Welcome to ECE Board Exam Practice Quiz for Electrical Circuit. This set of practice quiz 10 will test your competence on the theories, concepts and problem solving involving Electrical Circuit. The objectives and goals of this quiz is to help engineering students familiarize concepts and theories as well as develop problem solving skills when answering questions related to the Electrical Circuit.

Electrical Circuit Test Bank

In this section are compiled practice quiz for Electrical Circuit that could be able to enhance your knowledge and skills in your preparation for the ECE Board Exam. The goal is to add thousands of questions for you to be familiarized and hopefully help you to be prepared. I am looking forward that this practice quiz will give you an additional confidence in taking your upcoming Engineering Board Exam.

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Choose the letter of the best answer in each questions.

The energy stored in the magnetic field of the coil is 10 times the energy wasted in its resistance

The energy wasted in its resistance is 10 times the energy stored in the magnetic field of the coil

It is a low Q coil

It is a high Q coil

Correct!

Wrong!

What is the time constant for L of 240 mH in series with R of 20 Ω?

12 ms

4.8 s

83.3 s

12 s

Correct!

Wrong!

What is the purpose of a load in an electric circuit?

To increase the circuit current

To decrease the circuit current

To utilize electrical energy

To make the circuit complete

Correct!

Wrong!

An inductor carries 2 A dc. If its inductance is 100 μH, then what is its inductive reactance?

Zero

1.3 kΩ

628 Ω

-628 Ω

Correct!

Wrong!

The capacitance of a capacitor is ________ relative permittivity.

Directly proportional to

Inversely proportional to

Equal to

Inversely proportional to the square of

Correct!

Wrong!

Which of the following is a common material used in wire-wound resistors?

Manganin

Carbon

Bronze

German silver wire

Correct!

Wrong!

Refers to the outward-curving distortion of the lines of force near the edges of two parallel metal plates that form a capacitor.

Skin effect

Night effect

Edge effect

Hall effect

Correct!

Wrong!

What does a capacitor store?

Voltage

Charge

Current

Power

Correct!

Wrong!

What determines the magnitude of electric current?

The rate at which electrons are produced

The type of material used

The current carrying capacity of the circuit

The rate at which electrons pass a given point

Correct!

Wrong!

The reciprocal of a complex number is

A complex number

A real number

An imaginary number

A whole number

Correct!

Wrong!

When two coils of identical reactance are in parallel without mutual inductance, the reactance of the combination is _______ the reactance of each coil.

One half

Twice

Four times

One fourth

Correct!

Wrong!

Which of the following dielectric materials makes the lowest-capacitance capacitor?

Paper

Mica

Air

Electrolyte

Correct!

Wrong!

Inductive reactance applies only to sine waves because it

Increases with lower frequencies

Increases with lower inductance

Depends on the factor 2π

Decreases with higher frequencies

Correct!

Wrong!

The ratio between the active power and the apparent power of a load in an ac circuit is called

Quality factor

Power factor

Power ratio

Power reactive

Correct!

Wrong!

In a complex number 5 + j 10, 10 is called ______ part.

Imaginary

Real

Conjugate

Integer

Correct!

Wrong!

A linear circuit is one whose parameters

Change with change in voltage

Change with change in current

Do not change with voltage and current

Change with change in voltage and current

Correct!

Wrong!

Of the equivalent combination of units, which one is not equal to watt?

Ω^2/V

AV

A^2 Ω

J/s

Correct!

Wrong!

The result of rust in electrical (wire) connection is

Inductance

Conductance

Impedance

Resistance

Correct!

Wrong!

A lead conductor has a resistance of 25 Ω at 0˚C. Determine its resistance at -30˚C.

22 Ω

24 Ω

12 Ω

11 Ω

Correct!

Wrong!

Delta to wye or wye to delta transformation technique is applied to a _______ network.

One-terminal

Two-terminal

Three-terminal

Complex

Correct!

Wrong!

The rms value of a triangular or sawtooth waveform is _______ times its peak value.

0.577

0.500

0.25

0.707

Correct!

Wrong!

In dividing or multiplying phasor quantities, ________ form is used.

Polar

Rectangular

Trigonometric

Exponential

Correct!

Wrong!

How many degrees of phase represents one full cycle?

360°

180°

270°

90°

Correct!

Wrong!

The resistance of an insulator _______ when its temperature is increased.

Decreases

Remains the same

Increases

Varies

Correct!

Wrong!

In the 5-band method of capacitor color coding, the first band indicates

Temperature coefficient

Tolerance

1st digit

Capacitance value

Correct!

Wrong!

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Electrical Circuit – Quiz 10

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Questions and Answers in Electrical Circuit – PinoyBix