Electric Motor Control
10th Edition
ISBN: 9781133702818
Author: Herman
Publisher: CENGAGE L
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Textbook Question
Chapter 21, Problem 5SQ
After the forward coil has been energized, is the auxiliary forward interlocking contact open or closed?
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Students have asked these similar questions
Q.35
When overload contacts are connected into a control circuit, are they connected in series with the starter coil or in parallel with the starter coil?
Select one:
A. PARALLEL
B. SERIES
Design a relay latching circuit with an emergency stop button, stopbutton, and start button. There shall be an indicator light when the coil is energized and another indicator light when the coil is not energized.
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
Chapter 21 Solutions
Electric Motor Control
Ch. 21 - How is a change in the direction of rotation of a...Ch. 21 - Prob. 2SQCh. 21 - If a reversing control circuit contains...Ch. 21 - How is auxiliary contact interlocking achieved on...Ch. 21 - After the forward coil has been energized, is the...Ch. 21 - If a mechanical interlock is the only means of...Ch. 21 - If pilot lights are to indicate which coil is...Ch. 21 - What is the sequence of the operations if the...Ch. 21 - In place of the push buttons in Figure 214, draw a...Ch. 21 - From the elementary drawing in Figure 2110,...
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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
- If pilot lights are to indicate which coil is energized, where should they be connected? Additional auxiliary contacts are not to be used.arrow_forwardWhich of the following applies to an autotransformer starter with a five-pole starting contactor: open transition or closed transition? Locate in Figure 273.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_forward
- 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.arrow_forwardDraw an schematic control diagram of a reversing starter. Use a standard-duty selector switch with forward, reverse, and stop push buttons with three methods of interlocking.arrow_forwardWhat would be the best sense to use if arcing was taking place in a 3 phase motor contactor?arrow_forward
- Why is it not necessary to show the Armature and cross bar or the overload reset mechanism in a wiring diagramarrow_forwardExplain with the aid of a drawing or hand sketch how a bimetallic overload relay operates?arrow_forwardDraw an electrical diagram for a Star Delta starter with a forward rotation and reverse rotation switch.arrow_forward
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