Question # 1

A two inputs NAND gat with inputs a and b has an output '0' if.

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B is zero

A is zero

Both A and B are 1

Both A and B are '0'

The central region of a transistor is called.

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Emitter

Collector

Base

Neutral

_______ is the building block of every electronic circuit.

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Semi conductor diode

Resistor

Capacitor

Amplifier

The term invertor is used for.

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NOR gate

XNOR gate

NAND gate

NOT gate

Greater concentration of impurity is added in.

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Base

Emitter

Collector

LED

A photo diode can turn its current ON and OFF in

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Micro seconds

Mega seconds

Nano seconds

Mili seconds

Improper bisting of a transistor circiut produces:

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Heavy loading of emitter current

Distortion in the output output signal

Excessive heat at collector terminal

Faculty location of load line

The potential difference across depletion region in case of Si is

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0.6 volt

0.9 volt

0.7 volt

0.2 volt

For rectification we use.

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Transformer

Diode

Choke

Generator

NAND gate represented by:

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X = A. B

X = A+B

X= A.B

X=|A+B|

In case of reverse biasing, current is flown due to:

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Minority charge carriers

Majority charge carriers

Electrons

Protons

The p-n junction in which p side is connected to+ive and n-side is -ve the junction is said to be:

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Neutral

Forward biased

Reversed biased

None of above

In a transistor, collector current is controlled by:

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Collector voltage

Base current

Collector resistance

All of the above

Output resistance of an op amp is

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High

Low

Zero

Equal to input resistance

During negative half cycle of A.c then p-n junction offers.

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High resistance

Low resistance

No resistance

All of these

Logic gate can control some physical parameters like.

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Temperature, Pressure

Resistance, Inductance

Capacitance, Impedance

Current, voltage

Conversion of A.C into D.C is called:

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Compton effect

Rectification

Amplification

Pair production

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