= 10 + j8 Q per phase as shown in Figure below. Determine the value of IAC What is the value of IbB? a A 230/120° + 230/0° ь в C 230-120°
Q: A voltage and current applied to a single phase load is v= 195 sin (300t+35°) and i= 175 sin (250t-…
A: Since frequency are different so Net real power will be zero in single and 3 phase system.
Q: 33. The sequence components of phase A current are: Zero sequence current = 0.47+ Positive sequence…
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Q: Choose correct answer : In delta connection, the phase currents lags the line currents by A) 60° B)…
A: Correct answer is 30° In the delta connection Phase current lags the line current by 30° Angle…
Q: Decompose the following non-minimum phase system into a minimum phase system and an all-pass system.…
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Q: On a three phase system with voltages greater than 600V the typical color used to designate phase…
A: ORANGE COLOR
Q: Three phase star connected system has I = 1040, I = 104270 c=154135 determine the Symmetrical…
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Q: Problem 1 [5+5] Find the phase difference between these two. Also mention which one is leading. I =…
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Q: A delta connetion has a voltage of 560V connected to it. How much voltage is dropped across each…
A: Write the given value of the line voltage in the delta connection.
Q: 4- If the magnitude of voltage is v= 10sin(wt+100) and the current is i=5sin(wt+150), so the phase…
A: We need to find phase between voltage and current .
Q: A voltage and current applied to a single phase load is v= 26 cos (300t+25°) and i= 12 cos (250t-…
A: Voltage and current signals are given Find the active power and reactive power ?
Q: In star connection, the phase voltages lags the line voltages by О 30° O 120° O 240° О 60°
A: We will draw the phasor diagram to find angle between phase voltage and line voltage.
Q: A 3-phase star connected to a synchronous generator's open circuit voltage and short circuit current…
A: We Know That Synchronous Impendance = Open circuit voltage per phaseShort circuit current
Q: 2. If a 40-0 R is in series with a 30-N Xc across a 100 V sine wave ac source, calculate: a)…
A: As per our policy I have to do the first three only. Given data, R = 40 Ω. XC = 30 Ω. V = 100 V.
Q: A voltage and current applied to a single phase load is v= 26 cos (300t+25°) and i= 12 cos (250t-…
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Q: KEE - Sept. 2002 68. The phase currents of a three-phase system are: A= 100 cis 0°A Ig= 80 cis 240°…
A: The solution is given below
Q: The sequence component of phase a current are: Zero sequence current = 0.47 + j1.49…
A: Given,The sequence component of phase a current are as follows,Zero sequence current = 0.47 + j1.49…
Q: A balanced star connected load of (20- jl5)n per phase is connected in parallel with a balanced…
A: In this question we need to find a magnitude of phase current in red p
Q: "If Va is equal to 302angle;-40 and Vab is 523.079/350, the phase sequence is:" POSITIVE O NEGATIVE
A: For positive sequence in star connection, Line voltage leads phase voltage by 30 degrees. For…
Q: Let v1 = a + jb and v2 = c +jd, then v1 + v2 = (a+c) +j(b+d) only if a) v1 and v2 have the same…
A: Given v1=a+jb, v2=c+jd then v1+v2=(a+c)+j(b+d) this thing will happen when v1 and v2 have same…
Q: The single phase AC sinusoidal current i=/2 I sin(wt+ 0) then the peak value of the current is Ims O…
A: Given: i=2I sin(wt+θ)i=Imsin(wt+θ) Im = peak currentPeak current =2I Option D
Q: Which cannot be said since Z is an inductive load in the circuit given below? A) load voltage period…
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Q: 0.3m 25mm 6m 6m Phase A Phase B Phase C
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Q: The sequence components of phase a current are: zero sequence= 0.47 + j1.49 positive sequence= 18.4…
A:
Q: Assignment 02. A 3-p System has the phase voltage Van=200<00; A balanced Delta Load with Z=10+7i in…
A: In a delta connected source or load, the total line voltage is equal to phase voltage. Line current…
Q: lof runs on a 50HZ per phase are 0.12 que at 4 % slip (ii) .m, 1333r.p.m]
A: It is given that: P=4f=50HzR2=0.1ΩX2=0.9Ωk=0.67s=4%s=0.04VL=200 V
Q: "If Ibc is equal to 659.9112271 and la is 381 angle;1, the phase sequence is:" O POSITIVE O NEGATIVE
A: Phase sequence :The order in which each phase attain a positive peak is called phase sequence.…
Q: A balanced Delta-connected system consists of a phase voltage of 320V RMS and a load of 10068'.…
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Q: A voltage and current applied to a single phase load is v= 26 cos (300t+35) and i= 19 cos (250t-…
A: Given: v=25cos300t+35°i=19cos250t-20°
Q: "If Ibc is equal to 646.0552109 and la is 373angle;19, the phase sequence is:" O POSITIVE O NEGATIVE
A: We need to find sequence of given system
Q: A voltage and current applied to a single phase load is v= 27 cos (300t+20°) and i= 17 cos (250t-…
A: Voltage and current signals are given Find the active power and reactive power of the system.
