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Electronic Devices & Circuits Practice Quiz 3

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Question 1

What capacitance is significant when the diode is forward biased?

Question 2

A diode that is especially designed to operate as a voltage-variable capacitor. It utilizes the junction capacitance of a semiconductor diode.

Question 3

The capacitance of a varactor will when the reverse bias voltage is increased.

Question 4

With increase is reverse bias voltage transition capacitance

Question 5

In a LED light is emitted due to

Question 6

The efficiency of LED is increased when ______.

Question 7

Photo-diode works on the principle of______.

Question 8

The effect obtain when the electric field across a semiconductor is strong enough which causes the free electrons to collide with valence electrons, thereby releasing more electrons and a cumulative multiplication of charge carriers occur.

Question 9

A negative resistance diode commonly used in microwave oscillators and detectors, it is sometimes used as amplifiers. This device is also known as Esaki diode.

Question 10

In a reverse-biased pn junction, the sudden large increase in current that occurs when a particular value of reversed voltage is reached due to ionization by the high intensity electric field in the depletion region. This effect is known as,
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Dec 16ESE & GATE EC