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 12, Problem 18RQ
To determine
The importance of using the wire of appropriate size in any electrical circuit.
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Chapter 12 Solutions
Refrigeration and Air Conditioning Technology (MindTap Course List)
Ch. 12 - The __________is that part of an atom that moves...Ch. 12 - When this part of an atom moves to another atom,...Ch. 12 - State the differences between AC and DC.Ch. 12 - Describe how a meter would be connected in a...Ch. 12 - Describe how an amperage reading would be taken...Ch. 12 - Describe how the total resistance in a series...Ch. 12 - Ohm's law for determining voltage is _______.Ch. 12 - Ohm's law for determining amperage is_________.Ch. 12 - Ohm's law for determining resistance is_______.Ch. 12 - Prob. 10RQ
Ch. 12 - Describe the characteristics of the voltage,...Ch. 12 - If there were a current flowing of 5A in a 120-V...Ch. 12 - If the resistance in a 120-V circuit was 40 , what...Ch. 12 - Electrical power is measured in A. amperes. B....Ch. 12 - The formula for determining electrical power...Ch. 12 - Describe how a step-down transformer differs from...Ch. 12 - What are the three types of opposition to current...Ch. 12 - Prob. 18RQCh. 12 - What does forward bias on a diode mean?Ch. 12 - The unit of measurement for the charge a capacitor...
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- Describe the characteristics of the voltage, amperage, and resistances when there is more than one load in a parallel circuit.arrow_forwardWhy should electrical contacts never be permitted to open or close slowly?arrow_forwardTo trace the circuits in the unit, the _________diagramis used.arrow_forward
- Why is shielded wire used for signal runs?arrow_forwardDraw a series circuit with a thermostat,a low-pressure switch, and a highpressure switch used as safety controlsto protect a motorarrow_forwardA pressure switch is to be installed in a circuit that requires it to have three normally open contacts and one normally closed contact. The switch actually has one normally open Contact What must be done to permit this pressure switch to operate in this circuit?arrow_forward
- What factors govern the type of maintenance procedures and the maintenance intervals for transformers?arrow_forwardRefer to the circuit shown in Figure 5-29. Is the thermostat contact normally open, normally closed, normally closed held open, or normally open held closed? Figure 5-29 The contactor contains both load and auxiliary contacts.arrow_forwardTrue or False? A zero reading on an ohmmeter means the circuit or component is open.arrow_forward
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