ECE 2

Question 1

A silicon pn junction device that is designed for
Operation in the reverse-breakdown region

Answer 1

Zener diodes

Question 2

A diode that always operates in reverse bias and is doped to maximize the inherent
capacitance of the depletion region

Answer 2

Varactor diodes

Question 3

When the device is forward-biased, electrons cross the pn junction from the n-type
material and recombine with holes in the p-type materials

Answer 3

Light-emitting diode

Question 4

A device that operates in reverse bias where iy is the reverse light current. It has a
small transparent window that allows light to strike the pn junction

Answer 4

Photodiode

Question 5

Also known as a photovoltaic cell, is a type of semiconductor device that converts
light into electrical energy

Answer 5

Solar cell

Question 6

Normally emits coherent light, whereas the led emits incoherent light

Answer 6

Laser diode

Question 7

Are high-current diodes used primarily in high-frequency and fast-switching
applications

Answer 7

Schottky diode

Question 8

Consists of heavily doped p and n regions separated by an intrinsic region

Answer 8

Pin diode

Question 9

Is a three-layer semiconductor device consisting
Of either two n- and one p-type layers of material or two p- and one n-type layers of
material

Answer 9

Transistor

Question 10

Are three terminal semiconductor devices which could be used to amplify signals

Answer 10

Bipolar junction transistors

Question 11

Derived from the fact that the base is common to both the input and output sides of
the configuration

Answer 11

Common base

Question 12

Usually closest to or connected to the ground

Answer 12

Emitter

Question 13

The base-emitter junction is forward-biased, whereas the collector-base junction is
reverse-biased

Answer 13

Active region

Question 14

Base-emitter and collector-base junctions of a transistor are both reversed-biased

Answer 14

Cutoff region

Question 15

Base-emitter and collector base junctions are forward-biased

Answer 15

Saturation region

Question 16

Power supply that is directly or indirectly applied to the collector terminal of the
transistor

Answer 16

Collector biasing voltage (vcc)

Question 17

Dc voltage that is used to bias the base of the transistor

Answer 17

Base biasaing voltage (vbb)

Question 18

For common emitter, nothing more than a ground connection

Answer 18

Emitter biasing voltage (vee)

Question 19

Means to keep the input circuit always forward biased and output circuit always
reverse biased

Answer 19

Transistor biasing

Question 20

Refers to the dc voltages applied to a transistor in order to turn it on so that it can
amplify the ac signal

Answer 20

Biasing

Question 21

The simplest transistor dc bias configuration

Answer 21

Fixed bias circuit

Question 22

The line drawn over the collector curves to determine all possible operating points

Answer 22

Loadline

Question 23

Generally a three terminal device which could be used in applications wherein
bipolar junction transistors are used

Answer 23

Field effect transistor

Question 24

Are either n-channel or p-channel depending on its construction

Answer 24

Junction field effect transistor

Question 25

Are both types of power mosfets used in power electronics

Answer 25

Vmos and umos power mosfets

Question 26

A type of semiconductor technology widely used in digital circuits, such as microprocessors and memory chips

Answer 26

Cmos (complementary Metal-oxide-semiconductor)

Question 27

Stands for metal semiconductor field effect transistor, which is a type of field-effect transistor that uses a metal-semiconductor junction for the gate

Answer 27

Mosfet

Question 28

Provides amplification of a signal without any distortion so that the output signal is an exact amplified replica of the input signal

Answer 28

Linear amplifier

Question 29

A combination of circuit elements

Answer 29

Model

Question 30

Reflects the operation of the bjt at mid-frequencies. Is an equivalent network that is used to predict the performance of the transistor amplifier

Answer 30

Re model

Question 31

A logarithmic unit of measurement for power gain and voltage gain

Answer 31

Decibel

Question 32

A unit for measuring power levels referenced to 1 mw

Answer 32

Dbm

Question 33

A voltage amplifying device that can perform different operations. It is the most useful device in analog circuitry. Are very high gain amplifiers with very wide bandwidth, very high input impedance. Single-ended input One input is connected to the ground

Answer 33

Op-amp

Question 34

Both input pins have input signal

Answer 34

Double-ended input

Question 35

An op amp specification which indicates the voltage gain of an op amp when there is no feedback resistor

Answer 35

Open loop voltage gain

Question 36

When there is no input voltage in an op-amp, its output is ideally zero

Answer 36

Maximum output voltage swing

Question 37

If the input of the op-amp is zero volts, ideally its output is equal to zero also

Answer 37

Input offset voltage

Question 38

Measured across the output terminal of the op-amp

Answer 38

Output impedance

Question 39

Defined as the maximum rate of change of the output voltage in a step input voltage

Answer 39

Slew rate

Question 40

The principle is the same in basic amplifiers

Answer 40

Frequency response

Question 41

Is one of the most useful concepts in electronics

Answer 41

Negative feedback

Question 42

Is the voltage gain with external feedback circuit

Answer 42

Closed-loop voltage gain

Question 43

This is a special case of the noninverting amplifier

Answer 43

Voltage follower

Question 44

A specialized op-amp circuit in which the main function is to compare two input voltages

Answer 44

Comparator

Question 45

Has two or more inputs that provide a means of algebraically summing multiple voltages, each multiplied by a constant-gain factor

Answer 45

Summing amplifier

Question 46

Simulates mathematical integration, which is basically a summing process that determines the total area under the curve of a function

Answer 46

Integrator

Question 47

The differentiator circuit consists of capacitor as input element and resistor as feedback element

Answer 47

Differentiator