Q2: Select the right answer for the following: 1- the equivalent resistance of the circuit given in fig.1 between A and B, is --- . (A). (В) 5 (C) 1 (D)15 20 Fig.1 D
Q2: Select the right answer for the following: 1- the equivalent resistance of the circuit given in fig.1 between A and B, is --- . (A). (В) 5 (C) 1 (D)15 20 Fig.1 D
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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KVL and KCL
KVL stands for Kirchhoff voltage law. KVL states that the total voltage drops around the loop in any closed electric circuit is equal to the sum of total voltage drop in the same closed loop.
Sign Convention
Science and technology incorporate some ideas and techniques of their own to understand a system skilfully and easily. These techniques are called conventions. For example: Sign conventions of mirrors are used to understand the phenomenon of reflection and refraction in an easier way.
Question
Transcribed Image Text:Q2: Select the right answer for the following:
1- the equivalent resistance of the circuit given in fig.1 between A and B, is --- .
E
(A)
(В) 5
(C) 1
(D)15
42
Fig.1
D.
2- A heater takes a current of 8 A from a 230 V source for 12 h. Calculate the energy
consumed in kilowatt hours.
(A) 220 kw.h
(B) 2.2 kw.h
(C) 22 kw.h
(D) 2 kw.h
3- For the series circuit in Fig. 2. Determine V2 using
Kirchhoff's voltage law.
(A) 21 V (B) 2.1 V
V3 = 15 V
(C) -21 V
(D) 45 V
R3
E
- 54 V
R1
Fig.2
V, = 18 V
4- An alternating voltage has the equation v = 141.4 sin 377t; what are the values of:
(i) r.m.s. voltage; (ii) frequency; (iii) the instantaneous voltage when t= 3 ms?
(r. m. s. = 10 V
(r. m. s. = 90 V
A){ f = 50 Hz
vi = 127.8 V
f = 50 Hz
vi = 127.8 V
B)
(r. m. s. = 90 V
(r. m. s. = 100 V
C) { f = 60 Hz
vi = 127.8 V
f = 60 Hz
vi = 127.8 V
D)
5- For the air-core coil in Fig. 3: Find the inductance.
I=25.4mm
Air core (4)
(A )15.68 μΗ Β) 20 μΗ (C) 10 μΗ (D ) 1.5 μΗ
d =6.35mm
Fig.3
100 turns
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