What is the formula for reactive power?

Question

asked Dec 16, 2017 by anonymous

178 views

Please log in or register to answer this question.

2 Answers

← Prev Question Next Question →

Related questions

asked Aug 8, 2017 by anonymous

what are the importance of reactive power?

Last answer: Importance of Reactive Power Voltage level control is important In power system. Varying reactive power will vary voltage level. Reactive power is directly proportional to ... power for useful work. Reactive power is required to generate magnetic flux.

0 like 0 dislike

109 views 1 answer

asked Sep 6, 2018 by anonymous

Explain the term reactive power. Why it is sometimes essential to measure reactive power?

Last answer: Reactive power: The reactive power (Q) is defined as the product of voltage(V), current (I) and sine of angle between voltage(V) and current( I) Therefore Reactive power Q = V I ... power so that corrective measures can be taken accordingly to maintain systems power factor near to the unity.

0 like 0 dislike

50 views 1 answer

asked Apr 27, 2018 by anonymous

The reactive power transfer over a line mainly depends on

Last answer: The reactive power transfer over a line mainly depends on lVsl- lVRl

0 like 0 dislike

288 views 1 answer

asked Sep 6, 2018 by anonymous

List any two methods of reactive power measurement in 3 phase circuit.

Last answer: Methods of reactive power measurement in 3 phase circuit: (i) Two single phase wattmeter method (ii) One single phase wattmeter method

0 like 0 dislike

72 views 1 answer

asked Jan 1 by anonymous

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

Last 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.

0 like 0 dislike

30 views 1 answer

asked Dec 9, 2017 by Arjuna

Reactive power

reactive power is greater in load side compare to generator what will happen?

Last answer: VI*sin()

3 like 0 dislike

140 views 2 answers

asked Apr 28, 2018 by anonymous

Precise control of reactive current flow entering the transmission and distribution systems can be minimized

Precise control of reactive current flow entering the transmission and distribution systems can be minimized by using (A) synchronous condenser (B) static VAR capacitor (C) capacitor bank (D) thyristor switched reactor in parallel with capacitor

Last answer: Precise control of reactive current flow entering the transmission and distribution systems can be minimized by using (A) synchronous condenser (B) static VAR capacitor (C) capacitor bank (D) thyristor switched reactor in parallel with capacitor

0 like 0 dislike

103 views 1 answer

asked Aug 25, 2019 by anonymous

why reactive ohm cannot converted electrical energy into heat?

Last answer: Because it describes the resistance of element that store energy rather than dissipate energy as heat

0 like 0 dislike

64 views 2 answers

asked Mar 25, 2018 by anonymous

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?

Last 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.

1 like 0 dislike

325 views 1 answer

asked Dec 16, 2017 by anonymous

How does a capacitor improve power factor?

Last answer: Every circuit are usually more inductive than capacitive.it means that the current lags by voltage at small angle.hence we have to compensate this situation so we use Capacitor then this lag is compensate ... angle becomes low and the value of cos(phase angle) is increase and hence power also max.

4 like 0 dislike

131 views 1 answer

asked Aug 8, 2017 by anonymous

what is UPFC?

Last answer: UPFC stands for unified power flow controller. It's used for real time control & dynamic compensation of ac transmission system.

0 like 0 dislike

728 views 2 answers

asked Jun 11, 2019 by anonymous

Electric power formula

Last answer: Electric power formula

0 like 0 dislike

48 views 1 answer

asked Jun 18, 2018 by anonymous

What is the Power Supply specification for 8085AH microprocessor?

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

0 like 0 dislike

229 views 1 answer

asked Apr 29, 2018 by anonymous

What is the power factor when a single phase watt meter operating on 200 V and 5 A for 5 hours makes 2016

What is the power factor when a single phase watt meter operating on 200 V and 5 A for 5 hours makes 2016 revolutions and the meter constant in revolution is 420? A) 0.04 B) 1.04 C) 0.96 D) None of these

Last answer: What is the power factor when a single phase watt meter operating on 200 V and 5 A for 5 hours makes 2016 revolutions and the meter constant in revolution is 420? A) 0.04 B) 1.04 C) 0.96 D) None of these

0 like 0 dislike

135 views 1 answer

asked Mar 11, 2018 by anonymous

What is the symbol for AC power?

