Question # 1

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

A diode characteristics curve is a plot between

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Current and resistance

Voltage and time

Voltage and current

Current and time

The symbol of p-n-p transistor is

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Transistor was invented by:

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Bardeen

Micheal faraday

Lenz

Newton

Automatic function of street light can be done by the use of.

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Inductor

Rectifier

Comparator

emf

In a transistor, collector current is controlled by:

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Collector voltage

Base current

Collector resistance

All of the above

Which device is used as a rectifier?

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Capacitor

Transistor

Diode

Transformer

The device which are required to convert various physical quantities into electric voltage are called.

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Filters

Rectifiers

Amplifiers

Sensors

_______ is the building block of every electronic circuit.

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Semi conductor diode

Resistor

Capacitor

Amplifier

A PN junction can not be sued a.

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Rectifier

Amplifier

Detector

LED

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

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Doping

Temperature

Voltage

Pressure

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

In a certain circuit, I_{B = 40 µA,}I_C= 20 mA

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450 amp

0.45 amp

5 m amp

500 amp

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 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

For automatic Switching of streetlight, the op amplifier is used as.

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Inductor

Converter

Comparator

Thermistor

The reverse saturation current in a PN junction diode is only due to:

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Majority carriers

Minoritycarriers

Acceptor ions

Donor ions

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