electronics testing with a multimeter
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8/20/2019 Electronics Testing With a Multimeter
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When
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Questions to 20:
Select
the
best answer
to
each question. Note that a question
and its
answers may be split across a page
break so be sure
that
you have
seen
the entire question and ll the
answers
before
choosing
an answer.
1.
Of the following common metals, which has the highest conductivity rating?
~ i l v e r
B.
Copper
C.
Gold
D.
Aluminum
Use
this illustration to answer the question below.
2. Look at the circuit shown in the figure above. With switch S
1
closed, you re making voltage
measurements with your meter. Assume that each of the four resistors has a resistance value of I 00 kfl.
You measure 3.6 V across resistor Rl 1.2 V across resistor R
2
,
1.2 V across resistor R
3
,
and 2.4 V across
resistor R
4
.
What is the battery voltage
in
the circuit?
A.6V
B.4V
C.2V
D.lOV
Use
this illustration to answer the question below.
D
R
V
8
R2
E
c
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3. In the circuit shown in the figure above, where would you connect your meter s test probes to measure
the full battery voltage?
A To points D and E, or to points Band E
B. To points A and Conly
C. To points D and E, or to points A and C
D. To points B and E only
Use
this illustration to answer the question below.
4. Assuming that each of the resistors in the circuit shown in the figure above has a resistance value of 20
k l
and switch 1
is
closed, which resistor will dissipate the most power?
A.R
3
B R
4
C.R
2
D. R
1
Use
this illustration to answer the question below.
6V
=
M4
. Look at the circuit shown in the figure above. The circuit contains a 6 V battery and three resistors. Fo
meters are being used to make measurements in the circuit. Meters M
1
, M
2
, and M
3
are being used to
easure current at different points in the circuit. Meter M
4
is
being used to measure voltage at another
in the circuit. With
s
1
closed, M
1
has a current reading of0.04A. What will be the total resistance in
his circuit?
3oo
n
son
c 1oo
n
1so
n
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Use
this illustration to answer the question below.
Ar<
c
~
Rl
0
R
V =
B
E
6. Look at the circuit shown in the figure above. Switch S
1
is open as shown, and R
1
and R
2
each have a
value of
100 kfl
If you connect your meter s test probes to points A and B in the circuit, what voltage
would you measure?
A 6V
B OV
C 9V
D. 3 V
Use this illustration to answer the question below.
. Again, assume that each
of
the resistors in the circuit shown in the figure above has a resistance value o
100 kfl With switch S open as shown, you measure the voltage across each resistor with your meter.
hich of the following statements is correct?
Resistors R
4
and R
1
will
dissipate equal
amounts
of power.
. Resistors R
1
, R
2
, and R
3
will dissipate equal amounts of power.
C.
Resistor R
1
will dissipate
the
most power.
3
will
dissipate the most power.
y precaution must be observed when measuring resistance in an electronic circuit?
red test lead
must
be at the most positive point
in
the
circuit.
The black test lead must be connected to the chassis ground.
C.
The meter s
highest resistance range setting should
be
used until
the
actual value
is
determined.
power to the component under test must be disconnected.
se this illustration to answer the question below.
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0
A
l
6V :
B
e
c
9. Look at the circuit illustrated in the figure above. Assume that the values ofR
n d ~ are equal.
If
you
connect your meter s test probes to points A and B in the circuit, which
of
the following voltages would
you measure?
OV
B 9V
C 3V
6V
se this illustrat ion to answer
the
question below.
6V =
M4
10. What will be the total power dissipated in the circuit shown in the figure above
ifMl
has a current
of
0.04
A.?
W
150W
se this illustra tion to
answer
the question below.
Ar<
c
W
l
D
R
V :
B
e
1. For the circuit shown in the figure above, the correct procedure for measuring the resistance value of
is
to
8/20/2019 Electronics Testing With a Multimeter
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A.
connect the multimeter between points C and D and measure the resistance with switch S
1
open.
B. connect the multimeter between points D and A and measure the resistance with switch S
1
open.
C. connect the multimeter between points C and D and measure the resistance with switch S
1
closed.
D.
connect the
multimeter between points D
and
A and
measure the
resistance with switch S
1
closed.
Use this illustration to
answer the
question below.
0
A
Rl
6V =
8
E
c
the circuit shown in the figure below suppose that the value of R
1
is 500 kfl. To obtain a
of V between points B and C in the circuit the value o ~ would have to be
10 000 kfl.
1 000 kfl.
answer
the question below.
A
0
Rl
V
=
8
R
E
c
the circuit shown in the figure above suppose that the value of R
1
is 100 kfl and the value
of
R
2
i
kfl. At which of the following locations in the circuit would you measure the highest voltage with you
Between points B and C
points B and E
Between
points A and B
points A and C
answer
the
question below.
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14. Assuming that each of the resistors in the circuit shown in the figure above has a resistance value of
100
kfl
what will be the total resistance
of
the circuit with switch
s
1
closed?
167
kfl
400kfl
c 100 kfl
280kfl
answer the question below.
6V
:::::::::
M4
Look at the circuit shown in the figure above. With switch
s
1
closed, meter M
4
reads
4
V across R
3
.
1
and R
2
?
The meter would read 4 V across R
1
and 4 V across R
2
.
1
and R
2
.
R
1
and 2 V across R
2
.
1
and R
2
.
answer the
question below.
Ar<
c
~
Rl
R
V :
8
E
You re using your meter to make voltage measurements in the circuit shown in the figure above. Your
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meter is connected between points A and C, and you re getting a reading of 6 on the display. What can
you conclude from this reading?
A. Resistor R
2
has a resistance value that s twice the
value
of either R
1
.
B.
Resistors
R
1
and
R
2
have
equal
resistance
values.
C. Switch S
1
is closed.
D. Switch S
1
is open.
Use this illustration to answer the question below.
6V
M
s
closed and the resistance value of R
an
equal, meter M
1
has a current reading
of
0.04
A.
What will be the current readings on meter M
2
and
3
?
Meter M
2
will read 0.02
A,
and meter M
3
will read
0.02 A.
Meter M
2
and meter M
3
will both
read
0.1
A
Meter M
2
will read 0.2 A,
and
meter M
3
will read 0.4 A
Meter M
2
and meter M
3
will both read
0.04
A
this illustration to answer the question below.
6V:::::::::
M
3
displays a higher current reading than
of the following could be the cause of this condition?
Switch S
1
is open.
Resistor R
3
is
open.
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C. Resistor R
1
is
shorted.
D Resistor R
2
is
shorted.
Use this illustration to answer the question below
.r<.
c
W
R
R
V =
E
19 In the circuit shown in the figure above where R
1
and R
2
have equal resistance values, when switch S
is closed, what voltage would you measure across with your meter?
6V
.ov
0 Imagine that you've properly connected your multimeter into an operating circuit, and the meter's
unction/range switch is set to read DC voltage in the 20 V range. The meter displays a 1 in the most
ignificant digit position. This indicates that
function/range switch should be set to the next lowest range
the
power to the circuit
is
turned off
C
the
voltage
at
the
point under test
is
greater than
20
V
the
meter measured a voltage of 1 V at the point under test
of exam
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