The minimum number of wattmeter(s) required for measuring power of 3-phase unbalanced load is

Q: In the two-wattmeter method of measuring 3-phase power, the wattmeters indicate equal and opposite…

A:

Q: In 3 phase power measurement using two wattmeter method, the readings of two wattmeter's are…

A: In this question we need to find a what is the value of phase angle when both wattmeter reading are…

Q: The ratings of a 3-phase circuit breaker are 1000 A. 500 MVA, 66 kV, 3 seconds. Then find (1) Rated…

A:

Q: Calculate the line and phase voltage.

A: In this question,  3 phase star connected source supplied to the three phase unbalanced load.  Find…

Q: A 3-phase transmission line operating at 33 kV and having a resistance of 5 Ω and reactance of 20 Ω…

A: A 3-phase transmission line operating at 33 kV and having a resistance of 5 Ω and reactance of 20 Ω…

Q: Which of the following statement is incorrect for two wattmeter method to measure power? a. It…

A: In two wattmeter method, the current coils of the wattmeter are connected with any two lines.

Q: Total power of the three-phase balanced star connected system is the sum of the power consumed by…

A: The power consumed by single phase load is given by: P1-ϕ=Vph.Iph.cosϕ.....(1)

Q: The algebraic sum of the three voltages in a three phase system is always equal to zero.  True…

A: Brief description: Here in the above given question they are discussing about three phase systems.…

Q: The most common system for .secondary distribution is 3-phase, . . wire system. *

A: There are two types of distribution is present, primary distribution and secondary distribution.

Q: -What are the reasons for using three phase system to generat and distribute electrical power.

A: In three-phase distribution, phase current is distributed in the phase of 120 degree due to which…

Q: Three 10:1 transformers are connected delta to wye for stepping up the 2300-vilt three phase source.…

A:

Q: In a 3-phase balanced star connected system, the least number of wattmeter essential to measure the…

A: in balanced system , total power = 3* power in single phase so total power in balanced three phase…

Q: A 3-phase transmission line operating at 33 kV and having a resistance of 5 Ω and reactance of 20 Ω…

A: A 3-phase transmission line operating at 33 kV and having a resistance of 5 Ω and reactance of 20…

Q: A three phase alternator 50 MVA, 11KV, exposure to types of faults are fallowing: Balanced…

A: In Three phase fault,  fault current = no load voltage/ X1. In line to line fault ,  Fault current =…

Q: From figure below, , if 3 phase bolted fault occurs at point 2. Calculate i) Rating of CB's ii) Volt…

A:

Q: what is the value of phase  current in  a balanced star connected system a. is equal to line…

A: As we knows that in In balanced delta or start circuits, the line voltage is equal to phase voltage,…

Q: Calculate "terminal" phase voltage of phases "a" and "c" of generator. Calculate Vab and Vca across…

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Q: 2. Draw the reactance diagram for the power system shown in Figure 2. Neglect the resistance and use…

A:

Q: 3-phase supply system,

A: Three phase system- The system which has three phases, i.e., the current will pass through the three…

Q: ) In three phase star connected system the Y phase voltage is measured between _____________   a.…

A:

Q: In 3-phase system, if the three loads were identical in every way, then the currents flowing in the…

A: Given For three phase system the three loads are identical every where Means load is same every…

Q: Explain in details the relation between phase and line voltages and currents in a star- connected…

A: Circuit diagram for star connected network is given by, Here N is the neutral point R is red phase…

Q: two-wattmeter method is

A: Wattmeter- Measuring device used to measure power. It is consists of two coils, one is potential…

Q: A three-phase generator provides 3.6 kVA with a 0.85 (delayed) power factor. If first released 2,500…

A: we need to calculate losses in the generator.

Q: Explain in detail the relation between phase and line voltages and currents in a star connected…

A:

Q: 5) Explain two wattmeter method for balanced load.