Q: For the circuit shown below, Find wi&wz 2 draw thu Phase sequence when t VA = (10v.
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Q: A voltage and current applied to a single phase load is v= 25 sin (300t+30) and i= 18 sin (250t-…
A: According to question we have to find, Phase angle, active power, reactive power.
Q: The sequence component of phase a currents are: I ao = 0 A; I a1 = 10 + j5: I a2 =8 – j5. Determine…
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Q: Calculate the maximum value of the resultant e.m.f. and its phase relative to e.m.f. eA
A: Given, eA=50 sin wf⇒eA=502<0° ⇒eA=35.35<0° voltseB=80…
Q: In a three-phase system phase shift between phases is 30°. Select one: O True O False
A: In this question, Choose the correct option. The given Statment In a three phase system phase…
Q: "If Ibc is equal to 663.3752106 and la is 383angle;16,the phase sequence is:" O POSITIVE O NEGATIVE
A: Phase sequence is a order in which phase voltage are placed in a three phase network.
Q: A voltage and current applied to a single phase load is v= 285 sin (300t+20°) and i= 185 sin (250t-…
A: Given data:…
Q: Let v1 = a + jb and v2 = c +jd, then v1 + v2 = (a+c) +j(b+d) only if Oa) v1 and v2 phasors are…
A: Let V1 is the response of the signal with w1 frequency. And V2 is the response of the signal with w2…
Q: 5. A single phase AC distributor supplies two ingle phase loads as shown. What is the oltage drop…
A: Voltage drop between point A to C. ∆VAC ? Voltage drop = IZ Z= impedance I current
Q: 1. The line current in the a-phase. OB) Oc) OD) OA) 1.86+j1.16 1.86- 0.07- 0.07+j2.2 E)None j1.16…
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Q: Three Impedances each of (7 – j28)Ω are connected in mesh across a three-phase 415V ac supply. draw…
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Q: A voltage and current applied to a single phase load is v= 25 sin (300t+35°) and i= 12 sin (250t-…
A: Consider the given data: v=25 sin (300t+35) i= 12 sin (250t- 20)
Q: In star connection, the phase voltages lags the line voltages by O 240° О 30° O 120° О 60°
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Q: If the circuit has lagging power factor, then it is called as circuit. O Capacitive O Inductive…
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Q: What is the in phase component of 3*rect(t/10)*cos(300*pi*t + pi/2)?
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Q: 1. A phase difference of 900 degrees would more often be spoken of as choices: a. out of phase by…
A: 1) 900 degrees= 720 + 180 = 2x360 + 180 For 3600 one revolution gets…
Q: 0.4 + j0.60 0.2 + 10.30 20040 0. 9pf teading 15040 0 Spf lagging Figure On the single-phase…
A: Since you have posted the multiple questions so we are supposed to answer 1st one.
Q: The reference for phase measurement is the a. positive imaginary axis O b. positive real axis O c.…
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Q: a) A three-phase system has a rms phase voltage of 6.3 kV. What is the line voltage?
