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 2.16Q
Can a 60-Hz transformer be operated on a 50-Hz system? What actions are necessary to enable this operation?
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Q3:
Material A and Material B are collected in a tank as
shown where the system consists of three Push-Button,
three Level Sensors, two Inlet valve, one Outlet valve,
Heater, Temperature Sensor, Agitator Motor, and
Alarm Light. Material A and Material B are to be
mixed and heated until it reaches 90°C temperature,
and it will be drain using outlet valve also high-level
Alarm Light will come ON when the tank is full and
stay on even if the tank level drops until the operator
press Reset Push-Button. Implement automation of
this system in PLC using Ladder Diagram
programming language (Note: The tank is fed with
Material A before B and the temperature sensor can
withstand 200°C and it gives voltage from 0 to 10
volts)
(25 Marks)
Valve A
Agitator
Motor
Valve B
Level B
Heater
E
Level A
Low Level
Sta
Start Push-Button
Stop Push-Button
36.
ویر
نکند
Temperature sensor
Outlet
Valve
Reset Push-Button
Alarm Light
.Explain how a gated J-K latch operates differently from an edge-triggered J-K flip-flop.
. For the gated T Latch circuit, answer the following:
a) Draw the gate-level diagram of a gated T latch using basic logic gates and SR latch
b) Write the characteristic equation.
c) Draw the state diagram.
A Digital Filter is described by the
following. difference equation:
Y(n)=0.5x(n) 0.5(n-2)
-
Find the transfer function ..
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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