A. Answer 5 TEST YOURSELF1. The load taken from a supply consists of (a) lamp load 10 kW a unity power factor (b) motorload of 80 kVA at 0.8 power factor lagging and (c) motor load of 40 kVA at 0.7 power factorleading. Calculate the total load taken from the supply in kW and in kVA and the power factorof the combined load.2. A 3.73 kW, 1-phase, 200-V motor runs at an efficiency of 75% with a power factor of 0.7lagging. Find (a) the real input power (b) the kVA taken (c) the reactive power and (d) thecurrent.3. An inductive circuit draws 10 A and 1 kW from a 200-V, 50 Hz a.c. supply. Determine: (i) theimpedance in Cartesian from (a + jb) (ii) the impedance in polar from Z Z 0 (iii) the powerfactor (iv) the reactive power (v) the apparent power.4. A resistance of 20 ohms, inductance of 0.2 H and capacitance of 150 µF are connected in seriesand are fed by a 230 V, 50 Hz supply. Find X₁, Xc, Z, Y, p.f., active power and reactive power.5. Given v = 200 sin 377t V and i = 8 sin (377t-30°) A for an ac circuit. Determine (a) the powerfactor, (b) true power, (c) apparent power, and (d) reactive power.

Answered: Image /qna-images/answer/5c72b2b2-1892-4bef-a29d-3f19a5bb97fc.jpg

Answered: 5. Given v = 200 sin 377t V and i = 8…

5. Given v = 200 sin 377t V and i = 8 sin (377t-30°) A for an ac circuit. Determine (a) the power factor, (b) true power, (c) apparent power, and (d) reactive power.

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter2: Fundamentals

Section: Chapter Questions

Problem 2.10P: For the circuit element of Problem 2.3, calculate (a) the instantaneous power absorbed, (b) the real...

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