The reactive power transfer over a line mainly depends on

1 Answer

Answer :

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

Related questions

Description : 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.

Description : 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

Description : What is the formula for reactive power?

Last Answer : 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'.

Description : 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.

Description : A lightening arrester connected between the line and earth in a power system  (1) protects the terminal equipment against travelling surges (2) protects the transmission line against direct ... suppresses high frequency oscillations in the line (4) reflects back the travelling wave approaching it

Last Answer : A lightening arrester connected between the line and earth in a power system protects the terminal equipment against travelling surges

Last Answer : The inductive interference between power and communication line can be minimized by transposition of the power line, transposition of the communication line.

Description : Maximum Power Transfer Theorem 1

Last Answer : Maximum Power Transfer Theorem 1

Description : State maximum power transfer theorem for DC circuit.

Last Answer : Maximum power transfer theorem for DC circuit: The maximum power transfer theorem states that the source or a network transfers maximum power to load only when the load resistance is equal ... removed (disconnected) ii) All internal independent sources are replaced by their internal resistances.

Description : _______ electric power is the most common method used by electrical grids to transfer power.  (A) One-phase (B) Two-phase (C) Three-phase (D) None of the above

Last Answer : Three-phase electric power is the most common method used by electrical grids to transfer power. 

Description : For maximum transfer of power, internal resistance of the source should be?

Last Answer : For maximum transfer of power, internal resistance of the source should be equal to load resistance.

Description : 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.

Description : Is the power line voltage available in our homes a dc or an ac voltage?

Last Answer : The power line voltage available in our homes is AC. Mobile dwellings are the most commonly DC-supplied homes and even then they tend to include AC supply for heavier loads.

Description : For a 500 Hz frequency excitation, a 50 km long power line will be modeled as

Last Answer : For a 500 Hz frequency excitation, a 50 km long power line will be modeled as long line

Description : Pure inductive circuit takes power from the A.C. line when?

Last Answer : It takes power when voltage decreases and current increases.

Description : What is a high tension power line?

Last Answer : High tension power line is a high voltage of 115 kv and power line is underground transimissio used by urbun areas

Description : 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

Description : 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

Description : The surge impedance for over head line is taken as  (1) 10-20 ohms (2) 50-60 ohms (3) 100-200 ohms (4) 1000-2000 ohms

Last Answer : The surge impedance for over head line is taken as 100-200 ohms

Description : lf a travelling-wave travelling along a loss-less overhead line does not result in any reflection after it has reached the far end, then the far end of the line is

Last Answer : lf a travelling-wave travelling along a loss-less overhead line does not result in any reflection after it has reached the far end, then the far end of the line is terminated into a resistance equal to surge impedance of the line

Description : Transmission efficiency of a transmission line increases with the

Last Answer : Transmission efficiency of a transmission line increases with the increase in power factor and voltage

Last Answer : Reactance relay is preferred for phase fault on short transmission line.

Last Answer : Impedance relays are used for phase faults on long line.

Last Answer : When a wave propagates on a transmission line, it suffers reflection several times at sending and other end.

Last Answer : The interaction between a transmission line and communication line is minimized by transposing transmission as well as communication lines, increasing the height of the transmission line tower, increasing the distance between the two lines.

Last Answer : When a transmission line is energized, the wave that propagates on it is current wave and voltage wave.

Last Answer : A transmission line is protected by distance protection, time graded and current graded overcurrent protection.

Description : For high efficiency of transfer of power, internal resistance of the source should be?

Last Answer : For high efficiency of transfer of power, internal resistance of the source should be less than the load resistance.

Description : Mention The Steps In The Interrupt Driven Mode Of Data Transfer.?

Last Answer : Answer :The steps followed in this type of transfer are as follows: The peripheral device would request for an interrupt. The request acknowledgement for the transfer is issued at the end of ... coordinates by the ISS. Again the Interrupt system is enabled and the above steps are repeated.

Description : How to Write a Job Transfer Request ?

Last Answer : How to Write a Job Transfer Request No matter which type of industry you are in, there may come a point in your career when you would not want to settle for the current position that you have at ... push that your boss needs to finally take notice of the work that you have been doing in the past.

Description : Heat Transfer Software

Last Answer : The process of heat transfer is used in many industries - the scientific industry, engineering industry and every industry you can possibly think of that uses thermal heat. Because of this, there is a need ... group, so you won't have to go through the hassle of copying information down for others.

Description : Heat Transfer Machines

Last Answer : Heat transfer machines are just the thing you need in order to do heat transfers on your clothing or whatever surface you want to decorate. In order for you to stick designs and precious stones on porous and ... is best. This will also give you an idea of what kind of designs you can choose from.

