Electronic Devices and Circuits

 ECE6200 Electronic Devices and Circuits

The process of adding impurities is called ___________.	Doping
The process of imparting impurities to an intrinsic semiconductive material in order to control its conduction characteristics.	Doping
The depletion region is created by	Diffusion
A solid material in which the atoms are arranged in a symmetrical pattern.	Crystal
A trivalent impurity is added to silicon to create	A p-type semiconductor
The majority carriers in an p-type semiconductor are	Holes
Free electrons are also called __________.	Conduction electrons
A pentavalent impurity is added to silicon to create	An n-type semiconductor
The smallest particle of an element that possesses the unique characteristics of that element.	Atom
Holes in an n-type semiconductor are	Minority carriers that are thermally produced
The reverse voltage is ____________ in practical diode model.	equal to bias voltage
What happens to the depletion region during forward bias?	Narrows
The connection wherein the negative terminal of the source is connected to the anode side of the circuit and the positive terminal is connected to the cathode side.	Reverse-bias connection
The p region of the diode.	Anode
The value of barrier potential of a diode.	0.7 V
The condition that allows current through the pn junction	Forward Bias
The ideal diode model is represented like a/an __________.	simple switch
The n region of the diode.	Cathode
The limit of external reverse-bias voltage wherein the reverse current will drastically increase.	Breakdown voltage
The bias wherein the positive side of external voltage is connected to the n region of the diode and its negative side is connected to the p region.	Reverse Bias
The average voltage of a full-wave rectifier is _____________.
It is created from the addition of a trivalent impurity in silicon.	A p-type semiconductor
The depletion region is created by	all of the choices
A type of current wherein holes are moving because of the vacancy left in every move of free electrons.	hole current
The bias wherein the negative side of external voltage is connected to the n region of the diode and its positive side is connected to the p region.	Forward Bias
The smallest particle of an element that possesses the unique characteristics of that element.	Atom
The process of imparting impurities to an intrinsic semiconductive material in order to control its conduction characteristics.	Doping
The majority carriers in an p-type semiconductor are	Holes
It means there are no impurities.	Intrinsic
The value of the forward voltage in practical diode model.	0.7 V
The fuse rating that must be used	should be at least 20% larger than the calculated Ipri.
The smallest particle of an element that possesses the unique characteristics of that element.	Atom
It determines the effectiveness of the filter.	Ripple factor
A material that easily conducts electrical current.	Conductor
The following are examples of trivalent atoms except ___________,	Carbon
The addition of impurities to an intrinsic semiconductive material.	Doping
The circuit wherein the during the negative alternation of the ac input voltage, the diode is reverse-biased and there is no current.	Full-wave rectifier
A material that has no bandgap.	Conductor
It states how much change occurs in the output voltage over a certain range of load current values.	Load Regulation
The bias wherein the positive side is connected to the p region and the negative side of external voltage is connected to the n region of the diode.	Reverse Bias
It is represented like a switch.	Ideal diode model
The surge current initially occurs during ________.	The first turn on of the power
The process of adding impurities is called ___________.	Doping
It is the voltage variation in the capacitor.	Filter voltage
It only conducts current in one direction and block the other direction.	Diode
A solid material in which the atoms are arranged in a symmetrical pattern.	Crystal
What happens to the depletion region during forward bias?	Narrows
A pn junction is formed by	The boundary of a p-type and an n-type material
Free electrons are also called __________.	Free electrons are also called __________.
The output voltage of a center-tapped full-wave rectifier is ____________.
It produces an output voltage from the input voltage with a multiplication factor of two.	Voltage Doubler
It adds a dc level to an ac voltage.	Diode Clamper
A circuit of half-wave voltage doubler with the addition of another diode-capacitor section.	Voltage tripler
A voltage multiplier that produces an output voltage from the input voltage with a multiplication factor of four.	Voltage quadrupler
A type of limiter which the level to which an ac voltage can be adjusted by adding a bias voltage in series with a diode.	Biased Limiter
Diode clamper is also known as __________.	DC restorer
Also known as diode limiter.	Diode Clipper
What is called to a diode clamper which inserts a negative dc level in the waveform?	Negative clamper
Another application of diode circuit which used to clip a portion of signal voltages above or below certain levels.	Diode Limiter
A diode clamper that inserts a positive dc level in the output waveform.	Positive clamper
A special purpose diode which consists of heavily doped p and n regions separated by an intrinsic region.	PIN diode
An American Physicist who first describe the properties of breakdown voltage.	Clarence Melvin Zener
It has a small transparent window that allows light to strike the pn junction.	Photodiode
A special purpose diode uses graded doping where the doping level of the semiconductive materials is reduced as the pn junction is approached.	Step-recovery diode
Another name of constant-current diode.	Current regulator diode
It is used as a dc-controlled microwave switch operated by rapid changes in bias or as a modulating device that takes advantage of the variable forward-resistance characteristic.	PIN diode
