Question # 1

The converter of analogue to digital signal is:

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ADC

DAC

ATDC

None of these

To protect the gold leaves of electroscope from the external electric disturbances, the aluminum foil is grounded by a thin wire, which is made up of:

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Aluminum

Silver

Copper

Brass

The quantities, whose values remain constant or vary continuously are called.

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Analogue quantities

Digital quantities

Maximum quantities

Minimum quantities.

What does a switch do:

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Oppose the current

Open and close the circuit

Store energy

Provide voltage

electric intensity is a quantity:

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scalar

vector

base

none of these

The logical operation performed by this gate is:

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AND

NOR

NAND

OR

Positive charge can be produced by:

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Combing in hair

Rubbing glass rod on silk

By rubbing ebonite rod on wool

By rubbing glass rod wool

In variable capacitor, dielectric medium is:

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Paper

Air

Mica

Ceramic

Two switches attached in series work on which operation?

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AND operation

OR operation

NOT operation

NOR operation

SI unit of capacitance is:

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Joule

Volt

Watt

Farad

The process by which electrons are emitted by a hot metal surface is known as:

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Boiling

Evaporation

Conduction

Thermionic emission

The symbol of AND operation is:

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+

-

.

*

One coulomb is equal to charge of electrons:

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6.25x10^-19

6.25x10¹⁹

6.25x10¹⁸

6.25x10^-18

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