Electric machinery fundamentals
5th Edition
ISBN: 9780073529547
Author: Chapman, Stephen J.
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Textbook Question
Chapter 2, Problem 2.17Q
What happens to a transformer when it is first connected to a power line? Can anything be done to mitigate this problem?
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64) answer just two from three the following terms:
A) Design ADC using the successive method if the Vmax=(3) volt, Vmin=(-2) volt, demonstrate the
designing system for vin-1.2 volt.
Successive Approximation ADC
Input Voltage-1.1 V
-4-3.5-3 -2.5 -2 -1.5 +1 -0.5
0 0.5 1 1.5 2 2.5 3
3.5
1
T
-8 -7 -6 -5
-3
+2 -1
0 1 2
3
4
5 6
7
X=1???
1st guess: -0.25 V
(too high)
X=11??
2nd guess: -2.25 V
(too low)
3rd guess: -1.25 V
(too low)
X=1110
X=111?
4th guess: -0.75 V
(too high)
Make successive guesses and
use a comparator to tell
whether your guess is too high
or too low.
Each guess determines one bit
of the answer and cuts the
number of remaining
possibilities in half.
Datacommunıcatıonin a commuinaction ASYNCHRONOUS TRANSMİTİON is used in this transmistion 7-bit chatacter will be transfered even parity will be used ,stop element is as 1,5 bits a)=select a chracter yourself and dısplay the signal transfered in this transmission , and calculate the overhead in this transmision
(i)
Find the inverse z-transform of the system H(z) =
for the following regions of
convergence. Write in the final answer for each case in the allocated rectangular box
below
(a) |z| 3
(c) 1
Chapter 2 Solutions
Electric machinery fundamentals
Ch. 2 - Is the turns ratio of a transformer the same as...Ch. 2 - Why does the magnetization current impose an upper...Ch. 2 - What components compose the excitation current of...Ch. 2 - What is the leakage flux in a transformer? Why is...Ch. 2 - List and describe the types of losses that occur...Ch. 2 - Why does the power factor of a load affect the...Ch. 2 - Why does the short-circuit test essentially show...Ch. 2 - Why does the open-circuit test essentially show...Ch. 2 - How does the per-unit system of measurement...Ch. 2 - Why can autotransformers handle more power than...
Ch. 2 - What are transformer taps? Why are they used?Ch. 2 - What are the problems associated with the Y—Y...Ch. 2 - What is a TCUL transformer?Ch. 2 - How can three-phase transformation be accomplished...Ch. 2 - Prob. 2.15QCh. 2 - Can a 60-Hz transformer be operated on a 50-Hz...Ch. 2 - What happens to a transformer when it is first...Ch. 2 - What is a potential transform? How is it used?Ch. 2 - What is a current transformer? How is it used?Ch. 2 - A distribution transformer is rated at 18 kVA,...Ch. 2 - Why does one hear a hum when standing near a large...Ch. 2 - A 100-kVA, 8000/277-V distribution transformer has...Ch. 2 - A single-phase power system is shown in Figure...Ch. 2 - Consider a simple power system consisting of an...Ch. 2 - The secondary winding of a real transformer has a...Ch. 2 - When travelers from the USA and Canada visit...Ch. 2 - A 1000-VA, 230/115-V transformer has been tested...Ch. 2 - A 30-kVA, 8000/230-V distribution transformer has...Ch. 2 - A 150-MVA, 15/200-kV, single-phase power...Ch. 2 - A 5000-kVA, 230/13.8-kV, single-phase power...Ch. 2 - A three-phase transformer bank is to handle 500...Ch. 2 - A 100-MVA, 230/115-kV, Y three-phase power...Ch. 2 - Three 20-kVA, 24,000/277-V distribution...Ch. 2 - A 14,000/480-V, three-phase, Y-connected...Ch. 2 - A 13.8-kV, single-phase generator supplies power...Ch. 2 - An autotransformer is used to connect a 12.6-kV...Ch. 2 - Prove the following statement: If a transformer...Ch. 2 - A 10-kVA, 480/120-V conventional transformer is to...Ch. 2 - A 10-kVA, 480/120-V conventional transformer is to...Ch. 2 - Two phases of a 14.4-kV, three-phase distribution...Ch. 2 - A 50-kVA, 20,000/480-V, 60-Hz, single-phase...Ch. 2 - Prove that the three-phase system of voltages on...Ch. 2 - Prove that the three-phase system of voltages on...Ch. 2 - A single-phase, 10-kVA, 480/120-V transformer is...Ch. 2 - Figure P2-4 shows a one-line diagram of a power...
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