Electricity for Refrigeration, Heating, and Air Conditioning
9th Edition
ISBN: 9781285179988
Author: Russell E. Smith
Publisher: Cengage Learning
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Textbook Question
Chapter 1, Problem 12RQ
True or False: The correct fuse size for an electrical circuit is one that is sized twice as large as needed for circuit protection.
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The type of hazard whereby sparks are generated electrically is called:
Explosion
contact
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strain.
The maximum power is delivered to a circuit when source resistance is
load resistance.
O a. Less than
O b. Greater than or equal to
O c. Equal to
O d. Greater than
True or False? In a parallel circuit, circuit current is the same throughout all parts of the circuit.
Chapter 1 Solutions
Electricity for Refrigeration, Heating, and Air Conditioning
Ch. 1 - True or False: A heating and air-conditioning...Ch. 1 - What is a live electrical circuit?Ch. 1 - Which of the following voltages will a...Ch. 1 - Electrical shock occurs when a person _________....Ch. 1 - What are the important elements of electrical...Ch. 1 - Prob. 6RQCh. 1 - Which of the following is the standard by which...Ch. 1 - Prob. 8RQCh. 1 - What type of ladder should the technician use on...Ch. 1 - What precautions should be taken when you see a...
Ch. 1 - True or False: It is recommended that at least one...Ch. 1 - True or False: The correct fuse size for an...Ch. 1 - What is the difference between a two-prong plug...Ch. 1 - Which prong on a three-prong plug is the ground?...Ch. 1 - True or False: A grounding adapter does no good if...Ch. 1 - An electrical device that will open an electrical...Ch. 1 - True or False: Receptacles used on the job site...Ch. 1 - What precautions should you use when working in an...Ch. 1 - What is the difference between a fuse and a...Ch. 1 - List at least five electrical safety rules that...
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- Wiring harnesses are typically shielded by plasticconduit. What color is normally used to shield SRSrelatedwiring?a. Blackb. Greenc. Yellowd. Orangearrow_forwardWhat happens to an electrical circuit when thereis unwanted resistance in it?arrow_forwardTrue or False: An SCR is an electronic switch.arrow_forward
- True or False? An open switch is one that can flow current through it.arrow_forwardTrue or False: When troubleshooting a small system, the first step is to attach the high- and low-pressure gauges.arrow_forwardWhat is the device that consists of two unlike metal strips that are attached and have a different rate of expansion and contraction? A. Thermistor B. Thermocouple C. Diaphragm D. Bimetalarrow_forward
- Which type of resistor is commonly used in automotive circuits? a. Fixed value b. Stepped c. Variable d. All of the abovearrow_forwardElectrical shorts are commonly caused by Select one: a. Wire movement b. heat melting the insulation c. Accident d. allarrow_forwardTitle True or False? A spark plug with two ground electrodes will provide two separate sparks when fired.. Description True or False? A spark plug with two ground electrodes will provide two separate sparks when fired. Why is high voltage needed to establish a spark across the gap of a spark plug? List the advantages of having one ignition coil per cylinder. Which of the following is a function of all ignition systems? a. To generate sufficient voltage to force a spark across the spark plug gap b. To time the arrival of the spark to coincide with the movement of the engine’s pistons c. To vary the spark arrival time based on varying operating conditions d. All of the abovearrow_forward
- what is a thermistorarrow_forwardHigher pairs are those which have Choose the correct option Surface contact between elements Point or line contact between elements None of the mentioned No contact between elementsarrow_forwardWhich of the following is the purpose of fail-safe circuits? O Fail-safe circuits are designed to protect electric motors against voltage surge O All of these are true O Fail-safe circuits are designed to provide overload protection for system components O Fail-safe circuits are designed to maintain constant current in electric motor coilsarrow_forward
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