R4 S2 S1 iT R5 R6 +HE + RIZ ic2 C3 VT C2: C1 V1 R2 SR3
Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
10th Edition
ISBN:9781337399128
Author:Russell E. Smith
Publisher:Russell E. Smith
Chapter17: Commercial And Industrial Air-conditioning Control Systems
Section: Chapter Questions
Problem 22RQ
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Question
- All capacitors were initially discharged.
- at t = 0, S1 is placed at position 1 and S2 is closed.
- At t = 15 ms, S1 is placed at position 2 and S2 is kept closed. During this phase, it has been determined that the total resistance seen by the equivalent capacitor is 28 kΩ; and that vT = 10 V at t = 15 ms. Calculate the value of the current iT immediately after the switching occurred. Enter your answer in mA rounded to 2 decimal places.
- At t = 25 ms, S1 is kept at position 2 and S2 is opened.
Data:
- R1 = 6.5 kΩ, R2 = 10 kΩ, R3 = 1.0 kΩ, R4 = 4 kΩ, R5 = 20 kΩ, R6 = 11.5 kΩ;
- C1 = 4.5 µF, C2 = 4.0 µF, C3 = 12 µF
Transcribed Image Text:R4
S2
(2)
S1
iT
R5
R6
+
R1
C3
ic2
VT
C2
C1
V1
R2
+
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