A:

Q: For the system shown in Figure 3.34, draw an impedance diagram in per unit by choosing 100 kVA to be…

A: Base power =Sbase=100KVAbase voltage =Vbase=2400 Vzbase=V2baseSbaseZbase=24002100*103=57.6 ohmValue…

Q: The minimum number of wattmeter (s) required to measure 3-phase, 3-wire balanced or unbalanced power…

A:

Q: In two wattmeter method of 3-phase power measurement, one meter indicates reading when the phase…

A: In two wattmeter method, Total power is given by, PT = P1 + P2 Where  P1 and P2 are powers from each…

Q: Three phase power consumed by a three-phase unbalanced load can be measured by using two watt…

A: Yes three phase power consumed by a three-phase unbalanced load can be measured by using two watt…

Q: In balanced and unbalanced 3-phase power measurement, the minimum number(s) of wattmeter required to…

A: The balanced star means the value of the current in all phases are same

Q: In two wattmeter method, if the load power factor is equal to 0.5, then W1 indicates the total power…

A: PF =0.5

Q: The ratings of a 3-phase circuit breaker are 1000 A. 500 MVA, 66 kV, 3 seconds. Then find (1) Rated…

A:

Q: Single phase Power delivered Per phase voltage Current flowing through the transmission line

A: Disclaimer:  Since you have asked multipart questions, we will solve the first three subpart for…

Q: In single phase overhead transmission lines, the increase of the line resistance leads to an…

A: To solve the above problem one should have a clear understanding of phasor quantities: In a…

Q: In two wattmeter method of 3-phase power measurement, the readings of one of the wattmeter is…

A: Two wattmeter method of 3-phase power measurement.

Q: 1. Define three phase power measurement using one wattmeter. 2. five (5) methods / types of three…

A: It is asked to define three phase power measurement using one wattmeter. Also we need to explain…

Q: 45. Three 10:1 transformers are connected A-Y for stepping up the 2,300-volt three- phase source.…

A: The solution is given below .

Q: A 415V TPN busbar rising main chipped to a surface is to provide a 240V supply to each of 8…

A: Answer - Following is the circuit arrangement showing how each flat must be connected to the rising…

Q: Describe an unbalanced or asymmetrical of three-phase electrical system. i) State two (2) effects of…

A: The explanation is as follows.

Q: difference betwwen substation and transmission.

A: A high-voltage electric system facility is known as a substation. It is used to switch equipment,…

Q: In two wattmeter method of 3-phase power measurement, the readings of reading of any one of the…

A: The power factor in two wattmeter method is given by the formula :

Q: In 3-phase star connected system, the voltage available between any pair of terminals is called

A: We know that ,         In three phase star connection            The line current which is equal to…

Q: In a two-wattmeter method of measuring power in a balanced 3 phase circuit, the Wattmeters indicate…

A: Given: In a two wattmeter method, the wattmeter indicate equal and opposite reading. W1=W.W2=-W.

Q: In 3 phase power measurement using two wattmeter method , the readings of any one of the wattmeter…

A:

Q: In 3 phase power measurement using two wattmeter method , the readings of two wattmeter's are…

A: two wattmeter method,  wattmeter readings are W1 = line voltage(Vl)×line current ×cos(30+∅)…

Q: In 3 phase power measurement using two wattmeter method, the readings of two wattmeter's are…

A: Let W1 and W2 be the Readings of two watt meters. Reading W1=VL×IL×cos30+ϕ  Reading W2…

Fault Analysis

In an electrical engineering system, a fault is an abnormal electric current flowing through the system, and fault analysis is the study of these faults. For instance, a short-circuit is a fault where the live wire touches the ground or neutral wire. If a circuit is interrupted by a failure of a current-carrying wire then an open circuit fault occurs. The open-circuit faults are also called series faults. One or more phases or ground may be involved in a three-phase fault or may occur only between two phases. Current flows into the earth in case of a ground fault or earth fault. For most situations, the prospective short circuit current of a fault that is predictable can be calculated. To limit the loss of service because of a failure, the protective devices can detect fault conditions and operate circuit breakers and also other devices. All phases equally can be affected in a poly-phase system which is known as symmetric electrical fault. The asymmetric fault becomes more complicated to analyze if only some phases are affected. By using methods such as symmetrical components, the power system analysis of these types of faults is often simplified. The main objective of power system protection is to design, detect, and interrupt power system faults.