Electric Motor Control
10th Edition
ISBN: 9781133702818
Author: Herman
Publisher: CENGAGE L
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Textbook Question
Chapter 59, Problem 2SQ
Why should the motor be run for a period of time following checkout?
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Explain how does the current will be reduced during the starting of the motor.
what are designed to protect the motor from an overload condition
you are working as a plant electrician. you are told that a large DC motor was returned from the rewind shop and was installed on the previous shift. the motor seemed to operate properly until load was added, the motor then stopped, reversed direction, and began to run at a high speed. what is the probable cause of the trouble, and what would you do to correct the problem?
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?
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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
- Select the best answer for each of the following. The purpose of overload protection on a motor is to protect the a. motor from sustained overcurrents. b. wire from high currents. c. motor from sustained overvoltage. d. motor from short circuits.arrow_forwardWhat is the Basic Energy conversation in a Motor and Generator?arrow_forwardHow can you reduce the amount of voltage applied to the motor during inching?arrow_forward
- what happened to the DC motor if it runs without any starter? Explain with diagramarrow_forwardState the correct terminology used to describe each of the following 1.the current drawn by a motor at standstill with the rate voltage and frequency applied. 2.the twisting or turning force of a motor . 3.the deference in speed between the motion and the rotation of the rotor shaft. 4.a device that provides and adjustable time period to perform a function.arrow_forwardWhy we do not have the motor continue running in its star connection.arrow_forward
- What is the motor used for pumping water in domestic application? Why?arrow_forward1. It is a machine that converts mechanical energy to electrical energy. 2. It is a machine that converts electrical energy to mechanical energy. 3. It is cylindrical or drum-shaped where the coils are placed and can either be lap wounded or wave wounded. 4. It connects the commutator to the other parts of the DC machine. 5. It serves as the housing of the dc machine. 6. True or False: The shunt field winding is part of the armature. 7. True or False: The long shunt compound generator is when the armature is in series with the series field winding and parallel to the shunt field winding. 8-10. Your newly built house needs an elevator. Which from the following will be best to use- series, shunt or compound motor and why?arrow_forwardWhat are the different maintenance that need to conduct on the GENERATOR and explain. a. Breakdown Maintenance b. Preventive Maintenance c. Condition Monitoringarrow_forward
- Which part of the D.C motor is used to change the direction of current after a half cycle? f O a. Loop or coil ion O b. Slip rings O. Split rings O d. Magnetic polesarrow_forwardc) Based on Figure 3 (c), a basic DOL starter induction motor at a power station is experiencing run-time error and unable to start, based on your understanding, interpret the sequence of troubleshooting shall be carried out to identify the root cause of the abnormalities. 3P 1P MCB MCB STOP K1 START MOTOR Figure 3 (c)arrow_forwardExplain how a DC motor works using hand drawn diagram. Thanksarrow_forward
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