Engineering
Electrical Engineering
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) E (B) 5 (C) 1 (D)15 Fig.1 D. F 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 R, Fig.2 V = 18 V

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) E (B) 5 (C) 1 (D)15 Fig.1 D. F 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 R, Fig.2 V = 18 V

Introductory Circuit Analysis (13th Edition)
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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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
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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