Physics>Modern Physics>Semiconductor Devices and their Applications>Transistor as a Switch

Transistor as a Switch

IMPORTANT

Transistor as a Switch: Overview

This topic covers concepts, such as, Transistor as a Device & Transistor as a Switch etc.

Important Questions on Transistor as a Switch

HARD

IMPORTANT

Physics>Semiconductor Devices and their Applications>Transistor as a Switch> Q 1

In which state is the transistor said to be in a switched off mode?

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IMPORTANT

Physics>Semiconductor Devices and their Applications>Transistor as a Switch> Q 2

Transistor functions as a switch. Explain.

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IMPORTANT

Physics>Semiconductor Devices and their Applications>Transistor as a Switch> Q 3

Explain the working of transistor as a switch.

HARD

IMPORTANT

Physics>Semiconductor Devices and their Applications>Transistor as a Switch> Q 4

If $α$ and $β$ are the current gain in the CB and CE configurations respectively of the transistor circuit, then $\frac{β - α}{α β} =$

EASY

IMPORTANT

Physics>Semiconductor Devices and their Applications>Transistor as a Switch> Q 5

Assertion: In a CE transistor amplifier the input current is much less than output current.

Reason: The common emitter transistor amplifier has very high input impedance -

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IMPORTANT

Physics>Semiconductor Devices and their Applications>Transistor as a Switch> Q 6

A transistor oscillator is

(i) An amplifier with positive feedback

(ii) An amplifier with reduced gain

(iii) The one in which DC supply energy is converted into AC output energy. Then