Chapter 22 Basic Electrical Tests 361
18. What three testing devices might be used to
test a switch?
19. What is the most accurate way to check a
variable resistor?
Use the circuit drawing in Figure 22-39 to
answer questions 20 through 24. The battery
produces 12.6 volts (6 cells at 2.1 volts each). The
bulb burns very dimly with the switch on.
20. Would test A be needed with these
symptoms or conditions?
21. What does test B tell you?
22. Test C would verify:
(A) That electricity is not leaking through
the bulb socket.
(B) That the ground does not have low
resistance.
(C) That the ground does not have high
resistance.
(D) All of the above.
(E) None of the above.
23. What would you learn from test D?
24. How would you repair the circuit problem?
ASE-Type Questions ASE-Type Questions
1. Technician A says a basic circuit problem can
be caused by something in the circuit that
increases voltage. Technician B says a basic
circuit problem can be caused by something
in the circuit that decreases resistance. Who
is right?
(A) A only.
(B) B only.
(C) Both A and B.
(D) Neither A nor B.
2. An automobile is brought into the shop with
an engine electrical problem. Technician A
says the fi rst step to electrical diagnosis is
to verify the symptoms and the problem.
Technician B says electrical diagnosis
involves using a logical sequence of steps to
fi nd the source of the problem. Who is right?
(A) A only.
(B) B only.
(C) Both A and B.
(D) Neither A nor B.
3. More than one component in a particular
automotive electric circuit is not working.
Technician A starts testing the circuit at the
power source. Technician B starts testing the
circuit at its load. Who is right?
(A) A only.
(B) B only.
(C) Both A and B.
(D) Neither A nor B.
4. There is an open in an automobile’s
headlight circuit. Technician A says this
problem can be caused by a blown fuse.
Technician B says the problem may be
caused by burned switch contacts. Who is
right?
(A) A only.
(B) B only.
(C) Both A and B.
(D) Neither A nor B.
5. Technician A says an open will always
stop current in a circuit. Technician B says
high circuit resistance will normally reduce
current in a circuit. Who is right?
(A) A only.
(B) B only.
(C) Both A and B.
(D) Neither A nor B.
6. Technician A says a short circuit can be
caused by a conductor touching ground.
Technician B says a short circuit can be
caused by a conductor touching another
conductor. Who is right?
(A) A only.
(B) B only.
(C) Both A and B.
(D) Neither A nor B.
7. Technician A says intermittent problems
occur only under certain conditions.
Technician B says intermittent problems are
often caused by poor electrical connections.
Who is right?
(A) A only.
(B) B only.
(C) Both A and B.
(D) Neither A nor B.