Electric Motor Control
10th Edition
ISBN: 9781133702818
Author: Herman
Publisher: CENGAGE L
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 59, Problem 9SQ
To determine
List the probable causes for the failure of a coil to pick up.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Explain why the inrush current to an ax contactor coil is much higher than its normal operating current
Describe the purpose of the engine pickup coil and how it relates to Faraday’s law.
Calculate the coil pitches and indicate the slots into which the first coil should be placed for the following armature windings: (a) 36 slots, four poles; (b) 76 slots, six poles;
(c)270 slots, 10 poles.
(Our lesson is DC GENERATORS in the subject ELECTRICAL MACHINE 1)
PLEASE GAVE ME A CLEAN ANSWER AND SOLUTION. THANK YOU
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
- Why will the blowout coil also operate on AC?arrow_forwardHow long a wire is needed to coil a spring having a mean diameter of 1 inch if there are 8 active coils?arrow_forwardWhich of the following is/are a part a generator's electric circuit?a) the commutator b) the brushes c) the armature windings d) all of the abovearrow_forward
- if the armature winding has fractional pitch of 7/9, then coil span is ___ electrical degressarrow_forwardAn alternator is much less likely to burn out on a sustained short-circuit than a separately excited DC generator. Explain.please show your answer clean and readable. Thank you.arrow_forwardDetermine the minimum current for conductors required to connect a motor that has a full-load current of 46 A.arrow_forward
- The polarity markings on two coils are to be determined experimentally. The experimental setup is shown. Assume that the terminal connected to the positive terminal of the battery has been given a polarity mark as shown. When the switch is opened, the dc voltmeter kicks downscale. Where should the polarity mark be placed on the coil connected to the voltmeter?arrow_forwardparte A • Develop and explain the electrical schematic for the excitation coil in series.• Develop and explain the electrical schematic for the excitation coil in parallel.• Mention or cite examples about what use or application these 2 settings are used for.arrow_forward7. The armature of a six-pole generator carries a total of 350 amp. What current flows in each path if the winding is (a) lap? (b) wave?arrow_forward
- DEGREE: ELECTRICAL ENGINEERING SUBJECT/COURSE: AC MACHINES Answer the following questions (A, B and C) depending on the topic. 1. ALTERNATORS A. Why is it necessary to maintain the speed of an alternator at all times and how do they control the speed of an alternator when in operation? B. Distinguish between half-coiled and full-coiled armature windings in alternators. C. Why are fractional pitch windings generally used in alternators?arrow_forwardwhat is the conclusion for the concepts of rotating amature and rotating field in an alternator?arrow_forward19. What causes sparking at the brushes ? (DC GENERATOR QUESTION)arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Electricity for Refrigeration, Heating, and Air C...Mechanical EngineeringISBN:9781337399128Author:Russell E. SmithPublisher:Cengage Learning
Electricity for Refrigeration, Heating, and Air C...
Mechanical Engineering
ISBN:9781337399128
Author:Russell E. Smith
Publisher:Cengage Learning