600/0° V 600/-120° V 600/+120° V +1

Q: A single phase power system is defined as follows; A 25KVA 5000°V generator is connected to a low…

A: Dear student as per our guidelines we are supposed to solve only one question in which it should be…

Q: A simple power system is shown in this Fig. The generator (480 V, 10 kVA) is connected to an ideal…

A: In this question we need to find a reactive power consumed by the load in per unit

Q: Three non-inductive resistances, each of 100 Q, are connected in star to a three- phase,…

A: Note: Active power consumed by inductor is zero

Q: (Volt) v(t) K(Volt).-.- M(Volt). .. K (Volt) (Amper) i„(t) C(Amper) (eaniye) 1801 CLAmper) (saniye)…

A: From given graph we will find expression for voltage and current through the thyristor. power…

Q: 6. A string of four suspension insulators is connected across a 285 kV line. The self-capacitance of…

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Q: Three identical coils are connected in star to a 200 V (line voltage), 3-phase, A.C. supply and each…

A: The solution is given below

Q: A three phase, 60 Hz transmission line delivers 20 MW to a load at 66 kV at 80% pf lagging. The…

A: A three phase, 60 Hz transmission line delivers 20 MW to a load at 66 kV at 80% pf lagging. The…

Q: A 3-phase, 50 Hz, 440 V motor develops 100 H.P, which works for 3000 hours per annum, the power…

A: Given f=50 Hz Motor output =100 HP=74.6 kW efficiency =93 % pf1=0.75 lag pf2=0.95 lag

Q: I Review I Constants Consider the circuit shown in (Figure 1). Suppose that vg = 170 cos 10, 000t V,…

A: MAXIMUM POWER TRANSFER THEOREM: In any linear bilateral 2-terminal network consists of linear…

Q: Considering line losses electricity will be conducted 120 km far away with an aliminumcable.…

A: GIVEN:- length of the cable-120km resistivity(ρ)-35 mohm .mm2 current density(J)-1.1 A/mm2 Cosϕ=0.97…

Q: H. W.: A 3-phase overhead transmission line is being supported by three disc insulators. The…

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Q: . A three-phase overhead transmission line is being supported by three-disc suspension insulators;…

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Q: mer (1:20), a transmission line (R=20 Ohm and X=60 Ohm), step down phm and X=10 Ohm) the base values…

A: To find the p.u impedance one need to find the base impedance for that part. To find the p.u…

Q: A 60 hz voltage of 220 volts from a convenience outlet is impressed on a capacitance of 800 pF.…

A: Choose the correct options If 60Hz , 220V  and capacitor C= 800pF Find the effective voltage and…

Q: Question 1: A240-V rms 60-Hz source supplies a parallel combination of a 5-kW heater and a 30-kVA…

A: In this some load is given...For power factor improvement ,capacitor is connected...We have to find…

Q: e is 0.3Ω / km. calculate the efficiency and regulation of the line for 0.8 lagging power factor.

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Q: A three-phase overhead transmission line is being supported by three-disc suspension insulators; the…

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Q: For a Power System, following data are given: Bus Data Voltage Magnitude in pu MW |1.03|20° Bus No…

A: A single-line diagram, sometimes known as a one-line diagram, is a simplified notation for…

Q: 13. The figure below shows part of a power system consisting of a generator, two transformers and a…

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Q: A 1000 KVA, 400V three-phase electrical plant operates at a power factor of 0.6 lagging. It is…

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Q: 1 20 love In 30a Estufa Jo Refrigerado 1 20Le v (5 mH

A: In the given circuit,

Q: 2. Two 220-V, 1-phase electrical furnaces take loads of 350 kW and 500 kW respectively at a power…

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Q: A 3-phase star connected alternator supplies a delta connected load, each phase of which has a…

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Q: 1. Three equal impedances each having a resistance of 14 omh and inductance of 32 mH are connected…

A: Given, a star connected system having Resistance, R = 14 ohm Inductance, L = 32 mH Frequency, f = 50…

Q: the frequency             (1) the phase angle, in degrees,             (1) the power factor of the…

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

Q: A balanced, three-wire, delta-connected, three-phase load has a phase voltage of 400 V, a line…

A: Given, A balanced three wire delta connected three phase load has, Phase voltage, Vph=400 V. Line…

