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.
Guidelines:
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- 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.
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Choose the letter of the best answer in each questions.
PREVIOUS: Electrical Circuit Practice Quiz 09
If a coil has a Q of 10, it means that
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!
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!
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 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!
Which of the following is a common material used in wire-wound resistors?
Manganin
Carbon
Bronze
German silver wire
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 rms value of a triangular or sawtooth waveform is _______ times its peak value.
0.577
0.500
0.25
0.707
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!
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!
Delta to wye or wye to delta transformation technique is applied to a _______ network.
One-terminal
Two-terminal
Three-terminal
Complex
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!
The reciprocal of a complex number is
A complex number
A real number
An imaginary number
A whole number
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!
Of the equivalent combination of units, which one is not equal to watt?
Ω^2/V
AV
A^2 Ω
J/s
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!
Which of the following dielectric materials makes the lowest-capacitance capacitor?
Paper
Mica
Air
Electrolyte
Correct!
Wrong!
In the 5-band method of capacitor color coding, the first band indicates
Temperature coefficient
Tolerance
1st digit
Capacitance value
Correct!
Wrong!
The resistance of an insulator _______ when its temperature is increased.
Decreases
Remains the same
Increases
Varies
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!
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!
The capacitance of a capacitor is ________ relative permittivity.
Directly proportional to
Inversely proportional to
Equal to
Inversely proportional to the square of
Correct!
Wrong!
In a complex number 5 + j 10, 10 is called ______ part.
Imaginary
Real
Conjugate
Integer
Correct!
Wrong!
The result of rust in electrical (wire) connection is
Inductance
Conductance
Impedance
Resistance
Correct!
Wrong!
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Electrical Circuit – Quiz 10
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