A: Given, A three phase system has RMS phase voltage, Vph=6.3 kV
Q: phase sequence, determine: a) Va'b' b) Va"b" a 0.5 + j1.5 N 0.8 + j2N b' b" 0.5 + j1.5 N 0.8 + j2 N…
A:
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- The instantaneous power absorbed by the load in a single-phase ac circuit, for a general R LC load under sinusoidal-steady-state excitation. is (a) Nonzero constant (b) Zero (c) Containing double-frequency components)Two complex loads Z1 and Z2 are connected in parallel and powered by a value voltage effective 7.2 kV and frequency 60 Hz. The first load has a power of 50 kVA and a factor of rear power of 0.9. The second charge has a power of 45 kW and a rear power factorof 0.91. Determine in steady state the kVAR power and the capacity required to correct the Total power factor to a value of 0.97 rear.Three load units A, B and C are connected in parallel and take currents that are respectively 12, 10 and 15 amperes. Assuming IA to be the reference phasor, IB leads IA by 30°, and IC lags IA by 65°, calculate the total current and the angle it makes with the reference.
- A three-phase alternator generating unbalanced voltages is connected to an unbalanced load through a 3-phase transmission line as shown in figure. The neutral of the alternator and the star point of the load are solidly grounded. The phase voltages of the alternator are Ea = 1020°, Eb = 102-90°, Ec = 10/120⁰ E E E The positive sequence component of the load current is (A) 1.3102-107⁰ A (B) 0.332Z –120° A (C) 0.9962-120° A (D) 3.5104-81⁰ A +) + j1.002 0000 j1.002 0000 j1.0Ω vovo j1.0Ω 0000 j2.002 voor j3.002 ooooA load has a leading power factor. a) Is it a capacitive or inductive load? b) Is the reactive power positive or negative? c) Repeat for a load with lagging power factorX₂=0.1 1 XL +03 Soto X₁ = 0.2 X = 0.1 X = 0.1 Above is the one-line diagram of a simple power system. Each generator is represented by an emf behind the subtransient reactance. All impedances are expressed in per unit on a common base. All resistances and shunt capacitance are neglected. The generators are operating on no load at their rated voltage with their emfs in phase. A symmetrical fault occurs at bus 1 through a fault impedance Z, =j0.08 per unit. a) Using Thevenin's Theorem, determine the impedance to the point of fault and the fault current in per unit. b) Find the bus voltages and line currents during the fault. 2 O oto
- If the load is connected to the generator thgrough an inductive line and the voltage at the load side is the same as the voltage at the terminals of the generator, which of the following must be true? O A. The reactive power is flowing from the generator to the load and from load to the generator at the same time. O B. The load is disconnected, and no power is delivered to the load. O C. The load has a poor power factor and it's absorbing too much reactive power. O D. None of the other choices are correct O E. The generator is unable to produce reactive power; therefore, the reactive power is flowing from the load to the generator.H* 3G zain IQ Asiacell The generator convert from PV to PQ if the active power of the generator exceed the * maxinum and minimum limits between the maximum and mimium limit equal to the load power Non of them With base voltage of 450 kV. The actual voltage of the generator is 560 kV. The magnitude voltage in the parameter of the PV generator in the nepaln software is * O 1.2444 pu O 450 kV O 124.44 % O 0.8036 pu 80.36 % Non of themGiven the following phase currents: Ia= 3.5+j3.5; Ib=-j3; and Ic+-2.6+j1.5. Determine the negative sequence current for phase A. A. 0.313+j0.678 B. -0.313 -j0.678 C. -0.313+j0.678 D. 0.313-j0.678
- Sum of scattering angles in Laboratory coordinate system is always equal to * O 2n None of them О п/2Suppose you have a three-phase generator that provides 120 Vac per phase and works at a frequency of 60 Hz, this generator can be connected in both delta and star. Also consider the following 6 load impedances, which will be connected at the same time to the generator as follows: ZA, ZB and Zc are connected in star, while Zp, Zg and Zp are connected in delta. j20 j3n Za j20 ZA j30 j3n -j20 j 30 -j20 Zo -j20 ZE j30 -j2n j 3n. ZF Assume the generator is star-connected with neutral, calculate total system power, total power factor, and current in neutral.The regulation of an alternator is likely to be negative in case of resistive load O True O False