Physics Lab Viva Voce Questions and its answers Laser Parameters



1. What is semi conductor diode laser?
Semiconductor diode laser is a specially fabricated pn junction diode. It emits laser light when it is
forward biased.

2. What is LASER?
The term LASER stands for Light Amplification by Stimulated Emission of Radiation. It is a device
which produces a powerful, monochromatic collimated beam of light in which the waves are coherent.

3. What are the characteristic of ....etc

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i need the edc viva question and answer to prepare for the external exam so i need some basic questions of edc. ....etc

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Introduction

What is Automation?

- Automation is making a process automatic, eliminating the need for human intervention.
- Is a self-controlling or self-moving process.
- Automation software offers automation wizard and commands of its own in addition to
providing task recording and re-play capabilities.
- Using these tools we can record the task
- Then if needed use the editor to edit the task, add new commands or using GUI automation
wizards

Benefits of Automation

Fast: test automation runs faster than human users
Reliable: it perform ....etc

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viva questions and answers for plc lab

What are different comonents in PLC?
Answer: 1. Input Interface 2. Memory Section 3. Central Processing Unit (CPU) 4. Programmable Language 5. Programming tool 6. An output Interface

Advantages of PLCs than Hard wired Relay?
Answer: PLCs are highly reliable, easily programmable, Small and Inexpensive, PLCs can be designed with the communication capabilities so they can converse with the local or remote computer, They can sustain in robust environment less maintenance.

What is the programmable language ....etc

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electronic devices and circuits interview questions and answers pdf

1. At room temperature the current in an intrinsic semiconductor is due to

A. holes
B. electrons
C. ions
D. holes and electrons

2. Work function is the maximum energy required by the fastest electron at 0 K to escape from the metal surface.

A. True B. False

3. The most commonly used semiconductor material is

A. silicon
B. germanium
C. mixture of silicon and germanium
D. none of the above

4. In which of these is reverse recovery time nearly zero?

A. Zener diode
B. Tun ....etc

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electronic devices and circuits lab viva questions with answers

ELECTRONIC DEVICES AND CIRCUITS LABORATORY
(Revised)
Viva questions

SEMICONDUCTOR DIODE AND ZENER DIODE

1. Define knee voltage of a diode.

2. Draw VI characteristics of pn junction diode.

3. Although zener diode is operated in the reverse breakdown

region, but it does not burn. Why?

4. Differentiate between static and dynamic resistance of a diode.

5. Differentiate between avalanche and zener breakdown.

6. Draw the VI characteristics of an ideal diode.

Transis ....etc

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system software lab lab viva questions and answers pdf

VIVA VOCE QUESTIONS WITH ANSWERS INTRODUCTION

1. Define system software.
It consists of variety of programs that supports the operation of the
computer. This software makes it possible for the user to focus on the other problems to be solved with out needing to know how the machine works internally.
Eg: operating system, assembler, loader.

2. Give some applications of operating system.
to make the computer easier to use
to manage the resources in computer
process management
data ....etc

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why to go for testbenches.its uses.difference between serial & parallel adder.use of counter ....etc

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