Question 7 (a) Select all that apply The equation for instantaneous power is as follows: p(t) = ½ VmImcos(0,₁– 0;) + ½ Vmlmcos(2wt + 0, + 0;) Identify the features of the expression for instantaneous power. (b) The instantaneous power has two parts. The first part is independent of time. The second part is a sinusoidal function whose frequency is 3w. The value of the first part depends on the phase difference between the voltage and the current. Consider a load R₁ attached to a circuit that can be represented by its Thevenin's equivalent RTH. Identify the condition when the power delivered by the power- supplying resistive network to the load is maximum. RL = RTH RL = (RTH)² RL = RTH/2 RL=√ RTH

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 2.27P: An industrial load consisting of a bank of induction motors consumes 50 kW at a power factor of 0.8...
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Question 7
(a)
Select all that apply
The equation for instantaneous power is as follows:
p(t) = ¹ Vmlmcos(0,— 0;) + ½ VmImcos(2wt + 0, + 0;)
Identify the features of the expression for instantaneous power.
(b)
The instantaneous power has two parts.
The first part is independent of time.
The second part is a sinusoidal function whose frequency is 3w.
The value of the first part depends on the phase difference between the voltage
and the current.
Consider a load R₁ attached to a circuit that can be represented by its Thevenin's
equivalent RTH. Identify the condition when the power delivered by the power-
supplying resistive network to the load is maximum.
RL = RTH
RL= (RTH)²
RL = RTH/2
RL =√ RTH
Transcribed Image Text:Question 7 (a) Select all that apply The equation for instantaneous power is as follows: p(t) = ¹ Vmlmcos(0,— 0;) + ½ VmImcos(2wt + 0, + 0;) Identify the features of the expression for instantaneous power. (b) The instantaneous power has two parts. The first part is independent of time. The second part is a sinusoidal function whose frequency is 3w. The value of the first part depends on the phase difference between the voltage and the current. Consider a load R₁ attached to a circuit that can be represented by its Thevenin's equivalent RTH. Identify the condition when the power delivered by the power- supplying resistive network to the load is maximum. RL = RTH RL= (RTH)² RL = RTH/2 RL =√ RTH
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