A semiconductor operates in the reverse-breakdown region and provides stable reference voltages	Zener diode
High-current diodes used primarily in high-frequency and fast-switching applications.	Schottky diode
Special purpose diode that is monochromatic and also emits coherent light.	Laser diode
It is also known as tuning diodes.	Varactor diode
The two basic methods to turn off the SCR.	Anode current interruption and forced commutation
Another name is SUS.	Shockley diode
What are the terminals of SCS?	Cathode gate, anode gate, anode and cathode
The SCS means ________________.	Silicon controlled switch
Another name is SUS.	Shockley diode
What does UJT means?	Unijunction transistor
The inventor of Shockley diode.	William Shockley
These are family of devices constructed of four semiconductor layers.	Thyristors
It is a two-terminal four-layer semiconductor device that conducts current in either direction when activated.	Diac
It is a two-terminal four-layer semiconductor device that conducts current in either direction when activated	Diac
Type of MOSFET that can operate in either enhancement mode or depletion mode.	Depletion MOSFET
It is another name for MOSFET because of the polycrystalline silicon used instead of metal for the gate materials.	IGFET
The two types of JFET.	N-channel and P-channel
This term refers to the depletion region formed in the channel of a FET because of the voltage imposed on the gate.	Field-effect
The _____________ produces a depletion region along the pn junction.	Reverse-biased
The VGS must be __________ to have channel conductivity in n-channel E-MOSFETS in enhancement mode,	Positive
A type of FET that operates with a reverse-biased pn junction to control current in a channel.	JFET
What is the meaning of JFET?	Junction field-effect transistor
The meaning of MOSFET.	Metal Oxide Semiconductor Field Effect Transistor
A type of input signal mode wherein either one signal is applied to an input with the other input grounded or two opposite-polarity signals are applied to the inputs.	Differential mode
The JFET operates as a	Voltage-controlled, constant-current device
It is a four-terminal thyristor that has two gate terminals that are used to trigger the device on and off.	SCS
These are the two types of JFET.	N-channel and P-channel
It is a two-terminal four-layer semiconductor device that conducts current in either direction when activated.	Diac
It is the difference of the input bias currents, expressed as an absolute value.	Input offset current
The three terminals of SCR.	Anode, cathode and gate
A device that is like a diac with a gate terminal.	Triac
It symbolizes the broken lines of E-MOSFETs.	Absence of a physical channel
It is a two-terminal four-layer semiconductor device that conducts current in either direction when activated.	Diac
It has a single pn junction and therefore, does not belong to the thyristor family.	UJT
The three terminals of SCR.	Anode, cathode and gate
The JFET three terminals.	Drain, source and gate
A 4-layer pnpn device similar to Shockley diode except it has three terminals.	SCR
To have channel conductivity in n-channel E-MOSFETS in enhancement mode, The VGS must be __________.	Positive
The four terminals of SCS.	Cathode gate, anode gate, anode and cathode
This term refers to the depletion region formed in the channel of a FET because of the voltage imposed on the gate.	Field-effect
A device that is like a diac with a gate terminal.	Triac
The total resistance between the base terminals.	Interbase resistance
A mode wherein either one signal is applied to an input with the other input grounded or two opposite-polarity signals are applied to the inputs.	Differential mode
The 4-layer diode.	Shockley diode
The two main types of field effect transistor.	JFET and MOSFET
Also known as the 4-layer diode.	Shockley diode
The configuration that has high input impedance and low output impedance.	Common Collector Configuration
What does SCS means?	Silicon controlled switch
The total resistance between the base terminals.	Interbase resistance
The resistance from the output.	Output impedance
What JFET stands for?	Junction field-effect transistor
The JFET operates as a _______________.	Voltage-controlled, constant-current device
What is the meaning of JFET?	Junction field-effect transistor
What does UJT means?	Unijunction transistor
A single pn junction device and therefore, does not belong to the thyristor family.	UJT
The _____________ produces a depletion region along the pn junction.	Reverse-biased
The JFET always operates with the gate-source on junction _____________.	Reversed-biased
The differential dc voltage required between the inputs to force the output to 0 V.	Input offset voltage
The VGS must be __________ to have channel conductivity in n-channel E-MOSFETS in enhancement mode,	Positive
It is a field-effect transistor that has no pn junction.	MOSFET
A type of FET that operates with a reverse-biased pn junction to control current in a channel.	JFET
These are family of devices constructed of four semiconductor layers.	Thyristors
A four-terminal thyristor that has two gate terminals that are used to trigger the device on and off	SCS
Type of MOSFET that operates only in enhancement mode.	Depletion MOSFET (WRONG)
The value of the voltage gain of a Common Base Configuration.	Low (WRONG)
Two basic methods to turn off the SCR.	Anode current interruption and forced commutation
A type of FET that operates with a reverse-biased pn junction to control current in a channel.	JFET
A 4-layer pnpn device similar to Shockley diode except it has three terminals.	SCR
The inventor of Shockley diode.	William Shockley
It is a field-effect transistor that has no pn junction.	MOSFET
Another name is SUS.	Shockley diode
What are the terminals of UJT?	Emitter, base 1 and base 2
The transistor configuration that has a 180 out of phase relationship.	Common Emitter Configuration

 

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