Welcome to ECE Board Exam Practice Quiz for Electrical Circuit. This set of practice quiz 2 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 01
In a resonant circuit, if Q ≥ 10 resonant frequency __________ bandwidth.
Bisects
Exceeds
Is less than
Is equal to
Correct!
Wrong!
Kirchhoff’s laws (KCL and KVL) are applicable to
DC circuits
AC circuits
DC as well as AC circuits
Passive networks alone
Correct!
Wrong!
What is the reciprocal of quality factor?
Power factor
Reactive factor
Dissipation factor
1/Q factor
Correct!
Wrong!
The open-circuit voltage at the terminal of load RL is 60V. Under the condition of maximum power transfer, the load voltage will be
60 V
15 V
20 V
30 V
Correct!
Wrong!
The voltage lags the current by cycle in a
Purely resistive circuit
Purely inductive circuit
Purely capacitive circuit
Circuit containing resistance, capacitance and inductance
Correct!
Wrong!
In an ac circuit with inductive reactance, the
Phase angle of the circuit is always 45˚
Voltage across the inductance must be 90˚ out-of-phase with the applied voltage
Current through the inductance lags its induced voltage by 90˚
Current through the inductance and voltage across it are180˚ out-of-phase
Correct!
Wrong!
If resonant frequency is 10 kHz and quality factor is 50, then
Bandwidth is 200 Hz
XL = is 50,000 Ω
R is 50 Ω
XC = is 50,000 Ω
Correct!
Wrong!
The symbol Q refers to
Resonance quotient
Quality factor
Power quotient
Qualification test
Correct!
Wrong!
In a series RLC circuit
The current lags VL by 90˚
The current leads VL by 90˚
XL leads Xc by 90˚
Z = jXL at resonance
Correct!
Wrong!
The current is ____________ times the maximum current at half-power points of a resonance curve.
0.707
1.414
0.5
0.632
Correct!
Wrong!
At what frequency will the current in a series RLC circuit reach its maximum value for an applied voltage of 15 V with R = 500 Ω, L = 100 μH and C = 0.001 μF?
503 kHz
403 kHz
603 kHz
303 kHz
Correct!
Wrong!
What is the specific resistance of a pure germanium?
55 Ω-cm
55 Ω-m
55 Ω-mm
55 kΩ-m
Correct!
Wrong!
What is the peak factor of a triangular wave?
1.16
1.73
1.41
1.11
Correct!
Wrong!
What rating of a resistor determines its ability to absorb heat?
Wattage
Ohmic
Current
Voltage
Correct!
Wrong!
VL = VC in a series RLC circuit when
The value of the impedance is minimum
The power factor is zero
The current leads the total voltage by 90˚
The total voltage is zero
Correct!
Wrong!
A capacitive load always has a ________ power facto
Leading
Lagging
Zero
Unity
Correct!
Wrong!
An intermittent and non-symmetrical alternating current like that obtained from the secondary winding of an induction coil.
Faradic current
Transient ac current
Inductive current
Capacitive current
Correct!
Wrong!
Electron flow assumes charges flow from
Negative to positive
Negative to negative
Positive to negative
Positive to positive
Correct!
Wrong!
Property of an electric circuit that dissipates electric energy
Reactance
Impedance
Resistance
Conductance
Correct!
Wrong!
In a series RLC circuit
Increasing the frequency decreases the resistance
Increasing the frequency increases the resistance
Both XL and XC change as frequency changes
Impedance will always decrease
Correct!
Wrong!
The average value of a triangular or sawtooth wave is __________ times its peak value.
0.577
0.500
0.318
0.637
Correct!
Wrong!
What is considered as the most important value of a sine wave?
Effective value
Peak value
Average value
Instantaneous value
Correct!
Wrong!
What is the reading of an ohmmeter for a shorted capacitor?
Zero
Infinity
kΩ
MΩ
Correct!
Wrong!
Which one of the following elements serves as a protection against overload?
Fuse
Switch
Resistor
Relay
Correct!
Wrong!
As applied to a series RLC circuit, bandwidth means
The frequency range for maximum power transfer
The difference between the highest and lowest frequencies of the oscillator
The separation of the half-power points
The frequency at which XL = XC
Correct!
Wrong!
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Electrical Circuit – Quiz 02
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