Welcome to ECE Board Exam Practice Quiz for Electrical Circuit. This set of practice quiz 9 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.
PREVIOUS: Electrical Circuit Practice Quiz 08
Barium-strontium titanite dielectric material is also called
Ceramic
Polyster
Electrolytic
Bakelite
Correct!
Wrong!
The power factor of a circuit is equal to
RZ
XC/Z
XL/Z
R/Z
Correct!
Wrong!
What increases the resistance of wire at high frequencies?
Temperature
Voltage
Skin effect
Insulation
Correct!
Wrong!
If voltage across the plates of 2 F capacitor is increased by 4 V, then charge on the plates will
Decrease by 2 C
Increase by 2 C
Decrease by 4 C
Increase by 4 C
Correct!
Wrong!
What is the most convenient way of achieving large capacitance?
By using multi-plate construction
By using air as dielectric
By decreasing distance between plates
By using dielectric of low permittivity
Correct!
Wrong!
For a linear circuit, _______ voltage or current is used to calculate average power.
RMS
Peak
Average
Instantaneous
Correct!
Wrong!
The wavelength of an alternating waveform depends upon the _______ of the variation.
Period
Number
Frequency
Amplitude
Correct!
Wrong!
Which of the following is also known as anti-resonant circuit?
Parallel resonant circuit
Series resonant circuit
Tuned circuit
Tank circuit
Correct!
Wrong!
The distance between the capacitor plates increases two times, then its capacitance
Increases two times
Increases four times
Decreases two times
Decreases four times
Correct!
Wrong!
In adding or subtracting phasor quantities, ________ form is the most convenient.
Polar
Rectangular
Trigonometric
Exponential
Correct!
Wrong!
For greater accuracy, the value of phase angle θ should be determined from
Cos θ
Tan θ
Sin θ
Sec θ
Correct!
Wrong!
If one resistance in a series connection is open, then
The current is zero in all the other resistances
The current is maximum in all the other resistances
The voltage is zero across the open resistance
The voltage is infinite across the open resistance
Correct!
Wrong!
Which of the following has negative temperature coefficient?
Carbon
Nickel
Brass
Constantan
Correct!
Wrong!
For a carbon composition resistor, typical resistance values range from
2.7 Ω to 22 MΩ
1000 Ω to 10000 Ω
10 Ω to 10 MΩ
2.7 Ω to 2.7 GΩ
Correct!
Wrong!
The mutual inductance between two coils is ________ the reluctance of magnetic path.
Directly proportional to
Inversely proportional to
Independent to
Equal to
Correct!
Wrong!
When the power factor of a circuit is zero,
Power absorbed is maximum
Power absorbed is minimum
Power absorbed is zero
The impedance is minimum
Correct!
Wrong!
Which of the following does not generally affect the value of a capacitor?
The dielectric material used
The surface area of the plates
The thickness of the dielectric
The voltage applied to the plate
Correct!
Wrong!
If a multi-plate capacitor has 10 plates, each of area 10 cm2, then
10 capacitors will be in parallel
10 capacitors will be in series
9 capacitors will be in parallel
9 capacitors will be in series
Correct!
Wrong!
In an ac circuit, the power dissipated as heat depends on
Impedance
Capacitive reactance
Resistance
Inductive reactance
Correct!
Wrong!
Which of the following is a disadvantage of a wire-wound resistor?
It has reactance in radio-frequency circuits
It cannot handle much power
It draws a large amount of current
It cannot handle high voltage
Correct!
Wrong!
The presence of an electric current is made known by
Electric shock
Effects produced
Magnetic shock
Flashing
Correct!
Wrong!
What is the rms value of a square wave?
Equals its peak value
Equals its peak-to-peak value
Peak divided by square root of two
Peak divided by pi
Correct!
Wrong!
The power factor of a certain circuit in which the voltage lags behind the current is 80%. To increase the power to 100%, it is necessary to add ________ to the circuit.
Inductance
Capacitance
Resistance
Impedance
Correct!
Wrong!
In a multiple capacitor, the plate area is
Increased
The same
Decreased
Variable
Correct!
Wrong!
An impedance given by 90∠-45˚ is a/an __________ impedance.
Inductive
Conductive
Resistive
Capacitive
Correct!
Wrong!
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Electrical Circuit – Quiz 09
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