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Worksheets

Transistors

Total questions: 19

Worksheet time: 8mins

Name
Class
Date
1.

What are the 3 legs of a transistor called?

a)

Base, Electrode, Commiter

b)

Bridge, Collector, Extruder

c)

Base, Collector, Emitter

d)

Brake, Collection, Emit

2.

A transistor is essentially what?

a)

An output device

b)

An electronic switch

c)

A deivce that limits the flow of power

3.

Transistors act like tiny "____________."

a)

Electron sources

b)

Switches

c)

Batteries

d)

Bees?

4.

transistor has 3 electrodes namely

a)

PNP

b)

NPN

c)

Base/ Collector/ Emitter

d)

Drain/ Gate/ Source

5.

Which terminal was heavily dopped....?

a)

Emitter

b)

Base

c)

Collector

d)

None of the above

6.

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

a)

Saturation Region

b)

Cut-off Region

c)

Active Region

d)

None of the above

7.

In a NPN Transistor, the current carriers are ………….

a)

Acceptor Ions

b)

Donor Ions

c)

Free Electrons

d)

Holes

8.

A transistor is a …………… operated device

a)

Voltage

b)

Both Voltage and Current

c)

Current

d)

None of the Above

9.

At the Base-Emitter Junctions of a transistor, one finds ……………

a)

A Reverse Bias

b)

Low Resistance

c)

A Wide Depletion Layer

d)

None of the Above

10.

The shorter leg of an LED is what?

a)

Positive

b)

Negative

11.
Who is the inventor of transistor BJT?
a)
William Bradford Schockley
b)
Michael Faraday
c)
Alessandro Volta
d)
James Clerk Maxwell
e)
Nikola Tesla
12.

What are the names of the terminals X, Y and Z?

a)

X = Base, Y = Collector, Z = Emitter

b)

X = Emitter, Y = Base, Z = Collector

c)

X = Collector, Y = Base, Z = Emitter

d)

X = Collector, Y = Emitter, Z = Base

13.
Emits light when a current passes through it
a)
fuse
b)
diode
c)
LED
d)
resistor
14.

Before transistors, these were used as amplifiers and switches, what are they?

a)

Vacuum Tubes

b)

Variable Bulbs

c)

Gas Switches

d)

Logic Tubes

15.

In what year was the transistor invented?

a)

1948

b)

1950

c)

1958

d)

1946

16.

What is this pin called with the arrow?

a)

Emitter

b)

Base

c)

Collector

d)

Transistor

17.

What is this pin called with the arrow?

a)

Emitter

b)

Base

c)

Collector

d)

Transistor

18.

What is this pin called with the arrow?

a)

Emitter

b)

Base

c)

Collector

d)

Transistor

19.

What is this?

a)

Vacuum Tube

b)

Transistor

c)

Circuit

d)

Star Wars Character