Last Answer : More than 100%
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158 views
2 answers
asked
Mar 20, 2018
by
anonymous

Power station having Load factor = 70%, capacity factor = 50%, used factor = 60%, maximum demand = 20MW then annual energy production is (1) 122.8 GWh (2) 198.55 GWh (3) 128.2 GWh (4) 188.82 GWh
Last Answer : Power station having Load factor = 70%, capacity factor = 50%, used factor = 60%, maximum demand = 20MW then annual energy production is 122.8 GWh
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148 views
1 answer
asked
Apr 29, 2018
by
anonymous

Last Answer : In a distribution system, in order to improve power factor, the synchronous capacitors are installed at the receiving end.
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185 views
1 answer
asked
Mar 20, 2018
by
anonymous
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Last Answer : Load factor of a power station is generally less than unity.
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107 views
1 answer
asked
Mar 20, 2018
by
anonymous

Last Answer : Load factor of a power station is defined as average load/maximum demand.
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321 views
1 answer
asked
Mar 20, 2018
by
anonymous

Last Answer : The primary reason for low power factor is supply system is due to installation of induction motors.
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115 views
1 answer
asked
Mar 20, 2018
by
anonymous

What is the maximum value of power factor?
Last Answer : 1 is the maximum value of power factor.
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118 views
1 answer
asked
Mar 19, 2018
by
anonymous

Last Answer : In an interconnected system, the diversity factor of the whole system increases.
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193 views
1 answer
asked
Mar 20, 2018
by
anonymous

Diversity factor has direct effect on the?
Last Answer : Diversity factor has direct effect on the fixed cost of unit generated.
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187 views
1 answer
asked
Mar 20, 2018
by
anonymous

Last Answer : An induction motor has relatively high power factor at near full load.
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91 views
1 answer
asked
Mar 20, 2018
by
anonymous

The following formula is correct: (A) Diversity factor =1 / Coincidence Factor (B) Diversity factor =1 x Coincidence Factor (C) Diversity factor =1 - Coincidence Factor (D) All of the above
Last Answer : The following formula is correct: (A) Diversity factor =1 / Coincidence Factor (B) Diversity factor =1 x Coincidence Factor (C) Diversity factor =1 - Coincidence Factor (D) All of the above
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84 views
1 answer
asked
May 8, 2018
by
anonymous

The knowledge of diversity factor helps in computing (1) Plant capacity (2) Average load (3) Units (kWh) generated (4) Peak demand
Last Answer : The knowledge of diversity factor helps in computing Plant capacity
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567 views
1 answer
asked
Apr 30, 2018
by
anonymous

Last 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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273 views
1 answer
asked
Mar 20, 2018
by
anonymous

Power factor of the system is kept high?
Last Answer : Power factor of the system is kept high to reduce line losses, to maximise the utilization of the capacities of generators, lines and transformers, to reduce voltage regulation of the line.
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143 views
1 answer
asked
Mar 25, 2018
by
anonymous

What is the advantage of high power factor?
Last Answer : Reduced copper losses Smaller conductor size Improve voltage regulation Increase system capability Less energy bill
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103 views
2 answers
asked
Mar 10, 2018
by
anonymous

Last Answer : High load factor indicates total plant capacity is utilised for most of the time.
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101 views
1 answer
asked
Mar 20, 2018
by
anonymous

A capacitor-start single phase induction motor is switched on to supply with its capacitor replaced by an inductor of equivalent reactance value. It will?
Last Answer : A capacitor-start single phase induction motor is switched on to supply with its capacitor replaced by an inductor of equivalent reactance value. It will not start at all.
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231 views
1 answer
asked
Mar 20, 2018
by
anonymous

Last Answer : For a consumer the most economical power factor is generally 0.95 lagging .
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209 views
1 answer
asked
Mar 20, 2018
by
anonymous

Can a synchronous condenser improve power factor?
Last Answer : Yes, synchronous condenser can improve power factor.
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90 views
1 answer
asked
Mar 19, 2018
by
anonymous

How Do I Build a Low Power FM Radio Station?
Last Answer : How Do I Build a Low Power FM Radio Station? A low power FM radio station offers individuals or small groups the ability to go on the air and communicate with the general public using FM radio ... FCC or your local government to determine which, if any FM frequencies you are allowed to transmit on.
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8 views
1 answer
asked
May 11, 2021
by
anonymous

