Electric Motor Control
10th Edition
ISBN: 9781133702818
Author: Herman
Publisher: CENGAGE L
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Textbook Question
Chapter 11, Problem 5SQ
In Figure 11–10, the reset button is
a. single-acting normally closed.
b. single-acting normally open.
c. double-acting normally closed.
d. double-acting normally open.
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Students have asked these similar questions
Q.11
A normally open auxiliary contact connected in parallel to maintain a circuit to the relay coil when the push button is released is part of what type of control circuit?
Select one:
A. START-STOP PUSH BUTTON
B. JOGGING SWITCH
C. STARTING SWITCH
D. EMERGENCY STOP BUTTON
QUESTION 24
When an instantaneous contact is needed and the timing relay does not have one a control relay is wired in series with the timer.
True
False
2. An 11-pin control relay contains three sets of single-pole, double-throw contacts. List the pin numbers by pairs that can be used as normally open contacts.
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- In Figure 236, what will happen if both jog push buttons are pushed momentarily?arrow_forwardAn 11-pin control relay contains three sets of single-pole, double-throw contacts. List the pin numbers by pairs that can be used as normally closed contacts.arrow_forwardlist the precautions you would observe before and during the carrying out of maintenance in switch geararrow_forward
- Select the best answer for each of the following. A single-break control is a a. heavy-duty selector switch. b. single-circuit push button. c. standard-duty selector switch. d. double-circuit push button.arrow_forwardState and explain 5 principles of finding faultarrow_forwardA disconnect switch is used to __________. a. open and close the main power source to a piece of equipment b. stop and start a compressor c. control the operation of an electric heater d. open when an unsafe condition occursarrow_forward
- Magnetic Tape Recording Explain briefly the mechanism of Magnetic Tape Recording and how is induced electromagnetism applied in such. Magnetic Levitation (MagLev) Traing Explain briefly the mechanism of Magnetic Levitation (MagLev) Train and how is induced electromagnetism applied in such. Ground Fault Interrupter Explain briefly the mechanism of Ground Fault Interrupter and how is Faraday’s Law applied in such. Induction Stove Explain briefly the mechanism of Induction Stove and how is Faraday’s Law applied in such. Explain short and concise. Thank you.arrow_forwardqustion 16: What type of timing relay is this print drawn up for? a On-Delay, Pneumatic b On-Delay, Electronic c Off-Delay, Pneumatic d Off-Delay, Electronicarrow_forwardSelect the best answer for each of the following. When the reset button does not reestablish the control circuit after an overload, the probable cause is a. the overload heater is too small. b. the overload trip has not cooled sufficiently. c. the auxiliary contacts are defective. d. the overload heater is burned out.arrow_forward
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