# Online Electrical Engineering Test - Electrical Engineering Test - Random

Instruction:

- This is a FREE online test. Beware of scammers who ask for money to attend this test.
- Total number of questions:
**20**. - Time allotted:
**30**minutes. - Each question carries 1 mark; there are no negative marks.
- DO NOT refresh the page.
- All the best!

#### Marks : 2/20

Total number of questions

20

Number of answered questions

0

Number of unanswered questions

20

##### Test Review : View answers and explanation for this test.

1.

A free electron is a valence electron that has broken away from its parent atom.

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Learn more problems on : Voltage, Current and Resistance

2.

The atomic number is the number of neutrons in the nucleus.

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Learn more problems on : Voltage, Current and Resistance

3.

The formula to find

*I*when the values of*V*and*R*are known isYour Answer: Option

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Learn more problems on : Ohm's Law

4.

A series circuit consists of three resistors. Two resistors are 1.2 k each. The total resistance is 12 k. The value of the third resistor

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Learn more problems on : Series Circuits

5.

The term

*series opposing*means that sources are in series with opposite polarities.Your Answer: Option

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Learn more problems on : Series Circuits

6.

A 470 resistor, a 220 resistor, and a 100 resistor are all in parallel. The total resistance is approximately

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Explanation:

1/R = (1/470 + 1/220 + 1/100)

R = 59.98 ohm

R = 59.98 ohm

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Learn more problems on : Parallel Circuits

7.

Two 1.2 k resistors are in series and this series combination is in parallel with a 3.3 k resistor. The total resistance is

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Learn more problems on : Series-Parallel Circuits

8.

What is the current through

*R*_{2}?Your Answer: Option

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Learn more problems on : Branch, Loop and Node Analyses

9.

When the current through the coil of an electromagnet reverses, the

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Learn more problems on : Magnetism and Electromagnetism

10.

The instantaneous value is the voltage or current value of a waveform at its peak.

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Learn more problems on : Alternating Current and Voltage

11.

The winding resistance of a coil can be increased by

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Learn more problems on : Inductors

12.

The inductance of an iron-core coil decreases if

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Learn more problems on : Inductors

13.

Energy is stored by an inductor in an electrostatic field.

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Learn more problems on : Inductors

14.

A 47 resistor and a capacitor with a capacitive reactance of 120 are in series across an ac source. What is the circuit impedance,

*Z*?Your Answer: Option

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Learn more problems on : RC Circuits

15.

When the frequency of the source voltage decreases, the impedance of a parallel

*RC*circuitYour Answer: Option

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Learn more problems on : RC Circuits

16.

A lower

*Q*produces a narrower bandwidth.Your Answer: Option

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Learn more problems on : RLC Circuits and Resonance

17.

Norton's theorem gives

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Learn more problems on : Circuit Theorems in AC Analysis

18.

Determine

*V*_{TH}for the circuit external to*R*in the given figure._{L}Your Answer: Option

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Learn more problems on : Circuit Theorems in AC Analysis

19.

Referring to the given circuit, what is

*Z*_{TH}if*R*_{1}is changed to 220 ?Your Answer: Option

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Learn more problems on : Circuit Theorems in AC Analysis

20.

A balanced load is one in which all the impedances are equal.

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Learn more problems on : Three-Phase Systems in Power Applications

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