# Basic Electronics Engineering - Electronic Engineering (MCQ) questions & answers

Dear Readers, Welcome to Basic Electronics Engineering multiple choice questions and answers with explanation. These objective type Basic Electronics Engineering questions are very important for campus placement test, semester exams, job interviews and competitive exams like GATE, IES, PSU, NET/SET/JRF, UPSC and diploma.

Specially developed for the Electronic Engineering freshers and professionals, these model questions are asked in the online technical test and interview of many companies.

These tutorial are also important for your viva in university exams like Anna university, Pune, VTU, UPTU, CUSAT etc.

1)   What is the major functioning role of VVR in the multistage AGC amplifier circuit during an increment in the signal level?
- Published on 30 Oct 15

a. Variation in control of input signal level
b. Variation in voltage gain of multistage amplifier
c. Variation in current gain of multistage amplifier
d. Variation in control of output signal level
 Answer  Explanation  Related Ques ANSWER: Variation in voltage gain of multistage amplifier Explanation: No explanation is available for this question!

2)   The rectified & filtered signal taken at a high level point in AGC amplifier generates _______.
- Published on 30 Oct 15

a. dc voltage proportional to the level of an output signal
b. dc voltage proportional to the level of an input signal
c. ac voltage proportional to the level of output signal
d. ac voltage proportional to the level of an input signal
 Answer  Explanation  Related Ques ANSWER: dc voltage proportional to the level of an output signal Explanation: No explanation is available for this question!

3)   How does the FET operate before the pinch-off region with small value of drain-to-source voltage in accordance to the control of drain-to-source resistance by the bias voltage?
- Published on 30 Oct 15

a. As a Voltage Controlled Resistor
b. As a Voltage Dependent Resistor
c. As a Voltage-Variable Resistor
d. All of the above
 Answer  Explanation  Related Ques ANSWER: All of the above Explanation: No explanation is available for this question!

4)   How are the zener diodes placed internally in MOSFETs so as to provide defence from the hazardous consequences of stray voltages?
- Published on 30 Oct 15

a. Alternately
b. Opposite to each other
c. Back-to-back
d. All of the above
 Answer  Explanation  Related Ques ANSWER: Back-to-back Explanation: No explanation is available for this question!

5)   FETs are widely applicable in oscilloscopes and voltmeters as an input amplifier as compared to bipolar transistors due to ______.
- Published on 30 Oct 15

a. ability of minimizing the loading effect with high input resistance
b. ability of maximizing the loading effect with high input resistance
c. ability of minimizing the loading effect with low input resistance
d. ability of maximizing the loading effect with low input resistance
 Answer  Explanation  Related Ques ANSWER: ability of minimizing the loading effect with high input resistance Explanation: No explanation is available for this question!

6)   Which mode is produced by a positive swing in gate-to-source voltage by input ac signal with the maximum voltage drop across load resistor in DE-MOSFET amplifier circuit?
- Published on 30 Oct 15

a. Depletion mode with decrease in drain current
b. Enhancement mode with decrease in drain current
c. Depletion mode with an increase in drain current
d. Enhancement mode with an increase in drain current
 Answer  Explanation  Related Ques ANSWER: Enhancement mode with an increase in drain current Explanation: No explanation is available for this question!

7)   What is the computational the value of drain current for gate-to-source voltage (VGS) of about 6V in the below drawn schematic diagram of E-MOSFET along with ID(ON) = 2mA at VGS & VGS(threshold) of about 12V & 4V respectively?

- Published on 30 Oct 15

a. 1 mA
b. 2 mA
c. 3 mA
d. 4 mA
 Answer  Explanation  Related Ques ANSWER: 2 mA Explanation: No explanation is available for this question!

8)   How is the layer of P-substrate, that intimate the provision of channel for electrons by touching substrate to metal -oxide film with the semantic behaviour of N-channel, can be referred as?
- Published on 30 Oct 15

a. N-type Inversion layer
b. P-type Inversion layer
c. Both a & b
d. None of the above
 Answer  Explanation  Related Ques ANSWER: N-type Inversion layer Explanation: No explanation is available for this question!

9)   The input current of JFET and MOSFET are basically the leakage currents of  ______ & ______ respectively
- Published on 30 Oct 15

a. forward-biased PN junction & capacitor
b. reversed-biased PN junction & capacitor
c. forward-biased PN junction & inductor
d. reversed-biased PN junction & inductor
 Answer  Explanation  Related Ques ANSWER: reversed-biased PN junction & capacitor Explanation: No explanation is available for this question!

10)   Which action plays a significant role in enhancing the conductivity of channel by inducing the free electrons especially in enhancement mode of N-channel MOSFET?
- Published on 30 Oct 15

a. Inductor action
b. Capacitor action
c. Resistive action
d. Filter action
 Answer  Explanation  Related Ques ANSWER: Capacitor action Explanation: No explanation is available for this question!

1 2 3 4 5 6 7 8 9 10 ...