Question # 1

If we connect a A.C. volt meter to read A.C. voltage, It would read its:

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RMS value

Instantaneous value

Valued average over a cycle

Zero

Both (B) and (C)

To design a resonant circuit of frequency 100 KHz with an inductor of inductance 5 mH, we need a capacitor of capacitance

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5.07 pF

50 pF

0.507 pF

507 pF

The highest value reached by the voltage or current:

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In quarter cycle is called Instantaneous value

In half cycle is called peak-to-peak value

In one cycle is called peak value

In half cycle is called Instantaneous value

None of these

The sum of positive and negative peak values is called:

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Instantaneous value

Peak value

Rms valuie

Peak-to peak-value

None of these

Which of the following has a great concentration of impurity

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base

emitter

collector

none of these

Electromagnetic waves transmit energy equal to

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1/2 mv²

m_oc²

hf/c

hf

Which one of the following waves belongs to electromagnetic spectrum

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Radio and TV waves

Radar waves

Micro waves

All of them

A signal appears after amplification, at the output terminal with a phase shift of 180° , if it is applied at

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inverting input

non-inverting input

any one of the input terminal

none of them

At resonance, the impedance of RLC series circuit is

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Maximum

Zero

Minimum

Determinate

In n-p-n transistor, emitter base junction is kept

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reversed

forward biased

may be reversed or may be forward biased

none of these

Unless stated otherwise, when we speak of A.C. meter reading, we usualy mean:

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Peak value

RMS value

Instantaneous value

Peak-to-peak value

Both (A) and (C0

Conversion of alternating current into direct current is called

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amplification

rectification

conduction

polarization

During each cycle, alternating voltage reaches a peak value

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One time

Two times

Four times

A number of times depending on the frequency

The waveform of alternating voltage is a:

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Square

Rectangular

Saw-tooth

Sinusoidal

None of these

The R₁= infinity and R₂= 0, then the gain of non-inverting amplifier is

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zero

infinity

one

any one of these

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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