Electrical Circuit Practice Quiz 08

Electrical Circuit Practice Quiz 08

Welcome to ECE Board Exam Practice Quiz for Electrical Circuit. This set of practice quiz 8 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.

Guidelines:
  • Read and understand each question before choosing the best answer.
  • The correct answer will be reveal after you have chosen your answer for every questions
  • There is no time limit, answer the questions at your own pace.
  • Once all questions are answered, you will be shown your rating.
  • You have to get 70% of the total items to pass the quiz.
  • You can re-take the quiz as many times as you want or until you are satisfied of your rating.
  • Comment us your thoughts, scores, ratings, and questions about the quiz in the comments section below!

Choose the letter of the best answer in each questions.

Which of the following is a way of decreasing mutual inductance?
Moving the coils closer
Moving the coils apart
Decreasing the number of turns of either coil
Increasing the number of turns of either coil

Correct!

Wrong!

Which of the following capacitors is suitable for dc filter circuits?
Mica
Ceramic
Paper
Electrolytic

Correct!

Wrong!

In a complex resistance-reactance plane, XL is represented
By an axis opposite the R axis
By an axis perpendicular to the XC axis
By an axis opposite the XC axis
By an axis parallel to the R axis

Correct!

Wrong!

A term used to express the amount of electrical energy stored in electrostatic field.
Joules
Coulombs
Watts
Electron-volt

Correct!

Wrong!

For a triangular and sawtooth waveform the rms voltage or current equals
0.707 times peak value
0.577 times peak value
0.577 times average value
0.707 times rms value

Correct!

Wrong!

Refers specifically to steady state values of quantities in ac circuits which are complex numbers.
Domain
Scalar quantity
Vector quantity
Phasor quantity

Correct!

Wrong!

The factor 0.707 for converting peak to rms applies only to
Square waves
Triangle waves
Sawtooth waves
Sine waves

Correct!

Wrong!

A capacitor consists of two
Conductors only
Dielectric only
Conductors separated by a dielectric
Dielectric separated by a conductor

Correct!

Wrong!

In an ac wave, 30 degrees of phase is ______ of a cycle.
½
1/12
1/3
1/30

Correct!

Wrong!

The electric field strength between capacitor plates has a unit of
Volts per meter
Volts per mil
Amperes per meter
Amperes per mil

Correct!

Wrong!

The capacitor opposes any change in voltage across it by
Passing a voltage proportional to the rate of change of current
Acting as a short circuit at time equal to zero
Passing a current proportional to the rate of change of voltage
Acting as a short circuit at time equal to infinity

Correct!

Wrong!

Capacitance increase with
Larger plate area and less distance between plates
Larger plate area and greater distance between plates
Smaller plate area and less distance between plates
Higher values of applied voltage

Correct!

Wrong!

Which of the following is a preferred resistor value?
520
47
43,000
54,321

Correct!

Wrong!

The usual load of a dc circuit is a/an
Resistor
Capacitor
Inductor
Both inductor and capacitor

Correct!

Wrong!

The Q-factor of a parallel resonant circuit is also known as
Voltage magnification factor
Current magnification factor
Gain magnification factor
Resonance magnification factor

Correct!

Wrong!

Which of the following materials has the lowest dielectric strength?
Glass
Paper
Mica
Teflon

Correct!

Wrong!

When frequency of an ac wave decreases, the value of XL in a coil
Approaches zero
Gets larger positively
Gets larger negatively
Stays constant

Correct!

Wrong!

The curve between current and frequency is termed as
Voltage curve
Gain curve
Power curve
Resonance curve

Correct!

Wrong!

What can be used to estimate resonant frequency and to find reactance at any frequency for any value of capacitor or inductor?
Smith chart
Reactance chart
Impedance chart
Resonance chart

Correct!

Wrong!

The temperature coefficient of resistance of electrolytes is
Negative
Positive
Zero
Infinite

Correct!

Wrong!

For a series AC circuit, _________ is not used as a reference phasor.
Voltage
Impedance
Current
Conductance

Correct!

Wrong!

A capacitance of 0.05 μF equals
0.05 x 10^6 F
0.05 x 10^-6 F
0.05 x 10^-12 F
0.05 x 10^12 F

Correct!

Wrong!

What is the reciprocal of capacitance?
Reluctance
Susceptance
Elastance
Conductance

Correct!

Wrong!

What maximum voltage can be applied across the capacitor for very short period of time?
Working voltage
Surge voltage
Stray voltage
Peak voltage

Correct!

Wrong!

Liquids that are good conductors because of ionization are called
Electrolytic
Bases
Acid
Electrolytes

Correct!

Wrong!

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Electrical Circuit – Quiz 08

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