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POST-LAB- TRANSISTOR CHARACTERISTICS

Total questions: 21

Worksheet time: 8mins

Name
Class
Date
1.

How many terminals are there in a transistor....?

a)

1

b)

2

c)

3

d)

4

2.

The transistor you've checked, what type was it....?

a)

pnp

b)

pnpn

c)

npnp

d)

npn

3.

How did you determine that the transistor checked was an 'npn' transistor....?

a)

The negative terminal of the MM was unchanged

b)

The negative terminal of the MM was unchanged

c)

The positive terminal of the MM was unchanged

d)

The positive terminal of the MM was changed

4.

Which terminal was heavily dopped....?

a)

Emitter

b)

Base

c)

Collector

d)

None of the above

5.

The Collector of the transistor was ................... dopped.

a)

Moderately

b)

Heavily

c)

Lightly

d)

None of the above

6.

The base of the transistor is a ....................... layered sandwich.

a)

Thickly

b)

Evenly

c)

Thinly

d)

None of the above

7.

What is the button used to vary the voltage in the dual power supply unit....?

a)

M1

b)

On/Off

c)

Voltage/ Current

d)

None of the above

8.

The Current of the power supply unit indicates with what....?

a)

V

b)

C.C.

c)

C.V.

d)

A

9.

If the Current in the display is 0.25A, what does it mean....?

a)

None

b)

The power supply unit continuously supply 0.25A only

c)

The power supply unit allow more than 0.25A

d)

The power supply unit does not allow more than 0.25A

10.

What is meant by the 'Green' socket of the power supply unit.....?

a)

Negative

b)

Positive

c)

Earth

d)

Common

11.

What is the group in the periodic table that is used to form an N-type semiconductor.....?

a)

Group- (II) Elements

b)

Group- (III) Elements

c)

Group- (IV) Elements

d)

Group- (V) Elements

12.

What is the group in the periodic table that is used to form an P-type semiconductor.....?

a)

Group- (II) Elements

b)

Group- (III) Elements

c)

Group- (IV) Elements

d)

Group- (V) Elements

13.

In which region, the transistor operates.....?

a)

Saturation Region

b)

Cut-off Region

c)

Active Region

d)

None of the above

14.

What was the first thing to do when supplying a voltage to a circuit.......?

a)

Connect the supply directly

b)

Connect the supply directly and increase the voltage gradually

c)

Decrease the voltage gradually

d)

Measure the required voltage and supply

15.

How did you get the Input Characteristics...?

a)

By keeping the output voltage constant and by varying the input voltage

b)

By keeping the output voltage constant and by varying the input Current

c)

By keeping the output Current constant and by varying the input voltage

d)

By keeping the output Current constant and by varying the input Current

16.

How did you get the output characteristics.....?

a)

By keeping the input voltage constant at different values and varying the output voltage and measuring the corresponding IC current

b)

By keeping the input current constant at different values and varying the output voltage and measuring the corresponding IB current

c)

By keeping the input current constant at different values and varying the output voltage and measuring the corresponding Ic current

d)

By keeping the input current constant at different values and varying the output current and measuring the corresponding IC current

17.

Choose from the following, what were the changes did to the circuit in order to obtain the 'Transfer Characteristics'.....?

a)

The voltmeter of the output was changed

b)

The Voltmeter of the input was changed

c)

The Ammeter of the output was changed

d)

The Ammeter of the input was changed

18.

What is the purpose of drawing a DC Load Line......?

a)

In order to measure the amplification

b)

In order to determine the current gain

c)

In order to determine the voltage gain

d)

In order to determine the location of the Q-Point

19.

What is the purpose of plotting the 'Transfer Characteristics'.....?

a)

In order to determine the DC Current Gain

b)

In order to determine the β value

c)

In order to determine the α value

d)

In order to determine the γ value

20.

What is an intrinsic semiconductor......?

a)

Pure Si

b)

Pure C

c)

Pure Ge

d)

Pure Semiconductor

21.

What is an extrinsic semiconductor.....?

a)

A pure semiconductor

b)

A semiconductor with impurities

c)

When impurities introduced to an intrinsic semiconductor

d)

A semiconductor with which has pure Si/Ge