Engineering Electromagnetics
9th Edition
ISBN: 9781260029963
Author: Hayt
Publisher: MCG
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Question
Chapter 6, Problem 6.42P
To determine
The resistance between the two perfect conductors.
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EEE 316-Electr...chines | PQ..pdf
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4th September, 2023.
INSTRUCTIONS:
Answer FIVE (5) QUESTIONS,
DURATION: 3 HOURS
QUESTION ONE:
1a)
What is electromechanical energy conversion.
(3 Mark:
1b)
Explain the following terms: permanent magnets and non-permanent magnets
(5 Mark:
1c)
A short shunt generator delivers 45A at 240V and the resistance of the shunt field and armature:
500 and 0.030 respectively. Calculated the generated emf.
(6 Marks
QUESTION TWO:
2a)
2b)
Energy can never be created or destroyed", discuss with examples
Why is the air-gap very important in electromechanical systems.
(4 Marks
(4 Marks,
2c)
A short shunt generator delivers 450A at 240V and the resistance of the shunt field and armature
are 500 and 0.030 respectively. Calculated the generated emf.
(6Marks)
QUESTION THREE:
3a)
3b)
List and explain the two types of armature windings mostly used in DC machines.
Differentiate between electromechanical devices and machines with examples.…
2.
For the circuit shown, V = -10 V, R. = 10 kQ, R
Calculate the operating point for the circuit shown. Use /,
= 2.2 kQ, R = 3.6 kQ, R = 1 kQ.
//ẞ and calculate /. for ẞ = 90.
R1
m
R2
22
Rc
C
Vec
RE
HE
Pls show neat and whole solution
Chapter 6 Solutions
Engineering Electromagnetics
Ch. 6 - Prob. 6.1PCh. 6 - Let S = 100 mm2. d= 3 mm, and er = 12 for a...Ch. 6 - Capacitors tend to be more expensive as their...Ch. 6 - Prob. 6.4PCh. 6 - Prob. 6.5PCh. 6 - A parallel-plane capacitor is made using two...Ch. 6 - For the capacitor of Problem 6.6, consider the...Ch. 6 - Prob. 6.8PCh. 6 - Prob. 6.9PCh. 6 - A coaxial cable has conductor dimensions of a =...
Ch. 6 - Prob. 6.11PCh. 6 - (a) Determine the capacitance of an isolated...Ch. 6 - With reference to Figure 6.5, let b=6m, h=15m, and...Ch. 6 - Two=16 copper conductor (1.29 mm diameter) are...Ch. 6 - Prob. 6.15PCh. 6 - Prob. 6.16PCh. 6 - Construct a curvilinear-square map for a coaxial...Ch. 6 - Prob. 6.18PCh. 6 - Construct a curvilinear- square map of the...Ch. 6 - Prob. 6.20PCh. 6 - The inner conductor of the transmission line shown...Ch. 6 - Prob. 6.22PCh. 6 - Prob. 6.23PCh. 6 - A potential field in free space is given in...Ch. 6 - A capacitor is formed from concentric spherical...Ch. 6 - Given the spherical symmetric field in free space,...Ch. 6 - Let V=z(x,y)=4e2xf(x)3y2 in a region of free space...Ch. 6 - Show that in a homogeneous medium of conductivity...Ch. 6 - What total charge must be located within a unit...Ch. 6 - Prob. 6.30PCh. 6 - For the parallel-plate capacitor shown in Figure...Ch. 6 - Prob. 6.32PCh. 6 - The functions V1 (p, , z) and V2(p, , z) both...Ch. 6 - Prob. 6.34PCh. 6 - Prob. 6.35PCh. 6 - Prob. 6.36PCh. 6 - Prob. 6.37PCh. 6 - Prob. 6.38PCh. 6 - Prob. 6.39PCh. 6 - Prob. 6.40PCh. 6 - Prob. 6.41PCh. 6 - Prob. 6.42PCh. 6 - Prob. 6.43PCh. 6 - Prob. 6.44PCh. 6 - Prob. 6.45PCh. 6 - By appropriate solution of Laplaces and Poissons...
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- Pls show neat and whole solutionarrow_forwardA. A dc chopper with a free-wheeling diode feeds a dc motor with an armature inductance of 15 mH and resistance of 12. The dc source voltage is 200 V. The ON time and OFF time are 2 ms and 0.5 ms respectively. Determine the armature current when the back Emf of the motor is 155 V. Also draw the power circuitry.arrow_forwardAn inductive load is controlled by an impulse commutation chopper in Fig.1 and peak load current IL-450A at a supply voltage of 220V. The chopping frequency f=275 Hz, commutation capacitor C=60μF and reversing inductance Lm=20μH.The source inductance Ls 8μH, determine: td tc tr=tc+td a) peak Capacitor discharge Current. b) Circuit turn off time. c) Commutation time. d) The maximum instantaneous capacitor voltage. Vects = Vs+ IL LS sin ust Ls 000002 a C T₁ IL T₂ FWD ic oooooL L D₁ fig1 LOAD Vo Iarrow_forward
- An inductive load is controlled by an impulse commutation chopper in Fig.1 and peak load current IL-450A at a supply voltage of 220V. The chopping frequency f=275 Hz, commutation capacitor C=60μF and reversing inductance Lm=20μH.The source inductance Ls=8μH, determine : td tc tr=tc+td a) peak Capacitor discharge Current. b) Circuit turn off time. c) Commutation time. d) The maximum instantaneous capacitor voltage. Vects = Vs+ ILLS Ls 000002 a C ic T₁ iTI IL T₂ FWD LOAD Vo oooooL L D₁ fig1 Iarrow_forwardA. A dc chopper with a free-wheeling diode feeds a dc motor with an armature inductance of 15 mH and resistance of 10. The dc source voltage is 200 V. The ON time and OFF time are 2 ms and 0.5 ms respectively. Determine the armature current when the back Emf of the motor is 155 V. Also draw the power circuitry. 100arrow_forward1. For the circuit shown, VBB = +10 V, Vcc = +30 V, RB = 470 kQ, Rc = 6 kQ. Calculate the operating point for the circuit shown for a ẞ value of 90 and for a ẞ value of 130. VBB RB w Rc Vccarrow_forward
- The circuit in the figure below has been left for a long time. Determine the current i.arrow_forwardDraw and explain the electronic circuit diagram of ON/OFF controller. Write its advantagesand disadvantages.arrow_forwardThe expected value of the vyoltage across a resistor is 545 V However, measurement yields avalue o 500 V. Calculate: a) Absolute error b) Percentage error c) Absolute accuracy d) Relative accuracy.arrow_forward
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