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pn junction diode

Total questions: 15

Worksheet time: 8mins

Name
Class
Date
1.

PN Junction diode formed

a)

Special fabrication technique of combining P and N -type material

b)

Pushing P and N- type material towards

c)

Welding of P and N type material

2.

Majority carriers of P type materials

a)

Neutrons

b)

Electrons

c)

Protons

d)

Holes

3.

The depletion region contains

a)

Electrons

b)

Holes

c)

Immobilized charge carriers

d)

Sea of electrons

4.

Resistance developed in the depletion region is

a)

Rforward > Rreverse

b)

Rforward < Rreverse

c)

Rforward = Rreverse

d)

None of these

5.
Diode 
a)
 allows current to flow in one direction
b)
 allows current to flow in two directions
c)
is a resistor
6.

Main phenomenons associated with formation of p-n junctions are

a)

Drift only

b)

Diffusion only

c)

Diffusion and Drift

d)

only doping

7.

In the forward bias arrangement of a p-n junction diode,

a)

the n-end is connected to the positive terminal of the battery

b)

the p-end is connected to the positive terminal of the battery

c)

the direction of current is from n-end to p-end in the diode

d)

the p-end is connected to the negative terminal of the battery

8.

What type of diode is this?

a)

silicon

b)

LED

c)

Zener

d)

Mylar

9.

Anode is _________ Polarity in diodes

a)

Negative

b)

Positive

c)

Ground

d)

Hot Side

10.

Identify the right semiconductor materials required to construct a diode.

a)

Cathode: P Type, Anode: N Type

b)

Cathode: N Type, Anode: P Type

c)

Cathode: P Type, Anode: P Type

d)

Cathode: N Type, Anode: N Type

11.

Materials which can conduct electricity better than insulator,but not as well as conductors. This is the definition of

a)

diode

b)

semiconductor

c)

conductor

d)

insulator

e)

superconductor

12.

Doping of Semiconductors

a)

materials which can conduct electricity better than insulator, but not as well as conductors.

b)

The process of adding of a certain amount of specific impurities atoms in the pure semiconductor.

c)

when 4 electrons in outermost orbit.

13.

The minority carriers in P-type silicon are called _________________

a)

Neutron

b)

Proton

c)

Electron

d)

Hole

14.

The current in a semiconductor is produced by

a)

electron only

b)

holes only

c)

negative ions

d)

both electrons and holes

15.

What is the most common semiconductor material used for producing integrated circuits

a)

Quartz

b)

Silicon

c)

Diamond

d)

Tantalum