Question # 1

The circuit of full wave rectification consist of

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Three diodes

Four diodes

Two diodes

One diode

When transistor are used in digital circuits they usually operate in the :

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Active region

Break down region

Saturation & cutoff regions

Linear region

_______ is the building block of every electronic circuit.

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Semi conductor diode

Resistor

Capacitor

Amplifier

A.C. can be converted into D.C. by

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An oscillator

Detector

An amplifier

Rectifier

A diode characteristic curve is a plot between

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Current and time

Voltage and time

Voltage and current

Forward voltage and reverse voltage

The input resistance of an op amplifier is.

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Low

High

Zero

Equal to output resistance

The ratio of potential barriers of Ge to Si at room temperatrue is.

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7:3

1:3

2:5

3:7

The resistance between the inverting (-) and non inverting inputs is called Input resistance and is the order of.

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Ohms

Kilo Ohms

Mega Ohms

Thounds Ohms

A light emitting diode emits light only when

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Reverse biased

Forward biased

Unbiased

None of these

Transistor was invented by:

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Bardeen

Micheal faraday

Lenz

Newton

NAND gate represented by:

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X = A. B

X = A+B

X= A.B

X=|A+B|

The use of LDR is in the circuit of.

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Logic gate

Rectifier

Oscillator

High Switch

Which component of the transistor has greater contrition of impurity.

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Base

Emitter

Collector

Emitter and collector

One use of a single p-n junction semiconductor in an electrical circuit is a

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Rectifier

Transistor

Battery

Diode

Which factor does not affect the conductivity of PN-Junction diode.

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Doping

Temperature

Voltage

Pressure

In a transistor, collector current is controlled by:

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Collector voltage

Base current

Collector resistance

All of the above

The gate, which changes the logic level to its opposite level is called

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NOR gate

AND gate

OR gate

NOT gate

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