A forward biased pn junction diode has a resistance of the order of

The dynamic resistance of a forward biased p-n diode

A

Varies inversely with current

B

Varies directly with current

C

Is constant

D

Is either constant or varies directly with current

A reverse biased pn junction has resistance of the order of

A

Ω

B

kΩ

C

MΩ

D

None of the above

An ideal crystal diode is one which behaves as a perfect ___________ when forward biased.

A

conductor

B

insulator

C

resistance material

D

none of the above

If the arrow of crystal diode symbol is positive w.r.t. bar, then diode is ___________ biased.

A

forward

B

reverse

C

either forward or reverse

D

none of the above

The ratio of reverse resistance and forward resistance of a germanium crystal diode is about ___________

A

1 : 1

B

100 : 1

C

1000 : 1

D

40000 : 1

A crystal diode has forward resistance of the order of ___________

A

kΩ

B

Ω

C

MΩ

D

none of the above

The sum of the currents into a junction is equal to the sum of the currents out of that junction.

A

True

B

False

With forward bias to a pn junction , the width of depletion layer

A

Decreases

B

Increases

C

Remains the same

D

None of the above

For a P-N diode, the number of minority carriers crossing the junction depends on

A

Forward bias voltage

B

Potential barrier

C

Rate of thermal generation of electron hole pairs

D

None of the above

The d.c. resistance of a crystal diode is ___________ its a.c. resistance

A

the same as

B

more than

C

less than

D

none of the above

A forward biased pn junction diode has a resistance of the order of

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