P-N Junction Diode (Board Level)

Video Lecture

Theory For Notes Making

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Objective Assignment

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Subjective Assignment

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QUIZ

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Created on August 09, 2022 By

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P-N Junction Diode (Basic Level)

1 / 10

In a PN junction photo cell, the value of photo-electromotive force produced by monochromatic light is proportional to

The voltage applied at the PN junction

The barrier voltage at the PN junction

The intensity of the light falling on the cell

The frequency of the light falling on the cell

2 / 10

A crystal diode is a

Non-linear device

Amplifying device

Linear device

Fluctuating device

3 / 10

On adjusting the P-N junction diode in forward biased

Depletion layer increases

Resistance increases

Both decreases

None of these

4 / 10

The depletion layer in the P-N junction region is caused by

Drift of holes

Diffusion of charge carriers

Migration of impurity ions

Drift of electrons

5 / 10

In P-N junction, avalanche current flows in circuit when biasing is

Forward

Reverse

Zero

Excess

6 / 10

The resistance of a reverse biased P-N junction diode is about

1 ohm

10^2 ohm

10^3 ohm

10^6 ohm

7 / 10

In a PN-junction diode not connected to any circuit

The potential is the same everywhere

The P-type is a higher potential than the N-type side

There is an electric field at the junction directed from the N- type side to the P- type side

There is an electric field at the junction directed from the P-type side to the N-type side

8 / 10

When a PN junction diode is reverse biased

Electrons and holes are attracted towards each other and move towards the depletion region

Electrons and holes move away from the junction depletion region

Height of the potential barrier decreases

No change in the current takes place

9 / 10

In a junction diode, the holes are due to

Protons

Neutrons

Extra electrons

Missing of electrons

10 / 10

If the forward voltage in a semiconductor diode is doubled, the width of the depletion layer will

Become half

Become one-fourth

Remain unchanged

Become double

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P-N Junction Diode (Board Level)

Theory For Notes Making

Objective Assignment

Subjective Assignment

On Line Test

Video Lecture

Theory For Notes Making

Objective Assignment

Subjective Assignment

QUIZ