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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plc dcs and scada short type question with answer pdf file

SCADA

A SCADA (or supervisory control and data acquisition) system. It consists of many remote terminals units for collection of data (field),that is being connected with master station through any communication system, having main task of collection of accurate data and controlling of process for smooth operation.

DCS

It stands for distributed Control System, controlling is performed by embedded system (Microcontroller based or Microprocessor based controlling unit for device or in ....etc

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What is electronics?

The word electronics is derived from electron mechanics, which means to study the behavior of an electron under different conditions of applied electric field.

The branch of engineering in which the flow and control of electrons in vacuum or semiconductor are studied is called electronics. Electronics can also be defined as the branch of engineering in which the electronic devices and their utilization are studied.

The motion of electrons through a conductor gives us electric current. This electric current can be ....etc

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Designed as a text for students of various engineering streams, such as electronics/electrical engineering, electronics and communication engineering, computer science and technology, information technology, instrumentation and control engineering, this is a well-written text is an introduction to electronic devices and circuits, it introduces readers to the analysis and design of electronic circuits with an emphasis on work and the use of semiconductor devices. It covers the operating principles, characteristics and applications of electronic ....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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