Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
10th Edition
ISBN: 9781337399128
Author: Russell E. Smith
Publisher: Cengage Learning
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Textbook Question
Chapter 3, Problem 25RQ
What is the resistance of a series circuit with resistances of 4 ohms, 8 ohms, 12 ohms, and 22 ohms?
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Chapter 3 Solutions
Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)
Ch. 3 - What is a series circuit?Ch. 3 - What is a control circuit?Ch. 3 - Safety devices in an electrical circuit are...Ch. 3 - How are series circuits used in air-conditioning...Ch. 3 - Why are series circuits used for most control...Ch. 3 - The current draw in a series circuit is _____. a....Ch. 3 - The voltage drop of a series circuit is _____. a....Ch. 3 - How would switches used as safety devices be...Ch. 3 - Draw a series circuit with a thermostat, a...Ch. 3 - Two identical 115-volt light bulbs connected in...
Ch. 3 - Prob. 11RQCh. 3 - Prob. 12RQCh. 3 - Parallel circuits are used in the air-conditioning...Ch. 3 - Why are parallel circuits used in the...Ch. 3 - Prob. 15RQCh. 3 - Prob. 16RQCh. 3 - If two 115-volt loads were connected in parallel...Ch. 3 - What is a series-parallel circuit?Ch. 3 - Why are series-parallel control circuits important...Ch. 3 - Draw a series-parallel circuit with one switch...Ch. 3 - What is the resistance of a parallel circuit with...Ch. 3 - What is the resistance of a parallel circuit with...Ch. 3 - What is the total ampere draw of a parallel...Ch. 3 - What is the voltage of a series circuit with four...Ch. 3 - What is the resistance of a series circuit with...
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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_forwardIf there were a current flowing of 5A in a 120-V circuit,what would the resistance be? A. 25 B. 24 c. 600 D. 624arrow_forwardIf the resistance in a 120-V circuit was 40 , what would the current be in amperes? A. 4800A B. 48A C. 4A D. 3Aarrow_forward
- To protect electronic circuits, some voltage regulatorshave a __ circuit built into them.arrow_forwardWhich of the following is not a characteristic ofparallel circuits?a. Total circuit resistance is always less thanthe resistance of the leg with the lowest totalresistance.b. The current through each leg will be differentif the resistance values are different.c. The sum of the resistance in each leg equalsthe total circuit resistance.d. Source voltage will be dropped across eachleg of the parallel circuit.arrow_forwardHow many degrees are the current and voltage out of phase with each other in a pure resistive circuit?arrow_forward
- The collector leakage current in a transistor is 300 μA in CE arrangement. If now the transistor is connected in CB arrangement, what will be the leakage current? Assume β = 120. (2) For a certain transistor, IB = 20 μA; IC = 2 mA and β = 80. Calculate ICBO. (3) In a transistor, IB = 68 μA, IE = 30 mA and β = 440. Determine α rating of the transistor. Then determine the value of IC using both the α rating and β rating of the transistor.arrow_forwardA 10 kVA transformer has a primary voltage of 208 volts and a secondary voltage of 120 volts. What size circuit breaker should be used to protect the primary winding?arrow_forwardRefer to the circuit shown in Figure 1123. What is the function of resistor R3 in the circuit?arrow_forward
- An in-line ammeter must be connectedto a circuit in __________.a. seriesb. parallelarrow_forwardDetermine the total resistance and the current flow for the circuit shown in the accompanying figure?arrow_forwardParallel circuits are used in the airconditioning industry to __________.a. supply the correct line voltage toseveral circuitsb. act as a safety circuitc. divide the voltage between twomajor loadsd. all of the abovearrow_forward
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