For a 220 V, 60 Hz single phase voltage controller is used for controlling flow of power in to a circuit consisting load of X=122, and R= 52. Which of the following represents the correct value of the maximum power and power factor? (a) Pmax=9.68 kW, p.f = 0.6 (b) Pmax= 3.72 kW, p.f = 0.6 (c) Pmax=9.38 kW, p.f=0.38 (d) Pmax=1.43 kW, p.f = 0.38
For a 220 V, 60 Hz single phase voltage controller is used for controlling flow of power in to a circuit consisting load of X=122, and R= 52. Which of the following represents the correct value of the maximum power and power factor? (a) Pmax=9.68 kW, p.f = 0.6 (b) Pmax= 3.72 kW, p.f = 0.6 (c) Pmax=9.38 kW, p.f=0.38 (d) Pmax=1.43 kW, p.f = 0.38
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A three phase synchronous motor has a terminal voltage of 460v,and terminal current of 120A at a power factor of 0.95 lagging, synchronous reactance of 1.68 ohm and the field current is 47 A.
Transcribed Image Text:For a 220 V, 60 Hz single phase voltage controller is used for controlling flow of power
in to a circuit consisting load of X=122, and R= 52. Which of the following
represents the correct value of the maximum power and power factor?
(a) Pmax=9.68 kW, p.f = 0.6
(b) Pmax= 3.72 kW, p.f = 0.6
(c) Pmax=9.38 kW, p.f = 0.38
(d) Pmax=1.43 kW, p.f = 0.38
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