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Diode 1

Total questions: 14

Worksheet time: 7mins

Name
Class
Date
1.

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

a)

diode

b)

conductor

c)

semiconductor n

d)

insulator

e)

super semiconductor

2.

Doping of semiconductor material

a)

material which can conduct electricity better than insulator but not as well as conductor

b)

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

c)

when 4 electrons in outermost orbit

3.

which one is not the property

a)

4 electrons in outermost orbit, in covalent bonding.

b)

atoms vibrate causes electron to break free from the bonds.

c)

Electron free leaves hole.

d)

Semiconductor has 2 types of charge carriers.

e)

all of the above are the properties of it

4.

These are the characteristics of pentavalent impurities except

a)

•5 valence electron

b)

•contributing extra free electrons.

c)

•produce n-type semiconductors.

d)

produce p-type semiconductors.

SHOW ANSWER

5.

These are the characteristics of Trivalent impurities except

a)

3 valence electrons

b)

producing a "hole"

c)

produce p-type semiconductors

d)

Boron, aluminium and gallium are the examples.

e)

Antimony, arsenic, and phosphorus are the examples

6.

which statement is correct? (the dark circles represent the electrons)

a)

p-type of the diode is connected to the negative terminal.

b)

Electron moves across the p-n junction, makes the diode forward biased

c)

current will not flow in the circuit

d)

reverse biased circuit

7.

what is the meaning of rectification?

a)

a process of smoothing using a capacitor

b)

a process of adding impurities to pure materials

c)

a process of converting an alternating current into a direct current by using a diode.

8.

The diagram is a process

a)

of half-wave rectification

b)

of adding impurities

c)

of doping

d)

of full-wave rectification

9.

This is a graph that is seen on CRO. How is it change after full wave rectification process?

a)
b)
c)
d)
10.

What type of semiconductor is this?

a)

Covalent Bonding

b)

P-Type

c)

Instrinsic

d)

N-Type

11.

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.

d)

Sharing their shell

12.

What type of semiconductor is this?

a)

N-Type

b)

Pentavalent

c)

Covalent Bonding

d)

P-Type

13.

What happen if anode and cathode combine together?

a)

Extrinsic

b)

Covalent Bonding

c)

Doping

d)

Diode

14.

Select the correct polarity for forward bias

a)
b)
c)
d)