Last answer: If you need to measure alternating current in a circuit, different multimeters have different symbols to measure it (and the corresponding voltage), usually "ACA" and "ACV," or "A" and "V" with a squiggly line (~) next to or above them.

0 like 0 dislike

2.6k views 1 answer

asked Jul 24, 2019 by anonymous

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

Last 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.

0 like 0 dislike

2.5k views 1 answer

asked May 8, 2018 by anonymous

What would happen if a power transformer designed for operation on 50 Hz (frequency) were connected to

What would happen if a power transformer designed for operation on 50 Hz (frequency) were connected to a 500 Hz (frequency) source of the same voltage: (A) Eddy Current and Hysteresis losses will be excessive (B) Current will be too much high (C) Transformer may start to smoke and burn (D) No effect

Last answer: What would happen if a power transformer designed for operation on 50 Hz (frequency) were connected to a 500 Hz (frequency) source of the same voltage: (A) Eddy Current and Hysteresis losses will be ... will be too much high (C) Transformer may start to smoke and burn (D) No effect

0 like 0 dislike

485 views 1 answer

asked Jan 4, 2018 by anonymous

What is formula for power?

Last answer: The capacity to do work is termed as Energy. The Energy expended to do work in unit time istermed as Power. It is represented as P

2 like 0 dislike

128 views 2 answers

asked May 8, 2018 by anonymous

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

Last 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

0 like 0 dislike

56 views 1 answer

asked Apr 27, 2018 by anonymous

For a 15-bus power system with 3 voltage controlled buses, the size of Jacobian matrix is

Last answer: For a 15-bus power system with 3 voltage controlled buses, the size of Jacobian matrix is 25 x 25

0 like 0 dislike

1.8k views 1 answer

asked Mar 20, 2018 by anonymous

The condition for maximum power in case of D.C. motor is?

0 like 0 dislike

83 views 0 answers

asked Mar 20, 2018 by anonymous

For a consumer the most economical power factor is generally?

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

0 like 0 dislike

134 views 1 answer

asked Mar 20, 2018 by anonymous

The primary reason for low power factor is supply system is due to installation of?

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

0 like 0 dislike

84 views 1 answer

asked Mar 20, 2018 by anonymous

The power loss is an important factor for the design of?

Last answer: The power loss is an important factor for the design of transmission line.

0 like 0 dislike

80 views 1 answer

asked Aug 25, 2019 by anonymous

Why is AC better for long distance power transmission than DC ?

Last answer: ac is more economical to transmit for long distances . wires can be made smaller by step up transformer .. since major cost are wires to transmit .. then at the end of distance step down transformer is used for commercial use.

0 like 0 dislike

166 views 4 answers

asked Mar 22, 2018 by anonymous

Power for lighting in passanger coach, in a long distance electric train, is provided?

Last answer: Power for lighting in passanger coach, in a long distance electric train, is provided through individual generator of bogie and batteries.

0 like 0 dislike

73 views 1 answer

asked Mar 10, 2018 by anonymous

Why superposition theorem is not valid for power?

0 like 0 dislike

94 views 0 answers

asked Sep 22, 2017 by anonymous

Why MOSFET is used for low power applications?

Last answer: MOSFET have high current losses due to High on state resistance. Hence MOSFET is used for low power applications.

0 like 0 dislike

78 views 1 answer

asked May 17, 2020 by anonymous

What is the value of capacitance required to improve power factor from 0.7 to 0.9.

What is the value of capacitance required to improve power factor from 0.7 to 0.9. Given that: Real power = 50 W Vrms of the source = 120 Frequency = 50 Hz #powerfactor

0 like 0 dislike

184 views 0 answers

asked Jun 28, 2019 by anonymous

What is the unit of electric power?

Options: A) WATT B) AMPERE C) VOLTS D) OHM

Last answer: Correct Answer: A) WATT

0 like 0 dislike

61 views 1 answer

asked Sep 7, 2018 by anonymous

What is the choice of size and number of generator units in interconnected power system?

Last answer: Choice of Size and Number of Generating Units: 1. The size/rating and number of generating units in such way that they approximately match with the load curve as closely as possible. 2. In ... , if power plant is connected to grid system then generating unit of higher capacity can be installed.

0 like 0 dislike

61 views 1 answer

asked Mar 19, 2018 by anonymous

What is the maximum value of power factor?

