EBK ELECTRICAL WIRING RESIDENTIAL
19th Edition
ISBN: 9781337516549
Author: Simmons
Publisher: CENGAGE LEARNING - CONSIGNMENT
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Chapter 23.1, Problem 1R
- a. What is the allowance in watts made for electric heat in this residence? ________
- b. What is the value in amperes of this load? _______________________________
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What follows is a numeric fill in the blank question with 3 blanks.
Figure 1 shows the three phases V-t graph in Turkey. Please write the indicated values with their units in boxes and Voltage - time function of each phase in table below. Please write the units in the second box.
1= _______________ V
2= ________________ms
3= _______________ms
Encircle the letter of the correct answer
1.One kW-Hr is equivalent to _______.
(a) 1,414.14 BTU per hour (b) 3,600,000 N.m(c) 1,414.14 Cal. per sec (d) 3,600,000 kJ
2. The voltage across any part of a circuit is equal to the _______ of the current in amperes and the resistance in Ohms.(a) difference (b) product(c) sum (d) quotient
3. In a series circuit the current is the _______ in any part of the circuit and the total emf (source) is equal to the _______ of the voltages across each resistor(a) same, sum (b) same, difference(c) same, total (d) sum, same
4. System efficiency when maximum power is transferred or delivered is ______.(a) 60%. (b) 150%.(c) 50%. (d) 200%.
5. In parallel circuit the emf across each resistor is the _____ and the total current is equal to the _____ of all branch currents(a) sum, same (b) same, product(c) same, difference (d) same, sum
6. 1,200 BTU is equivalent to _______ Joules.(a) 302,500 (b) 1,265,554(c) 302,400 (d) 3,600,000
7. Ohm’s Law states that, for…
1. explain why A wattmeter will indicate zero when the current lags (or leads) the voltage by 90 0.
2. Is a wattmeter required to measure the real power delivered to a resistive load?__________ Explain.
Chapter 23 Solutions
EBK ELECTRICAL WIRING RESIDENTIAL
Ch. 23.1 - a. What is the allowance in watts made for...Ch. 23.1 - What are some of the advantages of electric...Ch. 23.1 - List the different types of electric heating...Ch. 23.1 - There are two basic voltage classifications for...Ch. 23.1 - What device is required when the total connected...Ch. 23.1 - Prob. 6RCh. 23.1 - Prob. 7RCh. 23.1 - A certain type of control connects electric...Ch. 23.1 - What advantages does a 240-volt heating unit have...Ch. 23.1 - The white wire of a cable may be used to connect...
Ch. 23.1 - Receptacle outlets furnished as part of a...Ch. 23.1 - The branch circuit supplying a fixed electric...Ch. 23.1 - Prob. 13RCh. 23.1 - For ballpark calculations, the wattage output of a...Ch. 23.1 - A central electric furnace heating system is...Ch. 23.1 - What section of the Code provides the correct...Ch. 23.1 - Electric heating cable embedded in plaster, or...Ch. 23.2 - Prob. 1RCh. 23.2 - Prob. 2RCh. 23.2 - Prob. 3RCh. 23.2 - a. Must an air conditioner installed in a window...Ch. 23.2 - Prob. 5RCh. 23.2 - What is the Code requirement for receptacles...Ch. 23.2 - Prob. 7RCh. 23.2 - When the nameplate on an air-conditioning unit...Ch. 23.2 - Prob. 9RCh. 23.2 - Match the following terms with the statement that...Ch. 23.2 - The disconnect for an air conditioner or heat pump...
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