
Electric Motor Control
10th Edition
ISBN: 9781305177611
Author: Herman
Publisher: Cengage
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 59, Problem 1SQ
To determine
Write the characteristics of a person who shall operate and maintain electrical machinery.
Expert Solution & Answer

Explanation of Solution
Discussion:
The electrical machinery is usually operated with high voltage and the rotational machines are rotated with high speeds. Therefore, it is required to take much care to install, maintain, and operate the electrical machinery. The improper maintenance of electrical machinery leads to serious and fatal injuries to the person who maintains the machinery.
The characteristics that are required to a person to maintain and operate the electrical machinery are written as follows:
- The person must be a skilled and qualified electrician.
- The person must have a safety conscious.
- The person must be an experienced electrician.
Conclusion:
Thus, the characteristics of a person to operate and maintain electrical machinery are listed.
Want to see more full solutions like this?
Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
A single phase a.c. distributor AB has:
The distance from A to B is 500 m. The distance from A to C is 800 m.
The impedance of each section is (6+j 8) /km.
A
B
C
The voltage at the far end is maintained at 250 volt.
Find: sending voltage, sending current, supply power factor and
80 A
60 A
total voltage drop.
0.8 lag. P.f
0.6 lead. p.f
A 3-phase, 4-wire distributor supplies a balanced voltage of 400/230 V to a load consisting of 8 A at p.f. 0-7
lagging for R-phase, 10 A at p.f. 0-8 leading for Y phase and 12 A at unity p.f. for B phase. The resistance
of each line conductor is 0.4 2. The reactance of neutral is 0.2 2. Calculate the neutral current, the supply
voltage for R phase and draw the phasor diagram. The phase sequence is RYB.
The three line leads of a 400/230 V, 3-phase, 4-wire supply are designated as R, Y and B respectively.
The fourth wire or neutral wire is designated as N. The phase sequence is RYB. Compute the currents
in the four wire when the following loads are connected to this supply:
From R to N: 25 kW, unity power factor.
From Y to N: 20 kVA, 0-7 lag.
From B to N: 30 kVA, 0-6 lead.
Chapter 59 Solutions
Electric Motor Control
Ch. 59 - Prob. 1SQCh. 59 - Why should the motor be run for a period of time...Ch. 59 - What may occur if a jumper is placed across coil M...Ch. 59 - In what position do ball-bearing motors function?Ch. 59 - Motors will operate satisfactorily at what percent...Ch. 59 - What basic sensory faculties should a...Ch. 59 - What is an orderly step-by-step procedure in...Ch. 59 - What might be a hazard if a motor is started in...Ch. 59 - Prob. 9SQCh. 59 - What are the probable causes of a noisy magnet?
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
- A 3-phase, 50 Hz, 132 kV overhead line transpose system of bundle conductors .a radius of conductor is 0.5 cm. Calculate the total inductance of the line. 4m bi 4m C1 C1 im am biarrow_forwardInth big below:- A 500m B Zoom с 180011 I=50A I-60A I-804 06 ·0.7 0.8 lag. unit) Teading Pf P.F Pl A I sing phase distributor of 3/cm = The distance from point A To B is 500m distance from point A To C is /200m The distance from point A To D is 3000m The impedance of each part is. ZAB-0.51j0.8 -2/km ZBC= 0.7+71.2 12/1cm ZCD = 1.3772.5 -2/1cm The voltage of end for is VD= 220 Volt Find : 1- sending Voltage senting power 2- 5arrow_forwardConsider the circuit diagram below, where the load is indicated by the dashed box. Compute the apparent power and power factor of the load. Use power factor correction to correct the power factor of the load to 0.8 lagging. Your solution should include a circuit diagram of your modified circuit.arrow_forward
