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.
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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
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
If three 9 mH inductors are connected in parallel without mutual inductance then the total inductance is
Which is considered as the effect of a dielectric material?
Reducing the working voltage
Increasing the distance between the plates
What capacitance exists not through design but simply because two conducting surfaces are relatively close to each other?
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.
An open inductor has
Zero resistance and infinite inductance
Infinite resistance and zero inductance
Infinite resistance and infinite inductance
Zero resistance and zero inductance
If a capacitor is rated for 200V dc, what is its effective ac working voltage?
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
In liquids and gases, ionization current results from a flow of
Positive or negative ions
Ions that are lighter in weight than electrons
A series RLC circuit has a __________ power factor at its half-power points
Either Leading or Lagging
A gang capacitor is a variable capacitor in which capacitance is varied by changing the
Number of plates
Distance between plates
What is the other name of relative permittivity?
Specific inductance capacity
What is the half-power bandwidth of a parallel resonant circuit which has a resonant frequency of 3.6 MHz and Q of 218?
Transient period is considered over after
At what frequency will an inductor of 5mH have the same reactance as a capacitor of 0.1 μF?
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.
What is the temperature coefficient of the resistance Eureka?
Series resonance occurs when
XL = XC
XL = R
Z = R
Both XL = XC and Z = R
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
The ratio of W/VA in an ac circuit means
Conventional flow assumes charges flow from
Positive to negative
Positive to positive
Negative to positive
Negative to negative
A tank circuit is a
Parallel LC circuit
Series LC circuit
A resonant circuit
A non-resonant circuit
Resistor with colored bands in the body
The value of temperature coefficient (α) is dependent upon