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Electronic Test 1ECE

Total questions: 67

Worksheet time: 1hrs 4mins

Name
Class
Date
1.

For a BJT, for common base configuration the input characteristics are represented by a plot between which of the following parameters?

a)

VBE and IE

b)

VBE and IB

c)

VCC and IC

d)

VCC and IC

2.

In a BJT, if the collector-base junction is reverse-biased and the base-emitter junction is forward-biased, which region is the BJT operating in?

a)

Cutoff region

b)

Active region

c)

Saturation region

d)

Breakdown region

3.

Which of the following correctly determines the relation between α and β?

a)

α=β/(1-α)

b)

β=α/(1-α)

c)

β=α/(1-β)

d)

β=α*(1-β)

4.

Type of transistor circuits commonly used is

a)

C-B

b)

C-C

c)

C-E

d)

ALL THE ABOVE

5.

using the figure decide, what is the BJT amplifier configurations:

a)

Common Base amplifier

b)

Common Emitter amplifier

c)

Common Collector amplifier

6.

decide what is the BJT amplifier configurations for the figure below

a)

Common Base

b)

Common Emitter

c)

Common Collector

7.

Which is beta's current ratio?

a)

IC/IB

b)

IC/IE

c)

IB/IE

d)

IE/IB

8.

When a silicon diode is forward biased, what is VBE for a C-E configuration?

a)

0 V

b)

0.3 V

c)

0.5 V

d)

0.7 V

9.

If a 2 mV signal produces a 2 V output, what is the voltage gain?

a)

0.001

b)

1000

c)

10

d)

0.002

10.

Calculate minority current ICO if IC = 20.002 mA and IC majority = 20 mA.

a)

2 micro amps

b)

0.002 micro amps

c)

2 nano amps

d)

2 milli amps

11.

Use this table of collector characteristics to calculate beta at VCE = 7.5 V and IB = 30 micro amps

a)

100

b)

10

c)

106

d)

50

12.
The approximate voltage across the forward-biased base-emitter junction of a Ge BJT is
a)
0 V
b)
0.7 V
c)
0.3 V
d)
VBB
13.
When the transistor is in cutoff, VCE is
a)
o V
b)
equal to VBE
c)
minimum
d)
equal to VCC
14.
The βDC of a transistor is its
a)
current gain
b)
voltage gain
c)
power gain
d)
internal resistance
15.
It is constructed with three doped semiconductor regions separated by two pn-junctions
a)
BJT
b)
OJT
c)
BUT
d)
BOT
16.
BJT stands for
a)
Biomedical Junction Table
b)
Binary Justified Transistor
c)
Bipolar Junction Transistor
d)
Bipolar Junction Thyristor
17.
The region of a BJT that is lightly doped and very thin compared to other two regions
a)
base
b)
emitter
c)
collector
d)
common
18.
The heavily doped region of a BJT
a)
collector
b)
base
c)
emitter
d)
common
19.
The moderately doped region of a BJT
a)
emitter
b)
collector
c)
common
d)
base
20.
The ratio of dc collector current (IC) to the dc base current (IB)
a)
alpha
b)
beta
c)
gamma
d)
theta
21.

Q1. Según grafico , diga que tipo de transistor es:

a)

La polarización de un transistor: consiste en fijar el punto de trabajo

b)

La polarización de un transistor: consiste en fijar el punto de trabajo Q

c)

Este transistor es un NPN

d)

transistor-npn , que también se llama BJT,

e)

La técnica de fabricación más común es la deposición epitaxial.

22.

In a Transistor ………………..

a)

IE = IC + IB

b)

IC = IE + IB

c)

IE = IC – IB

d)

IB = IC + IE

23.

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

24.

What is the correct name for this component?

a)

Transistor

b)

Resistor

c)

Thyristor

d)

Thermistor

25.

Bipolar junction transistor consist of three terminals which are:

a)

Emitter, source, base

b)

Gate, emitter, collector

c)

Emitter, base, collector

d)

Emitter, p-side and n-side

26.

 In an NPN transistor, the N regions are

a)

emitter and base

b)

emitter and collector

c)

base and collector

d)

both collectors

27.

Which terminal is doped degenerately?

a)

Collector

b)

Emitter

c)

Base

d)

Gate

28.
BJT stands for
a)
Biomedical Junction Table
b)
Binary Justified Transistor
c)
Bipolar Junction Transistor
d)
Bipolar Junction Thyristor
29.
Which of the following is not a terminal or region of a BJT?
a)
base
b)
collector
c)
drain
d)
emitter
30.

