# BASIC ELECTRONICS QUESTIONS PDF

In the crystalline lattice structure of Si, the valence electrons of every Si atom are locked up in covalent bonds with the valence electrons of four neighboring Si. Electronics Engineering students need to face some Basic Electronics Questions whether they are preparing for an interview or viva voce. So, this article gives. Electronic Components: thoughts on “[LATEST] BASIC ELECTRONICS Questions and Answers pdf”. Engineering interview questions-multiple choice questions-objective type questions-seminor topics-lab viva questions and answers-online quiz test pdf free download for freshers gate.

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Electronics questions and answers with explanation for interview, competitive can download Electronics quiz questions with answers as PDF files and eBooks. basic electronics course basic electronics pdf basic electronics test basic electronics books basic electronics components basic electronics training basic. Basic Electronics - Question myavr.info - Free download as PDF File .pdf), Text File .txt) or read online for free. Question Bank for Basic Electronics.

Mention the advantages of voltage divider bias. Draw the DC load line and indicate the Q-point. Draw DC load line and mark Q-point. Also draw the DC load line. Plot the Q-point.

Determine the required value of R C. Design the voltage divider bias circuit to operate from 12 V supply. Introduction to Operational Amplifiers 1. What is an Op-Amp? Mention the applications of Op-Amp. Explain the block diagram of an operational amplifier. Define the following parameters of an Op-Amp: Explain the characteristics of an ideal Op-amp. Write a short note on virtual ground concept of an Op-Amp.

Explain the operation of an Op-Amp as an i Inverting amplifier ii Non inverting amplifier. Derive an expression for the output voltage. Draw the circuit of inverting Op-Amp. Derive the expression for the voltage gain.

With neat circuit and necessary equations, explain the voltage follower circuit using operational amplifier. Mention its important properties. Explain how an Op-Amp can be used as i Inverting summer ii Non inverting summer.

Derive the expression for the output of a three input summing amplifier. Show with a circuit diagram, how an Op-Amp can be used as a subtractor. With a neat circuit diagram, show how an Op-Amp can be used as an integrator. Derive the expression for output voltage. With a neat circuit diagram, show how an Op-Amp can be used as a differentiator.

An Op-Amp has an open loop voltage gain of and a common mode voltage gain of 0. Design an inverting and non inverting operational amplifier to have a gain of Draw the circuit diagram. Find the output of the following Op-Amp circuit.

Determine Vo for the circuit shown below. For the circuit shown in the figure, calculate the output voltage. Module — 3 Digital Electronics 1. What is digital logic? With a diagram, show the switching and logic levels in a digital waveform.

What is Boolean algebra? State the laws of Boolean algebra. With the help of a diode switching circuit and truth table, explain the operation of i OR gate ii AND gate. Design a logic circuit, symbol and truth table of exclusive — OR gate.

What are universal gates?

## ELECTRONICS AND COMMUNICATION ENGINEERING IMPORTANT MCQ PDF

Explain the half adder circuit. Design a half adder circuit and implement it using logic gates. Explain the full adder circuit. Explain the full adder circuit with truth table. Realize the circuit for sum and carry using logic gates basic gates. Design a full adder and implement it using two half adders and write the equations for sum and carry. Design a logic circuit using basic gates with three inputs A, B, C and output Y that goes low only when A is high and B and C are different.

E3 16 to its octal and decimal equivalents. Convert the following: F5 to binary ii Convert binary Convert i Perform the following conversions: Convert i 1AD. Perform the following: Subtract Perform the subtraction: Prove the following Boolean identity using truth table: Show that: Simplify the Boolean expression: Factorise the following Boolean equations: Simplify the expression and realize using basic gates: Simplify and realize the expression using basic gates: Simplify and realize using basic gates: Simplify the following expression and realize using basic gates: Simplify and realize the following using NAND gates only: Realize the following using only NAND gates: Module — 4 Flip-Flops 1.

What is a flip-flop? Distinguish between a latch and a flip-flop.