- Consider the circuit diagram below. What is the power factor of the circuit? Is it leading or lagging? Draw the power factor triangle of the circuit without calculating the individual power consumption of each component.arrow_forwardExplain what is wrong with each diagram in Fig. 6.41 if the two op amps are known to be perfectly ideal.arrow_forwardAmplitudes are given in peak values. Use node analysis to determine the voltage at nodes a and b. Express the voltages as sinusoids in the time domain with phase angles measured in radians. You may solve the system of equations using MATLAB or a similar software, but you must include the code you ran as part of your solution.arrow_forward
- Q3a [3 points] Simplify the following Boolean function using K-map: f= (0,2,8,9,10,12) & don't care X= (1,7,14) Put each cell number in the cell left upper corner. Put 1, O or X inside each cell. Circle your groups Write the simplified function f in terms of x, y, z and w ESM MZ f= Q3b [2 point] Design the above simplified Boolean function f after k-map using iCircuit then post your design screenshot here:arrow_forwardQ1a [2 points] Convert the binary into octal and hexadecimal? (10101111101)2 = ( )2 = ( )8 (10101111101) = ( )2 = ( )16 Q1b [2 points] Convert the decimal number 91.125 into binary? 91/2 = 91.25=( )2 0.125x2 = Q1c [1 point] Convert (101110), into decimal?arrow_forwardQ2 [5 points] Given the following Truth Table: f m X M 0 0 0 0 1 1 0 0 1 1 2 0 1 0 1 3 0 1 1 0 4 1 0 0 1 5 1 10 1 0 6 1 1 0 1 7 1 1 1 1 [1 point] Find the Boolean Function f in Minterms form: f=m( [1 point] Find the Boolean Function f in terms of x, y and z: f= [3 point] Simplify the above Boolean Function f in the sum form using k-map: Put each cell number in the cell left upper corner. Put 1's or 0's in each cell Circle any group of 4 ones, if not, circle any group of 2 ones Write the simplified function f in terms of x, y and z Narrow_forward
- Q4) A: Derive with the aid of diagrams the critical clearing angle for synchronous generator connected to infinite bus bar through parallel transmission line when fault occurs at the sending end of the lines.arrow_forwardQ3) A:A 60 Hz, 4 pole turbo-generator rated 10 MVA., 20 KV has stored energy in the rotor at synchronous speed of 90 MJ. (a) Find. M the anguler momentum. (b)If the generator supply 10 MW load at synchronous speed, find rotor acceleration in degrees/sec.² and in rpm/sec if the rotor drop to 5MW. (c) If the rotor acceleration calculated in part (b) is maintained for 12 cycles, find the change in torque angle and rotor speed in rpm at the end of this period.arrow_forwardChat gpt responses and ai responses are reported immediately reported please solve this question step by step handwritten solution thanksarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Introductory Circuit Analysis (13th Edition)Electrical EngineeringISBN:9780133923605Author:Robert L. BoylestadPublisher:PEARSONDelmar's Standard Textbook Of ElectricityElectrical EngineeringISBN:9781337900348Author:Stephen L. HermanPublisher:Cengage LearningProgrammable Logic ControllersElectrical EngineeringISBN:9780073373843Author:Frank D. PetruzellaPublisher:McGraw-Hill Education
- Fundamentals of Electric CircuitsElectrical EngineeringISBN:9780078028229Author:Charles K Alexander, Matthew SadikuPublisher:McGraw-Hill EducationElectric Circuits. (11th Edition)Electrical EngineeringISBN:9780134746968Author:James W. Nilsson, Susan RiedelPublisher:PEARSONEngineering ElectromagneticsElectrical EngineeringISBN:9780078028151Author:Hayt, William H. (william Hart), Jr, BUCK, John A.Publisher:Mcgraw-hill Education,

Introductory Circuit Analysis (13th Edition)
Electrical Engineering
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:PEARSON

Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Cengage Learning

Programmable Logic Controllers
Electrical Engineering
ISBN:9780073373843
Author:Frank D. Petruzella
Publisher:McGraw-Hill Education

Fundamentals of Electric Circuits
Electrical Engineering
ISBN:9780078028229
Author:Charles K Alexander, Matthew Sadiku
Publisher:McGraw-Hill Education

Electric Circuits. (11th Edition)
Electrical Engineering
ISBN:9780134746968
Author:James W. Nilsson, Susan Riedel
Publisher:PEARSON

Engineering Electromagnetics
Electrical Engineering
ISBN:9780078028151
Author:Hayt, William H. (william Hart), Jr, BUCK, John A.
Publisher:Mcgraw-hill Education,