Answer :

Classification the hydro-electric plants According to availability of Head of Water:  1. Very high head power plant 2. High head power plant 3. Medium head power plant 4. Low head power plant  ... -electric plants According to Load basis:   1. Base load power plant 2. Peak load power plant

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Description :

Answer :

Generators for peak load plants are usually designed for maximum efficiency at 50 to 75 percent full load.

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Description :

Answer :

Most efficient plants are normally used as base load plants.

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Answer :

In case of a steam engine an average coal consumption per km is nearly 28 to 30 kg.

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Description :

What is the largest power plant in the world?

Answer :

japam

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Description :

What are the criteria for selection of site for hydroelectric power plant?

Answer :

Following Factors to be kept while site selecting for Hydro power plant:  1. It should be located where high rain fall occurs. 2. A large catchments area must be available to store water. 3. It ... 12. Cost of land should be less. 13. Skilled and unskilled man power should be available nearby.

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Description :

What is the maximum value of power factor?

Answer :

1 is the maximum value of power factor.

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Description :

What is the most common type of power plant?

Answer :

Hydroelectric  power  plant.

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Description :

What are the types of power generation?

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Description :

What is the power generation?

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Description :

In hydel power station, the motion produced in turbines is due to (1) flow of water (2) burning of coal (3) burning of diesel (4) production of steam

Answer :

flow of water

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Answer :

Because of following advantages concentrating type collector are used in solar power plant: -  1. Temperature: Temperature obtained is high because absorber area is less and collector/reflector area ... results: As tracking system is used better results are obtain than flat type collector.

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Description :

List the types of turbine used in hydro power plant.  

Answer :

Following types of turbine used in hydro power plant:  1.Pelton wheel 2.Francis Turbine 3.Kaplan Turbine 4.Propeller Turbine 

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Description :

In a thermal power plant, ash is collected in

Answer :

In a thermal power plant, ash is collected in hoppers or bunkers

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Answer :

In a power plant if the maximum demand on the plant is equal to the plant capacity, then plant reserve capacity will be zero.

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Answer :

In a distribution system, in order to improve power factor, the synchronous capacitors are installed at the receiving end.

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Description :

Answer :

For high value of diversity factor, a power station of given installed capacity will be in a position to supply more number of consumers.

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Description :

State the purpose of surge tank and spill way in hydroelectric power station.

Answer :

Surge tank :- A surge tank is the small reservoir or tank. It is open at the top. It is installed near Vale house of turbine. It avoids water hammer effect when load on turbine reduces. (It ... ; during floods etc. In this way spill way avoids damage of dam due to excess pressure of water.

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Description :

Answer :

The contacts of high voltage switches used in power system are submerged in oil. The main purpose of the oil is to extinguish the arc.

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Description :

Explain the function of different parts of a typical nuclear power plant with neat sketch. 

Answer :

Functions of each part of Nuclear power plant:-  1) Nuclear Reactor: In nuclear reactor the fuel rod of U235 is placed through which tremendous amount of heat energy is ... is mechanically coupled with steam turbine. 8) Alternator: It converts mechanical energy into electrical energy.

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Description :

With a neat diagram explain pumped storage hydro power plant. 

Answer :

Diagram of pumped storage hydro power plant: Explanation: In this power plant, generator is so designed that it Converts mechanical power into electrical power and also works as a ... helps in reducing a reserve capacity of PP as it provides additional power during peak load period. 

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Description :

Draw a layout of a thermo-chemical based power plant. 

Answer :

Layout of a thermo-chemical based power plant:  In this process dry biomass fuels converted to produce gas ,liquid fuels or oil by thermo chemical conversion Thermo-Chemical conversion are of following ways:- 1. Direct combustion 2. Gasification 3. Pyrolysis

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Description :

With a neat diagram explain solar photovoltaic power plant. 

Answer :

Diagram of solar photovoltaic power plant :  Explanation:  Solar power plant consists of following components:  1. Photovoltaic cell panel: Its function is to convert sunrays directly into DC ... .  5. Step-up transformer: It step-up input voltage to utilization voltage e.g. 230V

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Description :

Answer :

Diagram explain solar power tower : All concentrating solar thermal power (STP) basic elements: Concentrator Receiver Transport-storage (a portion of the thermal energy ... with alternator which converts mechanical power to electrical energy Exhaust steam is condensate in condenser

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Description :

Power generation cost reduces as (A) Diversity factor increases and load factor decreases. (B) Diversity factor decreases and load factor increases. (C) Both diversity factor and load factor increase. (D) Both diversity factor and load factor decrease

Answer :

Power generation cost reduces as Both diversity factor and load factor increase.

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Description :

The overall efficiency of Thermal Power Plant is equal to _______________ .  (A) Regenerative Cycle Efficiency (B) Renkine Cycle Efficiency (C) Carnot cycle efficiency (D) None of the above

Answer :

The overall efficiency of Thermal Power Plant is equal to Regenerative Cycle Efficiency. 

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Description :

The rankine cycle efficiency of steam power plant is  (1) 60-80% (3) 30-45% (2) 45-80% (4) 20-30%

Answer :

The rankine cycle efficiency of steam power plant is 30-45%

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Description :

Answer :

An induction motor has relatively high power factor at near full load.

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Description :

Answer :

For a consumer the most economical power factor is generally 0.95 lagging .

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Description :

Answer :

The primary reason for low power factor is supply system is due to installation of induction motors.

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Description :

Answer :

Maximum demand on a power plant is the greatest of all "short time interval averaged" demand during a period.

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Description :

Answer :

Annual operating expenditure of a power plant consists of fixed charges, semi-fixed charges, running charges.

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Description :

Answer :

Power plant having maximum demand more than the installed rated capacity will have utilisation factor more than unity.

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Description :

Answer :

Approximate estimation of power demand can be made by load survey method, statistical methods, mathematical method, economic parameters.

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