What is a latch? With a logic diagram and truth table, explain the operation of NAND gate latch. With a logic diagram and truth table, explain the operation of NOR gate latch. What is RS flip-flop?

Explain its operation with circuit diagram, logic symbol and truth table. Microcontrollers 1. Define microcontrollers. Write their important applications. List the differences between microprocessor and microcontroller. List the features of microcontroller.

With a neat block diagram, explain the architecture of microcontroller. Explain flag register of microcontroller. Explain the logic pinout and signals of microcontroller. What is stepper motor? With a neat block diagram, explain the working principle of microcontroller based stepper motor control system.

Module — 5 Communication Systems 1. Define communication. With a neat block diagram, explain the elements of communication system. What are commonly used frequency ranges in communication system? Mention the application of each range. What is modulation? Explain the need for modulation.

List the different types of modulation schemes. What is amplitude modulation?

Explain with neat waveforms and derive the expression for the AM wave. Also draw the frequency spectrum.

Define amplitude modulation. Draw the AM signal and its spectrum.

## Engineering Questions

Define modulation index. Derive an expression for modulation index in AM. Derive the expression for the total power transmitted in an AM wave. With a neat diagram, explain demodulation detection of an AM wave. Explain frequency modulation with neat waveforms. Mention the advantages of frequency modulation. Differentiate between amplitude modulation and frequency modulation.

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A carrier of 10 V peak and frequency kHz is amplitude modulated by a sine wave of 4 V and frequency kHz. Determine the modulation index for the modulated wave and draw the amplitude spectrum.

## Basic Electronics Questions and Answers PDF 2

Assume modulation index of 0. A carrier of 1 MHz, with W of its power is amplitude modulated with a sinusoidal signal of Hz. Calculate the sideband frequencies, the bandwidth, the power in the sidebands and the total power in the modulated wave.

A 1 MHz carrier is amplitude modulated by a 40 kHz modulating signal with a modulation index of 0. The unmodulated carrier is having a power of 1 kW. Calculate the power of the amplitude modulated signal. Also find the sideband frequencies. A W, 1 MHz carrier is amplitude modulated with a sinusoidal signal of 1 kHz. Calculate the bandwidth, power in the sidebands and the total power transmitted.

The total power content of an AM signal is W. Calculate the total power transmitted.

What are the side band components of the AM wave? Calculate the percentage power saving when one side band and carrier is suppressed in an AM signal with modulation index equal to 1. A 15 kHz audio signal is used to frequency modulate a MHz carrier, causing deviation of 75 kHz. Determine modulation index and bandwidth of the FM signal.

## Basic Electrical And Electronics 225 Important MCQ PDF

Transducers 1. What is a transducer? Mention any four characteristics a transducer should possess. Resistors The resistor is a circuit element designed to offer resistance to the flow of electrons called current.

In so doing, it produces heat and, in turn, dissipates power—a resistance multiplied by the square of the current. A heating coil is an example of an application of a resistor.

Arranged in series, resistors have an additive value that is, the circuit's total resistance equals the sum of all of the resistors' value.

Arranged in parallel, their combined value diminshes. The unit of resistance is the ohm. In practice, we have kilohm and megaohm units. Capacitors Capacitors are circuit elements that represent the opposite of resistors: They store electrical power. Their capacity is measured in farads and practical subunits of a farad such as microfarad and picofarad. When arranged in parallel, their combined value increases.

When in series, their combined value diminishes. Basic electronics circuits always include some capacitors.

Diodes and Transistors The diode, a circuit element, encourages current to flow in only one direction. It has two terminals, unlike the transistor—which has three.Rectifiers 6. Design a logic circuit, symbol and truth table of exclusive — OR gate.

Breakdown voltage Answer: A higher value capacitor would be more effective in filtering. We will be using test leads to create a temporary circuit without having to solder it together.

## 3 Comments

The applied input ac power to a half wave rectifier is watts. Transducer is classified on the basis of a Transduction form used b cost c performance d compitability Q. Design an inverting and non inverting operational amplifier to have a gain of In so doing, it produces heat and, in turn, dissipates power—a resistance multiplied by the square of the current.

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