Here is the "Electricity - Basic Navy Training Courses"
(NAVPERS 10622) in its entirety. It should provide one of the Internet's
best resources for people seeking a basic electricity course - complete with examples
worked out. See
copyright. See
Table of
Contents. • U.S. Government Printing Office; 1945 - 618779
Chapter 9 QUIZ
PARALLEL CIRCUITS
1. Work out the answers for each unknown in the practice circuits in the
following drawing.
2. Four motors are paralleled on a 120 volt line. What is the total line current
if each
motor draws 2.5 amperes?
3. What is the total resistance of one 10 ohm resistor, one 20 ohm resistor,
and one
30 ohm resistor if they are connected in parallel?
4. Two loads are connected in parallel on a 220 volt line. The first draws 25
amperes and
the second draws 41 amperes. What is the total
current? What is the total resistance?
5. In a 120 volt parallel circuit there are four devices. One requires 1/2 ampere,
another
1/4 ampere, another 1-1/4 amperes, and the fourth
3 amperes. What is the total
current required?
6. What is the resistance of each device in problem 5? What is the total resistance?
Chapter 9 ANSWERS
PARALLEL CIRCUITS
1. A:E1 = 12 V., E2 =
12 V., E3 = 12 v. B:It = 15a., C:Rt
= 2 ohms. D:Rt = 2 ohms.
2. 10 amps.
3. 5.45 ohms.
4. 66 amps. 3.33 ohms.
5. 5 amps.
6. 240 ohms, 480 ohms, 96 ohms, 40 ohms,
24 ohms.
Return to
Chapter 9
|
