QI. Power and Power Factor Correction A factory has the following five major loads: Load 1: A motor rated at 4 Hp,0.85 pf lagging ( 1 hp = 0.7457kW) Load 2: A heater rated 3 kW at unity power factor Load 3: A synchronous motor rated at 3kVar, 0.85 pf leading Load 4: Thirtyty - 100-W lightbulbs Load 5: A motor rated 2.5 Hp at 0.85 pf leading a) Calculate the total real, reactive and apparent power. b) Find the overall power factor. c) the Kvar rating and capacitance required to improve the power factor to unity. d.) the current drawn from the supply under the new power factor conditions.

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QI. Power and Power Factor Correction
A factory has the following five major loads:
Load 1: A motor rated at 4 Hp,0.85 pf lagging ( 1 hp = 0.7457kW)
Load 2: A heater rated 3 kW at unity power factor
Load 3: A synchronous motor rated at 3kVar, 0.85 pf leading
Load 4: Thirtyty - 100-W lightbulbs
Load 5: A motor rated 2.5 Hp at 0.85 pf leading
a) Calculate the total real, reactive and apparent power.
b) Find the overall power factor.
c) the Kvar rating and capacitance required to improve the power
factor to unity.
d.) the current drawn from the supply under the new power factor
conditions.
Transcribed Image Text:QI. Power and Power Factor Correction A factory has the following five major loads: Load 1: A motor rated at 4 Hp,0.85 pf lagging ( 1 hp = 0.7457kW) Load 2: A heater rated 3 kW at unity power factor Load 3: A synchronous motor rated at 3kVar, 0.85 pf leading Load 4: Thirtyty - 100-W lightbulbs Load 5: A motor rated 2.5 Hp at 0.85 pf leading a) Calculate the total real, reactive and apparent power. b) Find the overall power factor. c) the Kvar rating and capacitance required to improve the power factor to unity. d.) the current drawn from the supply under the new power factor conditions.
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