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Diode

Total questions: 15

Worksheet time: 7mins

Name
Class
Date
1.

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

2.

Which is not one of the properties of semiconductor?

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

3.

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.

4.

The diagram is a process

a)

of doping

b)

of adding impurities

c)

of half-wave rectification

d)

of full-wave rectification

5.

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

a)
b)
c)
d)
6.

Choose the diagrams that show smoothing process has occured

a)
b)
c)
d)
7.

Zener diodes are also known as

a)

a) Voltage regulators

b)

b) Forward bias diode

c)

c) Breakdown diode

d)

d) None of the mentioned

8.

In the circuit, what is the output voltage?

a)

a) 50 V

b)

b) 70 V

c)

c) 120 V

d)

d) 170 V

9.

Which of the following is the correct symbol for the zener diode?

a)
b)
c)
d)
10.
Diode 
a)
 allows current to flow in one direction
b)
 allows current to flow in two directions
c)
is a resistor
11.
Diode is used as a half wave rectifier.
a)
It rectifies only one half of the input AC signal
b)
It rectifies both the  halves of the input AC signal
12.
Diode is used as a full wave rectifier.
a)
It rectifies only one half of the input AC signal
b)
It rectifies both the  halves of the input AC signal
13.
In forward biasing 
a)
the resistance in the circuit is very high
b)
he resistance in the circuit is very low
14.
In reverse biasing 
a)
the resistance in the circuit is very high
b)
he resistance in the circuit is very low
15.

Component that Convert AC to DC and allow current to flow in one Direction

a)

Capacitor

b)

Diode

c)

Inverter

d)

Resistor