# Bipolar Junction Transistor Quiz! Trivia

25 Questions | Total Attempts: 1009  Settings  Welcome to The Bipolar Junction Transistor Quiz. The electrical charge in the bipolar transistor is transferred through electrons and holes as carriers. The junction helps control the current as it flows. Do you know how to properly set up the transistors and the flow of the current? This quiz will help you analyze how well you understand the transistor and its application. Check it out and see what more you will learn!

• 1.
What is the name given to the semiconductor device that has three or more elements?
• A.

Transistor

• B.

Zener

• C.

Diode

• D.

Shockley

• 2.
What electronic function made the transistor famous?
• A.

Switch

• B.

Isolation

• C.

Amplification

• D.

Multiplier

• 3.
In which direction does the arrow point on an npn transistor?
• A.

Away

• B.

Outward

• C.

Either a or b

• D.

Cannot be determined

• 4.
In which direction does the arrow point on a pnp transistor?
• A.

Away

• B.

Either a or c

• C.

Outward

• D.

Cannot be determined

• 5.
What was the name of the very first transistor?
• A.

Double contact

• B.

Triple contact

• C.

Single contact

• D.

Point contact

• 6.
To properly bias an NPN transistor, what polarity voltage is applied to the collector, and what is its relationships to the base voltage?
• A.

Positive, more negative

• B.

Positive, more positive

• C.

Negative, more positive

• D.

Negative, more negative

• 7.
To properly bias a PNP transistor, what polarity voltage is applied to the collector, and what is its relationship to the base voltage?
• A.

Positive, more negative

• B.

Positive, more positive

• C.

Negative, more positive

• D.

Negative, more negative

• 8.
In the NPN transistor, what section is made very thin compared with the other two sections?
• A.

The p or base section

• B.

The n or base section

• C.

The p or emitter section

• D.

The n or emitter section

• 9.
In the PNP transistor, what section is made very thin compared with the other two sections?
• A.

The p or base section

• B.

The n or base section

• C.

The p or emitter section

• D.

The n or emitter section

• 10.
What % of current in an NPN transistor reaches the collector?
• A.

50%

• B.

100%

• C.

98%

• D.

0%

• 11.
What are the majority current carriers in a PNP transistor?
• A.

Electrons

• B.

Holes

• C.

Neutrons

• D.

Protons

• 12.
What are the majority current carriers in an NPN transistor?
• A.

Electrons

• B.

Holes

• C.

Protons

• D.

Neutrons

• 13.
What is the relationship between the polarity of the voltage applied to the PNP transistor and that applied to the NPN transistor?
• A.

The polarity of voltage applied to the pnp transistor is the same of that applied to the npn transistor

• B.

The polarity of voltage applied to the pnp transistor is opposite of that applied to the npn transistor

• C.

Either a or b

• D.

No relationship

• 14.
Name the current loops in a transistor.
• A.

The base current loop

• B.

The collector current loop

• C.

The emitter current loop

• D.

Both a and b

• 15.
What is the name of the device that provides an increase in current, voltage, or power of a signal without appreciably altering the original signal?
• A.

Isolator

• B.

Switch

• C.

Amplifier

• D.

Transistor

• 16.
In the basic common emitter transistor amplifier, what is the relationship between the polarity of the input and output signals?
• A.

The signals are opposite in polarity

• B.

The signals are 180 degrees out of phase with each other

• C.

The signal are in phase

• D.

Either a or b

• 17.
What is the primary difference between the NPN and PNP amplifiers?
• A.

The polarity of the source voltage

• B.

The polarity of the output voltage

• C.

The type of biasing

• D.

The classes of amplifier

• 18.
Which biasing method is the most unstable?
• A.

Base current or fixed bias

• B.

Voltage divider or beta independent

• C.

Emitter stabilized circuit

• D.

All of the above

• 19.
Which biasing method is the most stable?
• A.

Base current or fixed bias

• B.

Voltage divider or beta independent

• C.

Emitter stabilized circuit

• D.

All of the above

• 20.
What type of bias is used where only moderate changes in ambient temperature are expected?
• A.

Self bias

• B.

Voltage divider or beta independent

• C.

Emitter stabilized circuit

• D.

None of the above

• 21.
What is the most widely used combination-bias system?
• A.

Voltage divider type

• B.

Base current or fixed bias

• C.

Beta independent type

• D.

Either a or c

• 22.
What amplifier class of operation allows collector current to flow during the complete cycle of the input?
• A.

Class a

• B.

Class b

• C.

Class c

• D.

Class ab

• 23.
What amplifier class of operation allows collector current to flow during the half-cycle only of the input?
• A.

Class a

• B.

Class b

• C.

Class c

• D.

Class ab

• 24.
What is the name of the term used to describe the condition in a transistor when the emitter-base junction has zero bias or is reverse biased and there is no collector current?
• A.

Cutoff

• B.

Active

• C.

Saturation

• D.

None of the above

• 25.
What primary item/s determined the class of operation of an amplifier?
• A.

The amount of bias

• B.

The amplitude of the input signal

• C.

Both of the above

• D.

None of the above

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