MCQ Set 1- Electronics

Reviewed by Editorial Team
The ProProfs editorial team is comprised of experienced subject matter experts. They've collectively created over 10,000 quizzes and lessons, serving over 100 million users. Our team includes in-house content moderators and subject matter experts, as well as a global network of rigorously trained contributors. All adhere to our comprehensive editorial guidelines, ensuring the delivery of high-quality content.
Learn about Our Editorial Process
| By Satyajitclasses
S
Satyajitclasses
Community Contributor
Quizzes Created: 4 | Total Attempts: 4,021
| Attempts: 991
SettingsSettings
Please wait...
  • 1/12 Questions

    The popular IC 741 is

    • Voltage regulator
    • Comparator
    • Operational amplifier
    • Timer
Please wait...
About This Quiz


This is MCQ Test with 12 Questions. The evaluation of the test taken by a candidate will be provided on line after submission of the answer of last question. Duration of The Test- 18 minutes
**Note- This test is available only to authorized users.
This MCQ is created by
Satyajit's Classes
Mr. Satyajit Mukherjee
Tele- (+91)-9433123487 / (+91)-(033) - 25394855
Website- https://satyajit. Page4. Me
Email- satyajit. Classes@gmail. Com

Instructions
Once the test has started, do not press the refresh button (or F5 on your keyboard)
Once the test time is over, you will be awarded a grace duration to wrap up the test and "Submit" it.  
Ensure you are Internet connected when submitting.

MCQ Set 1- Electronics - Quiz

Quiz Preview

  • 2. 

    Which of the following was used for digital transmission?

    • PAM

    • PPM

    • PWM

    • PCM

    Correct Answer
    A. PCM
    Explanation
    PCM- Pulse Code Modulation

    Rate this question:

  • 3. 

    Modulation system employed in Audio broad cast of TV is

    • AM

    • PM

    • FM

    • PCM

    Correct Answer
    A. FM
    Explanation
    The modulation system employed in audio broadcast of TV is FM (Frequency Modulation). FM modulation is commonly used in broadcasting because it provides better sound quality compared to AM (Amplitude Modulation). FM modulates the frequency of the carrier signal with the audio signal, resulting in a varying frequency that corresponds to the audio waveform. This allows for a wider frequency range and less susceptibility to noise and interference, making it suitable for transmitting high-quality audio signals.

    Rate this question:

  • 4. 

    Super position theorem is NOT applicable to networks containing

    • Non linear elements

    • Dependant voltage sources

    • Dependant current sources

    • Transformers

    Correct Answer
    A. Non linear elements
    Explanation
    The superposition theorem is a method used to analyze linear circuits. It states that the response in any branch of a linear circuit can be determined by summing the responses caused by each individual source acting alone, while all other sources are turned off. Nonlinear elements, such as diodes or transistors, do not obey the principle of superposition, as their behavior is not linear. Therefore, the superposition theorem cannot be applied to networks containing nonlinear elements.

    Rate this question:

  • 5. 

    Common Base Configuration has

    • Low input resistance and low output resistance

    • Low input resistance and high output resistance

    • High input resistance and low output resistance

    • High input resistance and high output resistance

    Correct Answer
    A. Low input resistance and high output resistance
    Explanation
    The common base configuration in a transistor amplifier has low input resistance because the input signal is applied to the emitter terminal, which is heavily doped and has a low resistance. On the other hand, it has high output resistance because the output signal is taken from the collector terminal, which is lightly doped and has a high resistance. This configuration allows for voltage amplification and impedance matching between the low impedance source and high impedance load.

    Rate this question:

  • 6. 

    Modulation system employed in Video broad cast of TV is

    • AM

    • PM

    • FM

    • PCM

    Correct Answer
    A. AM
    Explanation
    AM- (Specifically Vestigial side band AM)

    Rate this question:

  • 7. 

    In a JFET gates are always –

    • Forward biased

    • Reverse biased

    • Unbiased

    • None

    Correct Answer
    A. Reverse biased
    Explanation
    In a JFET (Junction Field-Effect Transistor), the gates are always reverse biased. This means that the voltage applied to the gate terminal is lower than the voltage at the source terminal. This reverse bias creates a depletion region in the channel, reducing the flow of current. By reverse biasing the gate, the JFET can control the current flow between the source and drain terminals. Therefore, the correct answer is reverse biased.

    Rate this question:

  • 8. 

    Schering bridge is used to measure

    • Frequency

    • inductance

    • Capacitance

    • Mutual inductance

    Correct Answer
    A. Capacitance
    Explanation
    A Schering bridge is a type of bridge circuit that is specifically designed to measure capacitance. It is used to determine the unknown capacitance value by comparing it with a known standard capacitor. The bridge circuit is balanced when the ratio of the unknown capacitance to the known capacitance is equal to the ratio of the resistances in the bridge. This allows for accurate measurement of capacitance values. Therefore, the correct answer is capacitance.

    Rate this question:

  • 9. 

    A network contains linear resistors and ideal voltage sources. If values of all the resistors are doubled, then voltage across each resistor is

    • Halved

    • Doubled

    • Increase by 4 times

    • Remains the same

    Correct Answer
    A. Remains the same
    Explanation
    When the values of all the resistors in a network are doubled, the total resistance in the network also doubles. According to Ohm's law (V = IR), if the resistance doubles and the voltage remains the same, the current flowing through the resistors will be halved. Since the voltage across each resistor is directly proportional to the current flowing through it, and the current is halved, the voltage across each resistor will also remain the same. Therefore, the correct answer is "Remains the same."

    Rate this question:

  • 10. 

    RC Coupled amplifier with no Emitter bypass capacitor is an example of

    • Voltage series feedback

    • Voltage shunt feedback

    • Current series feedback

    • Current shunt feedback

    Correct Answer
    A. Current series feedback
    Explanation
    The correct answer is "Current series feedback." In an RC coupled amplifier with no emitter bypass capacitor, the output voltage is fed back to the input through a resistor in series with the input signal. This configuration is known as current series feedback, where the feedback signal is connected in series with the input signal. This type of feedback helps in stabilizing the gain and improving the linearity of the amplifier.

    Rate this question:

  • 11. 

    Human eye is most sensitive to?

    • Blue

    • Green

    • Red

    • Violet

    Correct Answer
    A. Green
    Explanation
    The human eye is most sensitive to the color green. This is because the human eye contains a higher number of green-sensitive cones compared to red or blue-sensitive cones. These cones are responsible for detecting color in the retina. Therefore, green light stimulates the cones more effectively, resulting in a higher sensitivity to green light.

    Rate this question:

  • 12. 

    With introduction of –ve feed back, the Gain – Bandwidth product of an amplifier

    • Becomes infinity

    • Decreases

    • Increases

    • Remains constant

    Correct Answer
    A. Remains constant
    Explanation
    Remains constant. Bandwidth increases by the same amount as reduction in
    gain (1+AB); So GBW product remains the same.

    Rate this question:

Quiz Review Timeline (Updated): Mar 22, 2023 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 22, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Jul 22, 2010
    Quiz Created by
    Satyajitclasses
Back to Top Back to top
Advertisement
×

Wait!
Here's an interesting quiz for you.

We have other quizzes matching your interest.