Compare the Nuclear power station with Hydro power station.
Last Answer : SR. No. Points Nuclear Power plant Hydro Power station 1 Site/ Location Where there is ample supply of water is available, away from thickly populated areas to avoid radioactive ... Field Application As base load Used as base load during as well as peak load
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75 views
1 answer
asked
Aug 2, 2019
by
anonymous

Classify condensers used in thermal power station. Explain each type in brief.
Last Answer : Types of condenser: Classification: 1. Jet Condenser (Mixing Type) 2. Surface condenser (non Mixing type) Explanation:- 1. Jet Condenser (Mixing Type) In Jet condenser the steam ... there in no direct contact between the steam and cooling water. This condensate is reused in boiler.
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136 views
1 answer
asked
Aug 2, 2019
by
anonymous

Explain the working of Hydro power station with schematic layout.
Last Answer : Working of Hydro- Electric Power Plant: Water stored at high level by constructing dam across river. This stored water has potential energy. This stored water is passed to run the water ... energy and Alternator is coupled to water turbine which converts mechanical energy into electrical energy.
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104 views
1 answer
asked
Aug 2, 2019
by
anonymous

"Efficiency of thermal power station is low". — Justify.
Last Answer : Justification: Efficiency of thermal power station is low":- Overall efficiency of T.P.P depends upon efficiency of boiler, turbine and alternator. The heat produced due to combustion of coal ... losses in thermal power plant is 71%, So efficiency of thermal power plant is less about 29%
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105 views
1 answer
asked
Aug 2, 2019
by
anonymous

Applications of Diesel power station
Last Answer : Applications of Diesel Power Station: 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 ... 10. Diesel plants are widely used for generating power ranging from 100 to 5,000 H.P.
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67 views
1 answer
asked
Aug 2, 2019
by
anonymous

List out main components of Diesel power station.
Last Answer : Main components of Diesel power station: 1) Diesel Engine 2) Engine Air intake system 3) Engine Fuel System 4) Engine Exhaust system 5) Engine cooling system 6) Engine Lubricating system 7) Engine Starting system 8) Diesel Engine Generator (Alternator)
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105 views
1 answer
asked
Aug 2, 2019
by
anonymous

State the function of following components of a nuclear power station: i) Moderator ii) Shielding iii) Control rod iv) Coolant
Last Answer : i) Function of Moderator :- Moderator is to moderate or reduce the speed of fast neutron to help the fission process. ii) Function of sheilding : Shielding is to protect environment, ... from reactor core and transfer it in heat exchanger for producing steam at high pressure and temperature.
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126 views
1 answer
asked
Sep 8, 2018
by
anonymous

State the types of radioactive waste generated in a nuclear power station. Explain the methods employed for their disposal.
Last Answer : Types of radioactive waste: The waste produced in nuclear power plant is in the form of solid, liquid & gases, 1. Solid Waste Disposal:- Solid wastes removed from the reactor are very ... are measured. If it is safe then released to atmosphere at high level through large height chimney.
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129 views
1 answer
asked
Sep 8, 2018
by
anonymous

"Hydro electric power station are not perennial power station". Justify.
Last Answer : Justification: The water utilized by the hydro power plants comes mostly from storage dams/reservoirs which get filled up during the monsoon rainy season. Such reservoirs are utilized for supplying ... are important. Hence "Hydro electric power stations are not perennial power station"
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89 views
1 answer
asked
Sep 8, 2018
by
anonymous

List and state any four limitations of inter connected power station.
Last Answer : Limitations of inter connected power station:- 1) Initial cost of infrastructure of transmission line increases as length increases. 2) Interconnection required more automation which increases cost on ... capacity. But in absence of surplus power merits of interconnection cannot be obtain.
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47 views
1 answer
asked
Sep 8, 2018
by
anonymous

State the functions of fuel system and exhaust system of a diesel power station.
Last Answer : Fuel system: It supplies fuel to engine for combustion purpose. It consists of Fuel Pump: - It supplies fuel to engine for combustion purpose. Strainer: - Are provided to remove suspended impurities and ... most of the noise. Chimney:- To exhaust gases in the atmosphere as high as possible.
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97 views
1 answer
asked
Sep 8, 2018
by
anonymous

State the function of cooling tower and condenser in thermal power station.
Last Answer : 1. Condenser: Function of condenser is to convert exhaust steam again into water by reducing its temperature with the help of cold water. Also it reduces back pressure of steam turbine 2 ... tower : The function of cooling tower is to reduce the temperature of water coming from condenser.
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315 views
1 answer
asked
Sep 8, 2018
by
anonymous

