# Active power and apparent power are represented by?

Active power and apparent power are represented by?

Active power and apparent power are represented by kW and kVA.

## Related questions

Description : The apparent power drawn by an A.C. circuit is 10 kVA and active power is 8 kW. The reactive power in the circuit is?

Answer : The apparent power drawn by an A.C. circuit is 10 kVA and active power is 8 kW. The reactive power in the circuit is 6 kVAR.

Description : The ratio of active power to apparent power is known as____ factor.

Answer : The ratio of active power to apparent power is known as power factor.

Description : The product of apparent power and cosine of the phase angle between circuit voltage and current is?

Answer : In parllpar reasonans RLC circuit the current is

Description : In voltage source converter based HVDC transmission system the active power is controlled by changing (A) phase angle of the converter ac input voltage (B) supply frequency of the converter ac input voltage (C) magnitude of the converter ac input voltage (D) DC voltage at the inverter terminals

Answer : In voltage source converter based HVDC transmission system the active power is controlled by changing phase angle of the converter ac input voltage

Description : Use Voltmeter, ammeter, wattmeter to determine active, reactive and apparent power consumed in given R-L series circuit, draw phasor diagram.

Answer : Practical Significance In the industry environment Electrical Engineering diploma graduate are expected to measure basic parameters like voltage, frequency, time period etc. for R-L series circuits. Therefore ... /varying L. 7. Draw the phasor diagram for each of reading for verification.

Description : What do you mean by active filter? State its advantages over passive filter . Define pass band & stop band with respect to filter.

Answer : Active Filter: Active Filter is formed by using active element along with the passive components.  Advantages of Active filter over Passive filter: High value of pass band gain can be obtained. It is ... pass band.  Stop Band Filter: The frequency range which is attenuated is known as stop band.

Description : Define active circuit and passive circuit.

Answer : Active circuit: Active Circuit is one which contains at least one source of e.m.f. or energy, is called active circuit.  Passive Circuit: Passive Circuit is one which does not contain any source of e.m.f. or energy in it, is called passive circuit.

Description : Differentiate between active and passive transducers

Answer : Active Transducer:- A transducer which do not requires external energy source to convert signal from one form to another. Active transducers passes gain. e.g. Thermometer,Thermocuople, bourdon tubes, ... other form. Passive transducer passes loss. e.g. Thermistor, strain gauges, LVDT etc .

Description : What is active and passive network?

Answer : Active network is a network which contain one or more than one EMF source. An active network consists of an active element like battery or transistor. Passive network is a ... contain any source of energy. Passive network consists of passive element like resistance, inductance and capacitance.

Description : Write example of each type (i) Primary transducer (ii) Active transducer (iii) Electrical transducer (iv) Digital transducer

Answer : (i) Active transducer:-Thermocouple, piezoelectric, photovoltaic cell (ii) Primary transducer:- Bourdon tube, bellows, (iii) Electrical transducer.:- LVDT,RVDT, Hall effect, strain gauge, ... , optical pyrometer, radiation pyrometer (iv) Digital transducer:- Linear Encoder, digital taco generator

Description : Define following networks (i) Active (ii) Passive (iii) Unilateral (iv) Bilateral.

Answer : An element capable of giving out power or energy to some external device is called an active element. e.g. battery, generator etc. An element which is not an active element and capable of ... : A network consisting of only passive elements i.e. no active element, is called passive network.

Answer : BJT control the flow of electron so it is a active device.

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

Description : How much electricity is produced by a power plant?

Description : Generally in a power system network, the load is represented as a :  (A) Constant power in both load flow study and in stability study  (B) Constant power in load flow study and constant ... impedance in load flow study  (D) Constant impedance in both load flow study and in stability study

Answer : Generally in a power system network, the load is represented as a : Constant power in load flow study and constant impedance in stability study

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.

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.

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

Description : What are the types of power generation?

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.

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.

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

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

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.

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

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

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.

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.

Description : In a thermal power plant, ash is collected in

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

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%

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

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.

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

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

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

Answer : By  use  of  thermocouple.

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.

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

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

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

Answer : Load factor of a power station is generally less than unity.

Description : Can a synchronous condenser improve power factor?

Answer : Yes, synchronous condenser can improve power factor.

Description : What is the maximum value of power factor?

Answer : 1 is the maximum value of power factor.

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

Description : What is the largest power plant in the world?

Description : How many watts does a power plant produce?

Description : What is the most common type of power plant?