Welcome to ECE Board Exam Practice Quiz for Electronic Circuits. This set of practice quiz 7 will test your competence on the theories, concepts and problem solving involving Electronic Circuits. 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 Electronic Circuits.
Electronic Circuits Test Bank
In this section are compiled practice quiz for Electronic Circuits 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.
The stability of a regulated power supply is equivalent to
change of output voltage over the change in supply voltage
change in supply voltage over the change of output voltage
product of the output voltage and supply voltage
the difference of an output voltage to its supply voltage
What is the maximum collector efficiency of class B?
What type of oscillator which is composed of one or more amplifying devices with some frequency determining networks introducing positive feedback at a particular frequency so that oscillation is sustained at that frequency?
Sine wave oscillator
The power input to a power amplifier is ______ quantity.
The frequency of the ripple voltage at the output of a full-wave rectifier at 60 cycles.
The operating point in a transistor amplifier moves along ______ when an ac signal is applied.
dc load line
ac load line
both dc and ac load lines
Class B operation has a maximum possible frequency of ______ percent.
In an LC circuit, when the capacitor energy is maximum, the inductor energy is
Half-way between maximum and minimum
To sustain oscillations, the power gain of the amplifier may be
Between 0.1 and 0.5
Any value form 0.5 upward
Equal to or greater than 1
If you move towards an oscillating circuit, its frequency changes because of
Movement of the body
Noise of foot
In an LC oscillator, if the value of L is increased four times, then the frequency of oscillation is
Decreased 2 times
Decreased 4 times
Increased 2 times
Increased 4 times
The output signal of CE amplifier is always
Out of phase with the input signal
Equal to the input signal
In phase with the input signal
Larger than the input signal
Which is a fixed-frequency oscillator
Which of the following is NOT an oscillator requirement?
Which of the following amplifier below is a choice when higher power gain is a requirement?
Feedback circuit usually employs _______ network
In a Colpitt’s oscillator, feedback is obtained
By magnetic induction
By a tickler coil
From the center of split capacitors
From the center of split inductors
In an LC oscillator, the frequency of oscillations is given by
Quartz crystal is most commonly used in crystal oscillators because.
It is easily available
It has superior electrical properties
It is quite inexpensive
It is very rugged
What is the phase difference between the output and the input voltage of a CE amplifier?
The number of transistor in a single stage amplifier is
What is the phase difference between voltage across collector load and signal voltage in a common emitter amplifier?
One of the items below is a characteristic of cascaded amplifiers?