Welcome to ECE Board Exam Practice Quiz for Electrical Circuit. This set of practice quiz 1 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.
Two capacitors of capacitance 9 μF and 18 μF in series will have a total capacitance of
27 μF
162 μF
6 μF
180 μF
Correct!
Wrong!
What is the other name of relative permittivity?
Dielectric strength
Potential gradient
Breakdown voltage
Specific inductance capacity
Correct!
Wrong!
A gang capacitor is a variable capacitor in which capacitance is varied by changing the
Dielectric
Number of plates
Plate area
Distance between plates
Correct!
Wrong!
A series RLC circuit consists of a 10 Ω resistor in series with L = 10 μH, and C = 100 μF. Determine a new value of I, for which the resonant frequency is one-half the original value.
40 μH
40 mH
40 pH
40 nH
Correct!
Wrong!
An ac series circuit is composed of a resistance of 20 Ω, inductive reactance of 40 Ω, and a capacitive reactance of 15 Ω. If a current of 1 ampere is flowing, what is the applied voltage
320 V
32 V
220 V
22 V
Correct!
Wrong!
If a capacitor is rated for 200V dc, what is its effective ac working voltage?
50 V
100 V
200 V
400 V
Correct!
Wrong!
If three 9 mH inductors are connected in parallel without mutual inductance then the total inductance is
3 mH
9 mH
27 mH
18 mH
Correct!
Wrong!
Conventional flow assumes charges flow from
Positive to negative
Positive to positive
Negative to positive
Negative to negative
Correct!
Wrong!
Transient period is considered over after
5
1
100
6
Correct!
Wrong!
What is the half-power bandwidth of a parallel resonant circuit which has a resonant frequency of 3.6 MHz and Q of 218?
1.65 kHz
16.5 MHz
16.5 kHz
165 kHz
Correct!
Wrong!
Which of the following conditions is not true for a series RLC circuit at resonance?
Z = jXL
XL = XC
The power factor is one
The magnitude of Z is
Correct!
Wrong!
Series resonance occurs when
XL = XC
XL = R
Z = R
Both XL = XC and Z = R
Correct!
Wrong!
What is the temperature coefficient of the resistance Eureka?
Infinity
Negative
Almost zero
Positive
Correct!
Wrong!
Resistor with colored bands in the body
Wire-wound resistor
Carbon-composition resistor
Potentiometer
Rheostat
Correct!
Wrong!
An open inductor has
Zero resistance and infinite inductance
Infinite resistance and zero inductance
Infinite resistance and infinite inductance
Zero resistance and zero inductance
Correct!
Wrong!
Which statement is true?
A series resonant circuit is of high impedance
A parallel resonant circuit is of low impedance
A series resonant circuit is inductive if it operates at a frequency higher than the resonant frequency
A parallel resonant circuit is inductive if it operates at a frequency higher than the resonant frequency
Correct!
Wrong!
Which is considered as the effect of a dielectric material?
Increasing capacitance
Decreasing capacitance
Reducing the working voltage
Increasing the distance between the plates
Correct!
Wrong!
At what frequency will an inductor of 5mH have the same reactance as a capacitor of 0.1 μF?
7.12 kHz
7.12 Hz
7.12 MHz
7.12 GHz
Correct!
Wrong!
A series RLC circuit has a __________ power factor at its half-power points
Unity
Leading
Lagging
Either Leading or Lagging
Correct!
Wrong!
In liquids and gases, ionization current results from a flow of
Positive or negative ions
Free electrons
Ions that are lighter in weight than electrons
Protons
Correct!
Wrong!
The ratio of W/VA in an ac circuit means
Power factor
Reactive factor
Quality factor
Load factor
Correct!
Wrong!
The value of temperature coefficient (α) is dependent upon
The nature of material and temperature
The length of material
The cross-sectional area of the material
The volume of the material
Correct!
Wrong!
A tank circuit is a
Parallel LC circuit
Series LC circuit
A resonant circuit
A non-resonant circuit
Correct!
Wrong!
What capacitance exists not through design but simply because two conducting surfaces are relatively close to each other?
Surge
Stray
Natural
Normal
Correct!
Wrong!
If two equal resistances connected in series across a certain supply are now connected in parallel across the same supply, the power produced will be _________ that of series connection.
One-half
One-fourth
Two times
Four times
Correct!
Wrong!
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Electrical Circuit – Quiz 01
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