The current in an AC circuit at any time t seconds is given by: i = 100 sin (100rt + 55°) amperes. Find: (a) The peak value, the periodic time, the frequency and phase angle relative to 120 sin 100t. (b) The value of the current when t = 0. (c) the value of the current when t =4 ms. (d) the time when the current first reaches 90 A; and (e) The time when the current is first a maximum.

Delmar's Standard Textbook Of Electricity
7th Edition
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Stephen L. Herman
Chapter17: Resistive-inductive Series Circuits
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Problem 2PP: Assume that the voltage drop across the resistor, ER, is 78 V, that the voltage drop across the...
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The current in an AC circuit at any time t seconds is given by:
i = 100 sin (100rt + 55°) amperes.
Find:
(a) The peak value, the periodic time, the frequency and phase angle relative to 120 sin 100nt.
(b) The value of the current when t = 0.
(c) the value of the current when t =4 ms.
(d) the time when the current first reaches 90 A; and
(e) The time when the current is first a maximum.
Transcribed Image Text:The current in an AC circuit at any time t seconds is given by: i = 100 sin (100rt + 55°) amperes. Find: (a) The peak value, the periodic time, the frequency and phase angle relative to 120 sin 100nt. (b) The value of the current when t = 0. (c) the value of the current when t =4 ms. (d) the time when the current first reaches 90 A; and (e) The time when the current is first a maximum.
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