Explanation Given data: Consider that the balanced three-phase source supplies 60 kVA at 0.6 lagging to 2 balanced Y-connected parallel loads. Hence, the each phase supplies the power of 20 kVA. Load 1 is purely resistive load that absorbs 30 kW. Therefore, each phase absorbs 10 kW power. The line voltage of load 2 is 120 3 V . Calculation: Consider the value of power factor. cos θ = 0.6 θ = cos − 1 ( 0.6 ) θ = 53.13 ° Consider the expression for the complex power of the source per phase. S s = ( 20 kVA ) ∠ θ Substitute 53.13 ° for θ . S s = ( 20 kVA ) ∠ 53.13 ° = 20 , 000 ∠ 53.13 ° VA = 12,000 + j 16,000 VA Consider that the source complex power per phase should equal to the sum of the per-phase complex powers of two loads. S s = S 1 + S 2 Substitute 12,000 + j 16,000 VA for S s . S 1 + S 2 = 12,000 + j 16,000 VA Substitute 10,000 VA for S 1 . 10 , 000 + S 2 = 12,000 + j 16,000 VA S 2 = 2 , 000 + j 16 , 000 VA Write the expression for the per-phase complex power of load 2. S 2 = | V rms | 2 Z 2 ∗ (1) Consider the expression for the rms voltage of load 2

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ISBN: 9780133760033

Author: James W. Nilsson, Susan Riedel

Publisher: PEARSON

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Single Phase AC Circuit

Alternating Current (AC) is a type of electric power in which the electric current changes, both in magnitude and direction, at regular intervals. This AC Circuits can deliver power in either a Single Phase system or a Three Phase system.

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Chapter 11, Problem 24P

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Calculate the per-phase impedance of the load 2.

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Chapter 11, Problem 23P

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Chapter 11 Solutions

Electric Circuits (10th Edition)

Ch. 11.3 - The voltage from A to N in a balanced three-phase...Ch. 11.3 - Prob. 2AP Ch. 11.4 - Prob. 4AP Ch. 11.4 - Prob. 5AP Ch. 11.4 - Prob. 6AP Ch. 11.4 - Prob. 7AP Ch. 11.5 - Prob. 8AP Ch. 11.5 - Prob. 9AP Ch. 11 - Prob. 1P Ch. 11 - Prob. 3P

Ch. 11 - Prob. 4P Ch. 11 - Repeat Problem 11.4 but assume that the...Ch. 11 - Prob. 6P Ch. 11 - Find I0 in the circuit in Fig. P11.7. Find...Ch. 11 - Find the rms value of Io in the unbalanced...Ch. 11 - The time-domain expressions for three...Ch. 11 - Prob. 10P Ch. 11 - The magnitude of the line voltage at the terminals...Ch. 11 - A balanced Δ-connected load has an impedance of...Ch. 11 - A balanced, three-phase circuit is characterized...Ch. 11 - Prob. 15P Ch. 11 - In a balanced three-phase system, the source is a...Ch. 11 - Prob. 17P Ch. 11 - The impedance Z in the balanced three-phase...Ch. 11 - For the circuit shown in Fig. P11.20, find the...Ch. 11 - A balanced three-phase Δ-connected source is shown...Ch. 11 - Prob. 22P Ch. 11 - Fine the rms magnitude and the phase angle of ICA...Ch. 11 - Prob. 24P Ch. 11 - Prob. 25P Ch. 11 - The line-to-neutral voltage at the terminals of...Ch. 11 - Prob. 27P Ch. 11 - Prob. 28P Ch. 11 - Prob. 29P Ch. 11 - Calculate the complex power in each phase of the...Ch. 11 - Prob. 31P Ch. 11 - Prob. 32P Ch. 11 - Prob. 33P Ch. 11 - Prob. 34P Ch. 11 - Prob. 35P Ch. 11 - Three balanced three-phase loads are connected in...Ch. 11 - Prob. 37P Ch. 11 - Prob. 38P Ch. 11 - Prob. 40P Ch. 11 - Prob. 41P Ch. 11 - Prob. 42P Ch. 11 - Prob. 43P Ch. 11 - Prob. 44P Ch. 11 - Prob. 45P Ch. 11 - Prob. 46P Ch. 11 - Prob. 47P Ch. 11 - Prob. 48P Ch. 11 - Prob. 49P Ch. 11 - Prob. 50P Ch. 11 - Prob. 51P Ch. 11 - Find the reading of each wattmeter in the circuit...Ch. 11 - Prob. 53P Ch. 11 - Prob. 54P Ch. 11 - Prob. 55P Ch. 11 - Prob. 56P Ch. 11 - Prob. 57P Ch. 11 - Prob. 58P Ch. 11 - Prob. 59P Ch. 11 - Assume in Problem 11.59 that when the load drops...

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What is the Difference Between Single Phase and Three Phase???; Author: Electrician U;https://www.youtube.com/watch?v=FEydcr4wJw0;License: Standard Youtube License