EBK ELECTRICAL WIRING RESIDENTIAL
19th Edition
ISBN: 9781337516549
Author: Simmons
Publisher: CENGAGE LEARNING - CONSIGNMENT
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Chapter 19.2, Problem 8R
For residential water heaters, the Consumer Product Safety Commission suggests a maximum temperature setting of ___________ °F (_____________ °C). Some states have laws stating a maximum temperature setting of ____________ °F (________________ °C).
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Assignment #2
A 110-V, three-phase, Y-connected, 8 pole, 48-slot, 6000-rpm,
double-layer wound, synchronous generator has 12 turns per coil.
If one side of the coil is in slot 1, the other side is in slot 6. There
are 4 parallel paths. When the generator delivers the rated load at
a line voltage of 110 V, the voltage regulation is 5%. What is the
flux per pole?
Draw two consecutive phasegroups of one of the phase windings
and connect them (a) in series and (b) in parallel showing the
Start (S) and Finish (F) of both connections. (A separate drawing
for each connection)
3-4 Transmissiva Live of 120km has
R= 0.2
~2/15
X= 0.8 -2/km
Y = 15H/6 5/km
The line is supplies a load of 45 kV, SOMW, 0.8 lead p.f
find sending voltage,
Sending Current
p.f. Sanding
Voltage Regulation
⑨Voltage
5
Ⓒ charching coming!
изу
usy π cct
ले
A (medium) single phase transmission line 100 km long has the following
constants :
Resistance/km = 0.25 Q;
Susceptance/km = 14 × 10° siemen ;
Reactance/km = 0.8
Receiving end line voltage = 66,000 V
Assuming that the total capacitance of the line is localised at the receiving end alone, determine
(i) the sending end current (ii) the sending end voltage (iii) regulation and (iv) supply power factor.
The line is delivering 15,000 kW at 0.8 power factor Lead Draw the phasor diagram to illustrate
your calculations.
Chapter 19 Solutions
EBK ELECTRICAL WIRING RESIDENTIAL
Ch. 19.1 - Does a jet pump have any electrical moving parts...Ch. 19.1 - Prob. 2RCh. 19.1 - Where is the jet of the pump located?...Ch. 19.1 - Prob. 4RCh. 19.1 - Prob. 5RCh. 19.1 - Prob. 6RCh. 19.1 - Prob. 7RCh. 19.1 - What is compressed in the water storage tank?...Ch. 19.1 - Explain the difference between a 2-wire...Ch. 19.1 - Prob. 10R
Ch. 19.1 - Why is a 240-volt motor preferable to a 120-volt...Ch. 19.1 - How many amperes does a 1-horsepower, 240-volt,...Ch. 19.1 - What size are the conductors used for this branch...Ch. 19.1 - Prob. 14RCh. 19.1 - What provides the running overload protection for...Ch. 19.1 - What is the maximum ampere setting permitted for...Ch. 19.1 - Prob. 17RCh. 19.1 - Because the controller contains the motor starting...Ch. 19.1 - Prob. 19RCh. 19.1 - Proper pressure of the submersible pump system is...Ch. 19.1 - Fill in the data for a 16-ampere electric motor,...Ch. 19.1 - The NEC is very specific in its requirement that...Ch. 19.1 - Does the NEC allow submersible pump cable to be...Ch. 19.1 - Must the disconnect switch for a submersible pump...Ch. 19.1 - A metal well casing (shall) (shall not) be bonded...Ch. 19.2 - Prob. 1RCh. 19.2 - A major hazard involved with water heaters is that...Ch. 19.2 - Prob. 3RCh. 19.2 - The heating elements in electric water heaters are...Ch. 19.2 - An 80-gallon electric water heater is energized...Ch. 19.2 - Prob. 6RCh. 19.2 - For residential water heaters, the Consumer...Ch. 19.2 - An 80-gallon electric water heater has 60F...Ch. 19.2 - Approximately how long would it take to produce...Ch. 19.2 - Two thermostats are generally used in an electric...Ch. 19.2 - a. How many heating elements are provided in the...Ch. 19.2 - When does the lower heating element operate?...Ch. 19.2 - Prob. 14RCh. 19.2 - Prob. 15RCh. 19.2 - Prob. 16RCh. 19.2 - a. If both elements of the water heater in this...Ch. 19.2 - a. How much power in watts would the two elements...Ch. 19.2 - A condominium owner complains of not getting...Ch. 19.2 - For a single, nonmotor-operated electrical...Ch. 19.2 - A 7000-watt resistance-type heating appliance is...Ch. 19.2 - Prob. 22R
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