Interview Question in DC circuits
Interview Question :: Practice exercise for electricity
anybody have the answers for exam #00290201? I really could use the help ... thanks a bunch.
1. Look at the circuit illustrated in Figure A-1. Assume that the values of R1 and R2 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?
A. 9 V
B. 6 V
C. 3 V
D. 0 V
2. In the circuit shown in Figure A-1, where would you connect your meter's test probes to measure the full battery voltage?
A. To points D and E, or to points B and E
B. To points A and C only
C. To points D and E, or to points A and C
D. To points B and E only
3. In the circuit shown in Figure A-1, suppose that the value of R1 is 100 kW and the value of R2 is 470 kW. At which of the following locations in the circuit would you measure the highest voltage with your meter?
A. Between points A and C
B. Between points A and B
C. Between points B and C
D. Between points B and E
4. In the circuit shown in Figure A-1, suppose that the value of R1 is 500 kW. In order to obtain a multimeter reading of 1 V between points B and C in the circuit, the value of R2 would have to be
A. 10 kW.
B. 100 kW.
C. 1,000 kW.
D. 10,000 kW.
5. Imagine that you've properly connected your multimeter into an operating circuit, and the meter's function/range switch is set to read DC voltage in the 20 V range. The meter displays a "1" in the most significant digit position. This indicates that
A. the meter measured a voltage of 1 V at the point under test.
B. the power to the circuit is turned off.
C. the voltage at the point under test is greater than 20 V.
D. the function/range switch should be set to the next lowest range.
6. Silver has the highest conductivity rating of any common metal. Which of the following correctly ranks metals in decreasing levels of conductivity?
A. Silver, zinc, gold, platinum
B. Silver, copper, aluminum, lead
C. Silver, gold, nickel, mercury
D. Silver, copper, gold, aluminum
FIGURE A-2—Use this illustration to answer Questions 7, 8, 9, and 10.
7. Look at the circuit shown in Figure A-2. Switch S1 is open as shown, and R1 and R2 each have a value of 100 kW. If you connect your meter's test probes to points A and B in the circuit, what voltage would you measure?
A. 9 V
B. 6 V
C. 3 V
D. 0 V
8. For the circuit shown in Figure A-2, the correct procedure for measuring the resistance value of R1 is to
A. connect the multimeter between points C and D and measure the resistance with switch S1 open.
B. connect the multimeter between points C and D and measure the resistance with switch S1 closed.
C. connect the multimeter between points D and A and measure the resistance with switch S1 open.
D. connect the multimeter between points D and A and measure the resistance with switch S1 closed.
9. You're using your meter to make voltage measurements in the circuit shown in Figure A-2. Your meter is connected between points A and C, and you're getting a reading of 6 V on the display. What can you conclude from this reading?
A. Switch S1 is open.
B. Resistor R2 has a resistance value that's twice the value of either R1.
C. Switch S1 is closed.
D. Resistors R1 and R2 have equal resistance values.
10. In the circuit shown in Figure A-2 where R1 and R2 have equal resistance values, when switch S1 is closed, what voltage would you measure across R2 with your meter?
A. 0 V
B. 1 V
C. 3 V
D. 6 V
11. What important safety precaution must be observed when measuring resistance in an electronic circuit?
A. All power to the component under test must be disconnected.
B. The meter's highest resistance range setting should be used until the actual value is determined.
C. The black test lead must be connected to the chassis ground.
D. The red test lead must be at the most positive point in the circuit.
FIGURE A-3
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