Question # 1

Mathematical manipulation of the two quantized states can be best carried if they are represented by

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high - low

yes - no

on - off

0 - 1

Electromagnetic waves transmit energy equal to

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1/2 mv²

m_oc²

hf/c

hf

During the negative half-cycle of the half-wave rectification, the diode

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does not conduct

conducts

either of these

none of these

For the normal operation of the transistor, its

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emitter-base and collector base junctions are forward biased

emitter-base junction is reversed biased and collector base junction is forward biased

emitter-base junction is forward biased and collector-base junction is reverse biased

any one of these

Due to the high value of the input resistance, practically, the value of the current which flows between the input terminals is

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zero

small

large

very large

The open loop gain of OP-AMP is of the order of

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10²

10³

10⁴

10⁵

The amplifier which us used to perform mathematical operations electronically is known as

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calculator

OP-AMP

computer

any one of them

Conversion of alternating current into direct current is called

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amplification

rectification

conduction

polarization

When the p-n junction is forward biased its resistance is of the order of

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few mega ohms

few kilo ohms

few ohms

few milli ohms

The average of A.C. current and voltage over a complete cycle is

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Maximum

zero

Neither zero nor maximum

None of these

OP-AMP has the following input terminals

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one

two

three

four

In RLC series circuit, resonance occurs when

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X_{L > Xc}

X_{L < Xc}

X_{L = Xc}

None of these

The value of current gain of n-p-n transistor is of the order of

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tens

hundreds

thousands

ten thousands

At resonance, the phase angle for RLC series resonance circuit equals

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0°

90°

180°

270°

The total reactance of a series RLC circuit at resonance is

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zero

Equal to the resistance

Infinity

Capacitive

The wave form of alternating voltage is the graph between:

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Voltage across X-axis and time across y-axis

Current and time

Voltage along y-axis and time along x-axis

Voltage and current

Either (B) or (D)

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ECAT Physics Chapter 16 Alternating Current Online Test MCQs With Answers

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