State the purpose of surge tank and spill way in hydroelectric power station.
Last 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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92 views
1 answer
asked
Sep 8, 2018
by
anonymous

State any four factors governing Selection of site for thermal power station.
Last Answer : Following Factors are to be considered:- 1. It should locate near coal mine. 2. Sufficient quantity of water should be available. 3. Sufficient large space should be available. 4. It should be located ... laws of the land and the town planning. 14. The interests of national defense must be served.
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187 views
2 answers
asked
Sep 7, 2018
by
anonymous

Write down any two advantages of nuclear power station.
Last Answer : Advantages of nuclear power station :- 1) Fuel required: Fuel requirment of Nuclear Power Plant is less than Thermal Power Plant. So it reduces transportation cost of fuel and space required for fuel storage ... By use of nuclear fuel.,it saves the other fossile fuels like-coal, gas, oil, etc.
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107 views
2 answers
asked
Sep 7, 2018
by
anonymous

Last Answer : For the protection of power station buildings against direct strokes the requirements are interception, conduction and dissipation.
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94 views
1 answer
asked
Mar 20, 2018
by
anonymous

Last Answer : For measurement of inductance having high value, we should use Hay's bridge.
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169 views
1 answer
asked
Mar 21, 2018
by
anonymous

Last Answer : Large capacity generators are invariably hydrogen cooled.
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95 views
1 answer
asked
Mar 20, 2018
by
anonymous

Last Answer : Generating capacity connected to the bus bars and ready to take load when switched on is known as spinning reserve.
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177 views
1 answer
asked
Mar 20, 2018
by
anonymous

Draw the block diagram of regulated power supply, explain function of each block and draw waveforms of each stage.
Last Answer : 1. A step down transformer 2. A rectifier 3. A filter 4. A regulator Operation of Regulated Power Supply:- Step Down Transformer:- A step down transformer will ... regulator. A regulator will maintain the output constant even when changes at the input or any other changes occur.
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2.0k views
3 answers
asked
May 2, 2020
by
anonymous
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What is need of regulated power supply?
Last Answer : A regulated power supply is used to ensure that the output remains constant even if the input changes. But sometimes main supply voltage, load, and surrounding temperature keep changing and altering the ... power supply is needed that will accept an AC input and give a constant DC output.
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136 views
3 answers
asked
Sep 4, 2018
by
anonymous

What is the Power Supply specification for 8085AH microprocessor? A) Single +5V supply with 10% voltage margins B) Dual +5V supply with 10% voltage margins C) Single +10V supply with 5% voltage margins D) Dual +5V supply with 5% voltage margins
Last Answer : What is the Power Supply specification for 8085AH microprocessor? A) Single +5V supply with 10% voltage margins B) Dual +5V supply with 10% voltage margins C) Single +10V supply with 5% voltage margins D) Dual +5V supply with 5% voltage margins
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258 views
1 answer
asked
Jun 18, 2018
by
anonymous

Two 100W, 200V lamps are connected in series across a 200V supply. The total power consumed by each lamp will be in Watts
Last Answer : 4800
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444 views
2 answers
asked
May 8, 2018
by
anonymous

The time period of third harmonic of power supply frequency, in milliseconds, is (A) 20 (B) 3.33 (C) 6.66 (D) 60
Last Answer : The time period of third harmonic of power supply frequency, in milliseconds, is 6.66
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540 views
1 answer
asked
Apr 28, 2018
by
anonymous

Last Answer : Overhead lines for power supply to tramcars are at a minimum height of 10 m.
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2.6k views
1 answer
asked
Mar 22, 2018
by
anonymous

Last Answer : Rectifier is use in power supply to convert Alternating current (AC) to Direct Current (DC) .
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109 views
1 answer
asked
Sep 13, 2017
by
anonymous

Last Answer : When a D.C. series motor is connected to A.C. supply, the power factor will be low because of high inductance of field and armature circuits.
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119 views
1 answer
asked
Mar 20, 2018
by
anonymous

Last Answer : The adjustment of position of shading bands, in an energy meter is done to provide friction compensation.
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199 views
1 answer
asked
Mar 21, 2018
by
anonymous
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Last Answer : The value of starting capacitor of a fractional horse power motor will be 300 uF .
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98 views
1 answer
asked
Mar 20, 2018
by
anonymous

What is the value of Beta in power BJT?
Last Answer : The beta value in power BJT is 5 to 10.
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105 views
1 answer
asked
Sep 20, 2017
by
anonymous
