AUTOMATION SYSTEM QUIZ

A 12 k resistor, a 15 k resistor, and a 22 k resistor are in series with two 10 k resistors that are in parallel. The source voltage is 75 V. Current through the 15 k resistor is approximately

1.4 mA

5 mA

14 mA

50 mA

TRUE ANSWER : ?
YOUR ANSWER : ?

In a certain five-step R/2R ladder network, the smallest resistor value is 1 k. The largest value is

2 k

10 k

20 k

indeterminable

TRUE ANSWER : ?
YOUR ANSWER : ?

A voltage divider consists of two 100 k resistors and a 12 V source. What will the output voltage be if a load resistor of 1 M is connected to the output?

0.57 V

6 V

5.7 V

12 V

TRUE ANSWER : ?
YOUR ANSWER : ?

A certain voltage divider consists of two 12 k resistors in series. Which of the following load resistors will have the most effect on the output voltage?

18 k

12 k

1 M

24 k

TRUE ANSWER : ?
YOUR ANSWER : ?

A voltage divider consists of two 68 k resistors and a 24 V source. The unknown output voltage is

0 V

12 V

6 V

24 V

TRUE ANSWER : ?
YOUR ANSWER : ?

On which of the following voltage range settings will a voltmeter present the minimum load on a circuit?

50 V

500 V

1,000 V

1 V

TRUE ANSWER : ?
YOUR ANSWER : ?

The parallel combination of a 470 resistor and a 1.2 k resistor is in series with the parallel combination of three 3 k resistors. A 200 V source is connected across the circuit. The resistor with the most current has a value of

470

3 k

1.2 k

470 or 1.2 k

TRUE ANSWER : ?
YOUR ANSWER : ?

The parallel combination of a 470 resistor and a 1.5 k resistor is in series with the parallel combination of five 1 k resistors. The source voltage is 50 V. The percentage of the load current through any single 1 k resistor is

50%

100%

20%

25%

TRUE ANSWER : ?
YOUR ANSWER : ?

A certain voltage divider consists of three 1 k resistors in series. Which of the following load resistors will have the least effect on the output voltage?

1 k

1 M

330

100 k

TRUE ANSWER : ?
YOUR ANSWER : ?

The internal resistance of a 30,000 ohm/volt voltmeter set on its 50 V range is

15000000

15000

150000

1500000

TRUE ANSWER : ?
YOUR ANSWER : ?

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