Description : Heat Transfer Experiments

Last Answer : Heat transfer experiments are basically experiments that deal with temperature, its characteristics and qualities. Heat transfer experiments are done for many purposes, but mainly to do investigations on the ... three are learned, it helps to have a better understanding of heat transfers as well.

Description : Fuel Transfer Pumps

Last Answer : A fuel transfer pump is used to move fuel from one container to another. These pumps are used to fuel cars, planes, agricultural equipment and other devices. They are typically used to transfer diesel and ... for quicker fueling. These models may cost more, but they will make your job a lot easier.

Description : How to transfer an apartment to a non-residential fund?

Last Answer : Can a private entrepreneur use his apartment as an office? The answer to this question depends on the type of activity. To sew, write poetry, fill out accounting documents, engage in tutoring, write ... is unacceptable. If you are not satisfied with this decision, you can appeal it in court.

Description : Calculate the rate of heat transfer by radiation from an unlagged steam pipe, 50 mm o.d. at 393K to air at 293K emissivity e = 0.9.

Last Answer : Rate of heat transfer by radiation Assume length of pipe = 1 m

Description : Give the unit of overall heat transfer coefficient in SI and MKS.

Last Answer : Unit of overall heat transfer coefficient 1. In SI : W/m2K 2. In MKS : kcal/hr m2K

Description : Define film heat transfer coefficient.

Last Answer : Film heat transfer coefficient: Film heat transfer coefficient h is defined as the quantity of heat transferred in unit time through unit area at a temperature difference of 10 between the surface and surrounding.

Description : Define steady state heat transfer.

Last Answer : Steady state heat transfer: Heat transfer where temperature remains same with respect to time and the rate of heat transfer does not vary with time.

Description : Transfer switch

Last Answer : .embed-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; } .embed-container iframe, .embed-container object, .embed-container embed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }

Description : A transfer function has a second order denominator and constant gain in the numerator

Last Answer : A transfer function has a second order denominator and constant gain in the numerator the system has two zeros at infinity

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

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

Description : With the knowledge of the state variable representation of a plant the transfer function of the plant 

Last Answer : With the knowledge of the state variable representation of a plant the transfer function of the plant can be determined completely

Description : Explain data transfer mechanism in I2C protocol. Compare it with CAN and USB protocol based on bit rate and area of applications.

Last Answer : I2C (Inter-Integrated Circuit): I2C stands for Inter-Integrated Circuit. I2C is a serial protocol. It was developed by Philips Semiconductor. I2C bus have two communication lines. One is serial data ( ... Mbps this is used for lower speed devices. Using USB we can connect upto 127 devices.

Description : For a short transmission line with r/x ratio of is 1.0, the regulation will be zero when the load power factor is

Last Answer : For a short transmission line with r/x ratio of is 1.0, the regulation will be zero when the load power factor is 0.707 lead

Description : For the women: Does a mans chin and jaw line effect whether he's more attractive?

Last Answer : I like a nice strong chin but it’s not a deal-breaker by any means.

Description : How to Spool Line Onto a Reel

Last Answer : How to Spool Line Onto a Reel If you think of fishing as a sport or a hobby, you must always make sure that you have efficient fishing tools with you all the time. Your fishing rod must ... you'll always have good quality fishing line and an efficient fishing reel to use during your fishing trips.

Description : How to Replace Edge Trimmer Line

Last Answer : How to Replace Edge Trimmer Line An edge trimmer line is a very efficient equipment for any avid gardener. This small diameter line, usually made of plastic or other material, cuts various vegetation, ... your edge trimmer lines regularly. It'll save you time and give you a great-looking landcaping.

Description : How to Repair a Brake Line

Last Answer : How to Repair a Brake Line Vehicles that often travel to colder, up-north states often have their brake lines damaged, because of the salt that melts the ice on the roads. The salt corrodes the car' ... should be done as soon as possible. Otherwise, you might end up in worst brake problems later on.

Description : State the limitations of EHVAC transmission line. 

Last Answer : Following are the Limitations of EHVAC Transmission:   1. Insulation cost increases as voltage increases 2. Skin effect is more 3. Proximity effect is more. 4. Corona loss increases. 5. Radio ... 18. EHVAC is economical only for bulk amount of power is to be transmitted over long distance. 

Description : List the properties of line insulators in brief

Last Answer : Following are the properties of line insulators:  A) Electrical Properties of insulating material:- 1. It should have high resistance. 2. It should have high breakdown voltage. 3. It should have high ... of insulating material:- 1. It should have longer life. 2. It should have low cost