EBK ELECTRIC MOTOR CONTROL
10th Edition
ISBN: 9780100784598
Author: Herman
Publisher: YUZU
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 12, Problem 6SQ
When the thermostat contacts close, the blower motor does not start. During troubleshooting of the unit, a voltmeter placed across the bottom terminals of the circuit breaker indicates a voltage of 240 volts. When the voltmeter is placed across the secondary of the transformer it indicates a voltage of 24 volts. When placed across the thermostat contacts it indicates 0 volts. When the voltmeter is placed across the coil of CR relay it indicates 24 volts. When the voltmeter is placed across the flow switch contacts it indicates 0 volts. When placed across the coil of HR contactor coil it indicates 0 volts, and when placed across the coil of BMR contactor it indicates 0 volts. Which of the following is the problem?
- a. CR coil is open.
- b. BMR coil is open.
- c. The thermostat is defective.
- d. The flow switch is defective.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
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 12 Solutions
EBK ELECTRIC MOTOR CONTROL
Ch. 12 - Prob. 1SQCh. 12 - Draw a line diagram to show that a green light...Ch. 12 - Draw a one-line diagram showing a bell that will...Ch. 12 - To answer the following questions refer to Figure...Ch. 12 - When the thermostat contacts close, the blower...Ch. 12 - When the thermostat contacts close, the blower...Ch. 12 - When the thermostat contacts close the blower...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.Similar questions
- Q4) 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.arrow_forward(a) For a voltage phasor V(jω) and a current phasor I(jω), give an expression for the complex power.(b)Give three examples of how real (average) power might be dissipated.(c)A time-domain voltage is defined by the expression v(t)= 5 cos(πt/3) V. When this is applied across an impedance Z = 4∠60° Ω, determine:(i)The instantaneous power.(ii)The average power.arrow_forwardConsider the LTI system with the input x(t) = e^28(t) and the impulse response h(t) = e−²tu(t). a) Determine the Laplace transform of x(t) and h(t). (10 marks) b) Using convolutional property, determine the Laplace transform and the ROC for the output response y(t).arrow_forward
- (A) Consider a communication system where the number of successful transsions out of 10 trials follows a binomial distribution. The success probability for each triat is 0,95, Let X be the random variable representing the number of successful transmissions. -Sketch the cumulative distribution function (CDF) of the distribution. 2- Find Skewness coefficients and check if the distribution is symmetrical or skewed to the right or left. 3- Find kurtosis coefficients, Check if the distribution is mesokurtic, leptokurtic or platykurtic. 4- Find the probability of getting at most eigh. successful transmissions. 5- Find the probability P(20 with a mean 2-1 calculate the probability that the noise is greater than 3 units.arrow_forwardQ4: (A) Find the mean of a random variable X if S f(x)= 2x 0 2 for 0arrow_forward(A) Suopces the current measurements in a strip of wire are normally distributed with ca-10(mA) and a varieocom (mA)² 1- What is the probability that a current measurement lies between 7.4 and 11.6 mA? 2-Drew the probability density function of the current distribution. (8) A factory produces light bulbs with a koown probability of P(D)-0.08 that & bulo is dalective. If a bulb is defective, the probability that the quality control test detects it is defective is P(TID)-0.90. Conversely, if a bulb is not defective, the probability that the test Telesly indicaton k as defective is P(TID)-0.05. calculate the probability that a light b is notually defective given that the test result is positive, F(DIT).arrow_forwardTitle: Modelling and Simulating Boost Converter Battery Charging Powered by PV Solar Question: I need a MATLAB/Simulink model for a Boost Converter used to charge a battery, powered by a PV solar panel. The model should include: 1. A PV solar panel as the input power source. 2. A Boost Converter circuit for voltage regulation. 3. A battery charging system. 4. Simulation results showing voltage, current, and efficiency of the system. Please provide the Simulink file and any necessary explanations.arrow_forwardPlease answerarrow_forwardPlease solvearrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_ios
Recommended textbooks for you
Electricity for Refrigeration, Heating, and Air C...Mechanical EngineeringISBN:9781337399128Author:Russell E. SmithPublisher:Cengage Learning
Power System Analysis and Design (MindTap Course ...Electrical EngineeringISBN:9781305632134Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. SarmaPublisher:Cengage Learning
Electricity for Refrigeration, Heating, and Air C...
Mechanical Engineering
ISBN:9781337399128
Author:Russell E. Smith
Publisher:Cengage Learning
Power System Analysis and Design (MindTap Course ...
Electrical Engineering
ISBN:9781305632134
Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:Cengage Learning
Electrical Measuring Instruments - Testing Equipment Electrical - Types of Electrical Meters; Author: Learning Engineering;https://www.youtube.com/watch?v=gkeJzRrwe5k;License: Standard YouTube License, CC-BY
01 - Instantaneous Power in AC Circuit Analysis (Electrical Engineering); Author: Math and Science;https://www.youtube.com/watch?v=If25y4Nhvw4;License: Standard YouTube License, CC-BY