Series-parallel Circuits Mcqs

This set of Electrical engineering Multiple Choice Questions & Answers (MCQs) focuses on study of “Series-parallel Circuits ”. These questions are chosen from a collection of most authoritative and best reference books on Electrical engineering. Our aim is to prepare an individual for competitive exams like NTS, GAT, ECAT, University and College entrance exams, Jobs and interviews. One should practice our MCQS to assimilate Series-parallel Circuits comprehensively.

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1.
The first goal to accomplish in analyzing a complex series-parallel circuit is to____________?

Solve for all the voltage drops

Solve for the total current and resistance

Equate all series components

Equate all parallel components

2.
The positive (+) and negative (-) ends of the battery are called ___________?

Circuit diagram

Battery knobs

Battery terminals

Battery sides

3.
When a Wheatstone bridge is in a balanced condition, the center voltmeter in the bridge will read_____________?

Twice the source voltage

Half the source voltage

Zero volts

The same as the source voltage

4.
In a series–parallel circuit, individual component power dissipation are calculated using_____________?

Individual component parameters

A percent of the total power depending on resistor ratios

Total current squared multiplied by the resistor values

A percent of the voltage division ratio squared

5.
In a series–parallel circuit consisting of R1 and R2 in series and connected in parallel with R3, if R1 opens, then R2‘s voltage will:___________?

Increase

Remain the same

Decrease

Cannot tell

6.
The current flowing through an unloaded voltage divider is called the____________?

Bleeder current

Load current

Resistor current

Voltage current

7.
With 21 V applied, if R1 = 5 ohms, R2 = 35 ohms, and R3 = 14 ohms, what is the current of R2 if R1 is series connected with parallel circuit R2 and R3?

200 mA

400 mA

600 mA

800 mA

8.
If R1 is in series with parallel connected to R2 and R3, what happens to total current if R2 opens?

Cannot tell

Remains the same

Increases

Decreases

9.
A Wheatstone bridge can be used to determine an unknown_____________?

Current

Voltage

Resistance

Power

10.
A device able to supply electrical energy is a __________?

Nonconductor

Battery

Conductor

Microwave

11.
A 6 V battery output is divided down to obtain two output voltages. Three 2.2 kΩ resistors are used to provide the two taps. The two output voltages are___________?

2 V, 4 V

2 V, 2 V

2 V, 6 V

4 V, 6 V

12.
The internal resistance of a 20,000 ohm/volt voltmeter set on its 5 V range is_____________?

20,000 Ω

100,000 Ω

200,000 Ω

1,000,000 Ω

13.
A certain voltage divider consists of three 1 kΩ resistors in series. Which of the following load resistors will have the least effect on the output voltage?

1 MΩ

100 kΩ

1 kΩ

330 Ω

14.
Two 1.2 kΩ resistors are in series and this series combination is in parallel with a 3.3 kΩ resistor. The total resistance is____________?

138 Ω

1,389 Ω

5,700 Ω

880 Ω

15.
A certain voltage divider consists of two 12 kΩ resistors in series. Which of the following load resistors will have the most effect on the output voltage?

1 MΩ

24 kΩ

18 kΩ

12 kΩ

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