Refrigeration and Air Conditioning Technology (MindTap Course List)
8th Edition
ISBN: 9781305578296
Author: John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher: Cengage Learning
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Chapter 4, Problem 9RQ
What safety precautions should be taken when starting a large electric motor whose coupling is disconnected?
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Chapter 4 Solutions
Refrigeration and Air Conditioning Technology (MindTap Course List)
Ch. 4 - Where would a technician encounter freezing...Ch. 4 - Which of the following can happen to a full...Ch. 4 - Why must nitrogen be used only with a regulator...Ch. 4 - What can happen when oil is mixed with oxygen...Ch. 4 - Trying to stop escaping liquid refrigerant with...Ch. 4 - Electrical shock to the body affects the _____.Ch. 4 - Electrical energy passing through the body causes...Ch. 4 - How can a technician prevent burning the...Ch. 4 - What safety precautions should be taken when...Ch. 4 - The third (green) wire on an electric drill is the...
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- What instrument is used to test the insulation of motor windings?arrow_forwardTrue or False: All electric motors must be cooled or they will overheat.arrow_forwardAn open winding in an electric motor means that A. the winding is making contact with the motor frame. B. one winding is making contact with another winding. C. a wire in one winding is broken. D. the centrifugal switch to the start winding is open.arrow_forward
- Which of the following is not part of the starter motor circuit? Battery Starting safety switch Starter motor Relay solenoidarrow_forwardWhen installing a motor control system, list four major factors to consider concerning the power system.arrow_forwardThe short-circuit protective device supplying the motors in question #10 is an inverse-time circuit breaker. What size circuit breaker should be used?arrow_forward
- Which of the following devices may be wired into the starting circuit of a motor to improve the starting torque? A. Another winding B. A start capacitor C. A thermostat D. A winding thermostatarrow_forwardAHO LUI 3. True or false? A magnetic field opposing the stator's magnetic field is produced in a motor's rotor by a process called induced magnetism.arrow_forwardA load is an electrical device that__________.a. produces electricityb. directs the flow of electricityc. assists in the starting of motorsd. uses electricity to do useful workarrow_forward
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General Industrial Safety; Author: Jim Pytel;https://www.youtube.com/watch?v=RXtF_vQRebM;License: Standard youtube license