Electric Motor Control
10th Edition
ISBN: 9781305177611
Author: Herman
Publisher: Cengage
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Chapter 1, Problem 10SQ
To determine
Choose the correct option which does not represent a protective feature of a motor controller.
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In the circuit shown, let R₁=7, R₂=12, R3=24, R4-2, V₁ =26, V2=104, and V3-78, to calculate the
power delivered (or absorbed) by the circuit inside the box, as follows:
{NOTE: On Multiple Choice Questions, like this problem, you have only one attempt }
1. The current I is equal to (choose the closed values in amperes)
O 1.156
-1.156
-1.209
-4.622
1.209
0
(A)
4.622
2. The power delivered (or absorbed) (choose the closest value in watts) (W)
-873.292
152.225
O 873.292
-122.181
-58.086
0
O 122.181
R₁
ww
V₂
R₂
R3
V1
ww
R4
√3
For the circuit shown, find the currents 11, 12, 16 and 17, given 13 =1 A, 14-19 A, 15 =-10 A, and Ig =5 A.
=
(A)
12
=
(A)
16 =
(A)
175
(A)
(Based on Alexander Textbook, Chapter2)
I5
12
14
18
13
16
• Round your values to 3-significant digits.
In the circuit shown, let R₁=62, R2=39, R3=16, R4-7 and V5-194, to calculate Vo and lo, as follows:
V₁
R1
R3
Find the overall current i delivered by the voltage source Vs:
• Find the voltage Vo:
• Find the current l₁ :
The relative tolerance for this problem is 7 %.
(V)
(A)
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R₂
+
RA
(A)
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