Q: 5- A textile plant is supplied with 3-phase, 38 VII 50 Hz source. The loads of the plant are; Number…

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Q: The watthourmeter is an example of integrating instrument. The meter is connected with 22.5A, 230V…

A: Given that  V=230 voltI=22.5 Apf=0.6 t= 1 hrN per unit =137  Calculate energy measured by watthour…

Q: A single phase 50 Hz generator supplies an inductive load of 6500 kW at a lagging power factor of…

A: Given data: Recieving end voltage = 17.5 kV Load power factor = 0.85 output real power = 6500 kW…

Q: The circuit shown below is derived from a balanced Y-Y three phase circuit. Load 2 draws 8 kW at 0.8…

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Q: O A Library office is fitted with four units of 20W Compact Fluorescent Lamp (CFL) downlights and…

A: First calculate active and reactive powers of the individual loads.  Total active power is sum of…

Q: QUA/ For the three bus power system shown in Fig.(2). all the per unit reactances of its elements…

A: As the fault is symmetrical, only positive sequence impedance diagram is enough to draw the fault…

Q: A single phase 11 kV line with a length of 15 km is to transmit 500 kVA. The inductive reactance of…

A: Given,The length is 15 km.The inductive reactance is,

Q: Calculate the new per unit reactance of M2. Generator G: 15 MVA, 13.8 kV, X = 0.15 p.u. Motor M1: 5…

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Q: For the circuit shown, if Van = 120<0 Vrms. Then the reading of the wattmeter W1 is..W. * In…

A: In this question ,  Find the reading of the wattmeter W1.

Q: 7. Two wattmeters are connected to measure the input to a 400 V: 3-phase, connected motor outputting…

A: Given Data: V = 400 V motor output = 24.4 kW pf = 0.4 lag Efficiency = 80%

Q: Activity 2: According to Ohm's low, the current (I) through an impedance (Z) is related to the…

A: We will use basic  current formula and reactive power formula to calculate Q .

Q: Given: Gen 1 1500 KVA, 3Phase , 2.3 KV, 4 Poles No load speed= 1830 rpm Speed @ 1500 Kw =…

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Q: A string of four suspension insulators is connected across a 285 kV line. The self-capacitance of…

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Q: 1. Three loads are connected in parallel across a single-phase source voltage of 240 V (RMS). Load 1…

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Q: Three-phase, 50 Hz, 132 KV power system of equivalent impedance 10+j35 12 with load 110+j29 12.…

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Q: 3. Assume that the two loads are supplied by 840V 60 hz line. Load A is a wye connected with 30 +…

A: The solution is given below

Q: 201 j60 N 480 20° V

A: The transformer is a static device that steps up or steps down the voltage depending upon the turn…

Q: 1. Three non-inductive resistances, each of 100 Q, are connected in star to a three- phase,…

A: Wattmeter will indicate only real power. Power indicated by each wattmeter is the real power of each…

Q: A string of four suspension insulators is connected across a 285 kV line. The self-capasjtance of…

A:

Q: A series circuit of two pure elements has the following applied voltages and resulting currents of…

A: Note :- As per guidelines we are instructed to solve only first 3 sub-parts of a question.  So I…

Q: Assignment(1) The single line diagram of a three phase power system is shown in Fig.(2). The motor…

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Q: alternating single phase circuit describes the instantaneous values of the applied voltage and the…

A: In this question we will find impedance , resistance , reactance , power etc... Note:- due to…

Q: A 3-Phase,3 Wire secondary distribution system with balanced per phase loads at a,b and c feeding…

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Power Measurement

According to Blondel's theorem, the total power is measured with one less number of wattmeters than the number of wires present in the system. So, a single-phase and two-wire system will require one wattmeter and a single-phase and the three-wire system will require two wattmeters, and a three-phase and the three-wire system will also require two wattmeters and a three-phase and the four-wire system will require three wattmeter devices. The wattmeter is a device that measures power using one voltage and one current input as shown in the above figure. Multiple current or voltage input pair cables are used by many power analyzers and digital storage oscilloscopes (DSOs) for measuring watts, in effect within a single instrument acting as multiple wattmeters. It is possible to measure three-phase and four-wire power with one correctly specified power analyzer.