Last answer: 1 is the maximum value of power factor.

0 like 0 dislike

79 views 1 answer

asked Mar 16, 2018 by anonymous

What is the power factor of purely resistive circuit?

What is the power factor of purely resistive circuit.

Last answer: Unity that is 1

0 like 0 dislike

169 views 2 answers

asked Mar 15, 2018 by anonymous

What is the relationship between power and resistance?

Last answer: P = I2R Where P = power I = Current R = Resistance

0 like 0 dislike

54 views 2 answers

asked Mar 15, 2018 by anonymous

What is the relationship between power and current?

Last answer: P = I2R Where P = power I = Current R = Resistance This the relationship between current and power.

0 like 0 dislike

86 views 2 answers

asked Mar 10, 2018 by anonymous

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

0 like 0 dislike

60 views 0 answers

asked Mar 10, 2018 by anonymous

What is the largest power plant in the world?

Last answer: japam

0 like 0 dislike

70 views 2 answers

asked Mar 10, 2018 by anonymous

What is the most common type of power plant?

Last answer: Hydroelectric power plant.

0 like 0 dislike

86 views 1 answer

asked Mar 10, 2018 by anonymous

What is the power generation?

0 like 0 dislike

57 views 0 answers

asked Mar 10, 2018 by anonymous

What is the power amplifier?

0 like 0 dislike

50 views 0 answers

asked Mar 10, 2018 by anonymous

What is the use of power factor correction?

0 like 0 dislike

70 views 0 answers

asked Mar 10, 2018 by anonymous

What is the best power factor?

Last answer: It is unity power factor but difficult to achieve in dynamic loads

0 like 0 dislike

75 views 1 answer

asked Mar 10, 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

0 like 0 dislike

75 views 2 answers

asked Dec 19, 2017 by anonymous

What is the meaning of the word hydroelectric power?

Last answer: Hydro means water, hydroelectric mean electricity generated from water.

0 like 0 dislike

86 views 1 answer

asked Oct 21, 2017 by anonymous

If resistance is 8 Ohm and current is 16 ampere then what will be the voltage and power?

Last answer: 128 volts ,2048 watts

3 like 0 dislike

110 views 2 answers

asked Sep 20, 2017 by anonymous

What is the unit of power?

Last answer: Unit of power is Watt denoted by capital W .

0 like 0 dislike

79 views 1 answer

asked Sep 20, 2017 by anonymous

what is the value of Beta in power BJT?

What is the value of Beta in power BJT?

Last answer: The beta value in power BJT is 5 to 10.

1 like 0 dislike

83 views 1 answer

asked Sep 22, 2018 by anonymous

Explain the “mitigation of power theft” and “faulty meter replacement” for energy conservation techniques to reduce commercial losses.

Last answer: Energy conservation techniques to reduce commercial losses: 1. Mitigation of Power Theft: Power theft being the most important issue which all of the service providing utilities ... agricultural sector. Prepaid meters may prove effective measures against unauthorized abstraction of energy.

0 like 0 dislike

67 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.

0 like 0 dislike

90 views 1 answer

asked Sep 8, 2018 by anonymous

Explain the procedure for disposal of nuclear power plant.

Last answer: Disposal of nuclear waste: The waste products by nuclear fission may be solid, liquid or gas. i) Solid harmful disposals are packaged as required and shipped to a burial site for disposal. ii) Liquids ... and tested. If the required limits are met, these will be released to atmosphere.

0 like 0 dislike

40 views 1 answer

anonymous · Answer 1 · 2018-01-19T04:41:35+0000

Reactive power is denoted by letter "Q".

Q = I²X

The unit of reactive power is Volt-Ampere-reactive (VAR).

anonymous · Answer 2 · 2018-08-08T08:43:39+0000

The formula for reactive power is,

Reactive power = VI sin (phi)

The unit of reactive power is VAR ( Volt ampere reactive). The reactive power is denoted by 'Q'.

The formula for real power is,

Real power = VI cos (phi)

The unit of real power is watts. The real power is denoted by 'P'.

What is the formula for reactive power?

Please log in or register to add a comment.

Please log in or register to answer this question.

2 Answers

Please log in or register to add a comment.

Please log in or register to add a comment.

Related questions