Which terminal was heavily dopped....?

a)

Emitter

b)

Base

c)

Collector

d)

None of the above

31.

transistor has 3 electrodes namely

a)

PNP

b)

NPN

c)

Base/ Collector/ Emitter

d)

Drain/ Gate/ Source

32.

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

33.

Which one is a 3 terminal device?

a)

Varactor diode

b)

LASER diode

c)

Transistor

d)

LED

34.

Which one is NPN transistor?

a)
b)
c)
d)
35.

Voltage controlled device is

a)

PN junction diode

b)

BJT

c)

FET

d)

Zener diode

36.

In CB configuration, the value of α is

a)

ICIE\frac{I_C}{I_E}

b)

IEIB\frac{I_E}{I_B}

c)

IBIC\frac{I_B}{I_C}

d)

IEIC\frac{I_E}{I_C}

37.

A transistor is essentially what?

a)

An output device

b)

An electronic switch

c)

A deivce that limits the flow of power

38.

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

39.

Transistors act like tiny "____________."

a)

Electron sources

b)

Switches

c)

Batteries

d)

Bees?

40.

transistor has 3 electrodes namely

a)

PNP

b)

NPN

c)

Base/ Collector/ Emitter

d)

Drain/ Gate/ Source

41.

In a Transistor ………………..

a)

IE = IC + IB

b)

IC = IE + IB

c)

IE = IC – IB

d)

IB = IC + IE

42.

In which circuit does the bulb light up?

a)
b)
c)
d)
43.

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

a)

1

b)

2

c)

3

d)

4

44.

What are the names of the legs on a Bipolar Junction Transistors? (3 Correct)

a)

Base

b)

Collector

c)

Emitter

d)

Anode

e)

Gate

45.

What is this?

a)

Vacuum Tube

b)

Transistor

c)

Circuit

46.

Rajah yang manakah menunjukkan arah arus konventional dalam transistor bipolar NPN?

a)
b)
c)
d)
47.

a)

A

b)

B

c)

C

d)

D

48.

a)

A

b)

B

c)

C

d)

D

49.

a)

A

b)

B

c)

C

d)

D

50.

a)

A

b)

B

c)

C

d)

D

51.

What is the type of the transistor shown?

a)

PNP

b)

NPN

c)

BJT

52.

a)

A

b)

B

c)

C

d)

D

53.

a)

A

b)

B

c)

C

d)

D

54.

Which equations matches the picture?

a)

3B + 1 = 6

b)

B + 3 = 6

c)

1 + 3 = 6

d)

6 = 3B + 1

55.

Which equation matches the picture above?

a)

c = 4

b)

1 + 1 = 8

c)

2 = 8

d)

2C = 8

56.
Write an equation for the model above.
a)
x + 3 = -9
b)
x - 3 = 9
c)
3x + 1 = 9
d)
3x - 1 = 9
57.
What equation is modeled?
a)
3 = 6
b)
3x = 6
c)
x = 6
d)
3 = 6x
58.

Which equation matches the picture above? ( circles = 1 and triangles = t)

a)

t = 3

b)

t + 4 = 7

c)

1 + 4 = 7

d)

4t + 1 = 7

59.
Name the variable in the following number sentence:
2x -7 = 9
a)
x
b)
2
c)
7
d)
2x-7
60.
Name the coefficient in the following number sentence:
9x - 15 = 27
a)
9
b)
15
c)
x
d)
9x-15
61.
What term is represented by the algebra tiles?
a)
6
b)
-6
c)
6x
d)
-6x2
62.

Quels sont les 2 types de transistors bipolaires ?

a)

PNN et ADD

b)

PNP et NPN

c)

PPN et NNP

d)

TO32 et TO94

63.

A 47 Kohm resistor would have which colours on its first three bands?

a)

yellow, violet, white

b)

red, white, blue

c)

yellow, violet, orange

d)

orange, yellow, violet

64.

Nilai resistor berikut adalah

a)

230

b)

240

c)

340

d)

330

65.

Nilai resistor berikut adalah

a)

13000

b)

1300 ohm

c)

10000 ohm

d)

1000 ohm

66.

Nilai resistor berikut adalah

a)

560

b)

5600

c)

56000

d)

56

67.
Ohm's law states that:
a)
V=IR
b)
V=I/R
c)
V=R/I
d)
V=I+R

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