Welcome to ECE Board Exam Practice Quiz for Electrical Circuit. This set of practice quiz 3 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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In an ac circuit with a resistive branch and an inductive branch in parallel, the
Voltage across the inductance leads the voltage across the resistance by 90°
Resistive branch current is 90° out of phase with the inductive branch current
Resistive and inductive branch currents have the same phase
Resistive and inductive branch currents are 180° out-of-phase
At parallel resonance, the currents flowing through L and C are
What is the resonant frequency of a circuit when L of 25 microhenrys and C of 10 picofarads are in parallel?
Permeability is otherwise known as
Which of the following is not a factor affecting dielectric strength?
Which component opposes voltage change?
In an inductive coil, the rate of rise of current is maximum
Near the final maximum value of current
At mid-value of current
At half-power points
After one time constant
The ohmic value of a resistor with negative temperature coefficient
Increases with increasing temperature
Increase with decreasing temperature
Stays unchanged with temperature change
Stays unaffected even with increasing temperature
Leakage resistance in a capacitor results into
Shorter useful life
A trigger circuit consisting of a capacitor of 0.01 μF is connected in series with a resistor. If the circuit requires 100 Vdc to operate, determine the value of the resistor when time constant is 0.009 s.
In an RL series circuit,
Current lags voltage by less than 90˚
Current lags voltage by 180˚
Current lags voltage by 90˚
Current leads voltage by 90˚
Loop currents should be assumed to flow in which direction
Either Clockwise or Counter-clockwise
The reason why electrical appliances are connected in parallel.
It is a simple circuit
This makes the operation of appliances independent with each other
This results in reduced power consumption
All of these
Which of the following is the most popular waveform?
A capacitance of 6 µµF means
Which of the following elements is active?
Ideal voltage source
The internal resistance of an ideal current source is
Equal to the load resistance
To be determined
An alloy composed of 84 % copper, 12 % manganese and 4 % nickel.
German silver wire
Which of the following is not considered a physical factor affecting resistance?
Effects of capacitance
It opposes any change in the amount of voltage
Voltage is lagged behind the current by a quarter cycle
Electric energy is stored in the capacitor in the form of electrostatic field
All of these
An inductance of 1 mH is
The unit of elastance is
The charge in the capacitor is stored at the
For a series circuit, the higher the quality factor
The greater the bandwidth
The narrower the passband
The broader the resonance curve
The wider the passband
What refers to such work at very low temperatures, near absolute zero?