PART B:- AC CIRCUIT ANALYSIS The loads, connected in parallel, taken from a 230 V, f= 50 Hz AC supply consists of Load 1: a heating load of 15 kW Load 2: a motor load of 40 kVA at 0.6 power factor lagging Load 3: a load of 20 kW at 0.8 power factor lagging If each load has a separate switch resulting in the following operating conditions I. load 1 OFF, load 2 OFF, Load 3 OFF II. load 1 OFF, load 2 OFF, Load 3 ON III, load 1 OFF, load 2 ON, Load 3 OFF IV. load 1 OFF, load 2 ON, Load 3 ON V. load 1 ON, load 2 OFF, Load 3 OFF VI, load 1 ON, load 2 OFF, Load 3 ON VII. load 1 ON, load 2 ON, Load 3 OFF VIII. load 1 ON, load 2 ON, Load 3 ON For each condition, determine a) draw the circuit diagram. b) the combined loading and the overall power factor. c) the supply and load currents. Draw the phasor diagram. d) the capacitor current, capacitance, KVAr rating of the capacitor bank to correct the power factor to unity. Draw the circuit diagram and phasor diagram. Show the circuit diagram of how you would implement the system with the capacitors and load switches.

PART B:- AC CIRCUIT ANALYSIS The loads, connected in parallel, taken from a 230 V, f= 50 Hz AC supply consists of Load 1: a heating load of 15 kW Load 2: a motor load of 40 kVA at 0.6 power factor lagging Load 3: a load of 20 kW at 0.8 power factor lagging If each load has a separate switch resulting in the following operating conditions I. load 1 OFF, load 2 OFF, Load 3 OFF II. load 1 OFF, load 2 OFF, Load 3 ON III, load 1 OFF, load 2 ON, Load 3 OFF IV. load 1 OFF, load 2 ON, Load 3 ON V. load 1 ON, load 2 OFF, Load 3 OFF VI, load 1 ON, load 2 OFF, Load 3 ON VII. load 1 ON, load 2 ON, Load 3 OFF VIII. load 1 ON, load 2 ON, Load 3 ON For each condition, determine a) draw the circuit diagram. b) the combined loading and the overall power factor. c) the supply and load currents. Draw the phasor diagram. d) the capacitor current, capacitance, KVAr rating of the capacitor bank to correct the power factor to unity. Draw the circuit diagram and phasor diagram. Show the circuit diagram of how you would implement the system with the capacitors and load switches.

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

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.33P: Consider the three single-phase two-winding transformers shown in Figure 3.37. The high-voltage...

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