g6 - circuit components 1 g6 - circuit components [3 exam question - 3 groups] g6a - resistors;...

G6 - Circuit Components1

G6 - CIRCUIT COMPONENTS G6 - CIRCUIT COMPONENTS [3 exam question - 3 groups][3 exam question - 3 groups]

G6A - Resistors; capacitors; inductorsG6A - Resistors; capacitors; inductors

G6B - Rectifiers; solid state diodes and transistors;G6B - Rectifiers; solid state diodes and transistors; vacuum tubes; batteries vacuum tubes; batteries

G6C - Analog and digital integrated circuits (IC’s); G6C - Analog and digital integrated circuits (IC’s); microprocessors; memory; I/O devices; microprocessors; memory; I/O devices; microwave IC’s (MMIC’s ); display devices microwave IC’s (MMIC’s ); display devices

ResistorsResistors



Resistor RatingsResistor Ratings

CapacitorsCapacitors


Electrolyte capacitors(polarized)

Ceramic capacitors

InductorsInductors


DiodeDiode


Electronic “valve”, used e.g. in rectifiersElectronic “valve”, used e.g. in rectifiers

Mostly made of Si, GaMostly made of Si, Ga

Different types: PN diodes, SchottkyDifferent types: PN diodes, Schottky

G6A01 Which of the following is an G6A01 Which of the following is an important characteristic for capacitors important characteristic for capacitors used to filter the DC output of a switching used to filter the DC output of a switching power supply?power supply?

A. Low equivalent series resistanceA. Low equivalent series resistance

B. High equivalent series resistanceB. High equivalent series resistance

C. Low Temperature coefficientC. Low Temperature coefficient

D. High Temperature coefficientD. High Temperature coefficient

7 G6 - Circuit Components

G6A01 Which of the following is an G6A01 Which of the following is an important characteristic for capacitors important characteristic for capacitors used to filter the DC output of a switching used to filter the DC output of a switching power supply?power supply?

A. Low equivalent series resistanceA. Low equivalent series resistance

B. High equivalent series resistanceB. High equivalent series resistance

C. Low Temperature coefficientC. Low Temperature coefficient

D. High Temperature coefficientD. High Temperature coefficient


G6A02 Which of the following types of G6A02 Which of the following types of capacitors are often used in power supply capacitors are often used in power supply circuits to filter the rectified AC?circuits to filter the rectified AC?

A. Disc ceramicA. Disc ceramic

B. Vacuum variableB. Vacuum variable

C. MicaC. Mica

D. ElectrolyticD. Electrolytic


G6A03 Which of the following is an G6A03 Which of the following is an advantage of ceramic capacitors as advantage of ceramic capacitors as compared to other types of capacitors?compared to other types of capacitors?

A. Tight toleranceA. Tight tolerance

B. High stabilityB. High stability

C. High capacitance for given volumeC. High capacitance for given volume

D. Comparatively low costD. Comparatively low cost


G6A03 Which of the following is an G6A03 Which of the following is an advantage of ceramic capacitors as advantage of ceramic capacitors as compared to other types of capacitors?compared to other types of capacitors?


B. High stabilityB. High stability


D. Comparatively low costD. Comparatively low cost


G6A04 Which of the following is an G6A04 Which of the following is an advantage of an electrolytic capacitor?advantage of an electrolytic capacitor?


B. Non-polarizedB. Non-polarized


D. Inexpensive RF capacitorD. Inexpensive RF capacitor


G6A05 Which of the following is one G6A05 Which of the following is one effect of lead inductance in a capacitor effect of lead inductance in a capacitor used at VHF and above?used at VHF and above?

A. Effective capacitance may be reducedA. Effective capacitance may be reduced

B. Voltage rating may be reducedB. Voltage rating may be reduced

C. ESR may be reducedC. ESR may be reduced

D. The polarity of the capacitor might become D. The polarity of the capacitor might become reversedreversed


G6A06 What will happen to the resistance G6A06 What will happen to the resistance if the temperature of a resistor is if the temperature of a resistor is increased?increased?

A. It will change depending on the resistor’s A. It will change depending on the resistor’s reactance coefficientreactance coefficient

B. It will stay the sameB. It will stay the same

C. It will change depending on the resistor's C. It will change depending on the resistor's temperature coefficienttemperature coefficient

D. It will become time dependentD. It will become time dependent


G6A07 Which of the following is a reason G6A07 Which of the following is a reason not to use wire-wound resistors in an RF not to use wire-wound resistors in an RF circuit?circuit?

A. The resistor's tolerance value would not be A. The resistor's tolerance value would not be adequate for such a circuitadequate for such a circuit

B. The resistor's inductance could make circuit B. The resistor's inductance could make circuit performance unpredictableperformance unpredictable

C. The resistor could overheatC. The resistor could overheat

D. The resistor's internal capacitance would D. The resistor's internal capacitance would detune the circuitdetune the circuit


G6A07 Which of the following is a reason G6A07 Which of the following is a reason not to use wire-wound resistors in an RF not to use wire-wound resistors in an RF circuit?circuit?

A. The resistor's tolerance value would not be A. The resistor's tolerance value would not be adequate for such a circuitadequate for such a circuit

B. The resistor's inductance could make B. The resistor's inductance could make circuit performance unpredictablecircuit performance unpredictable

C. The resistor could overheatC. The resistor could overheat

D. The resistor's internal capacitance would D. The resistor's internal capacitance would detune the circuitdetune the circuit


G6A08 Which of the following describes a G6A08 Which of the following describes a thermistor?thermistor?

A. A resistor that is resistant to changes in A. A resistor that is resistant to changes in value with temperature variationsvalue with temperature variations

B. A device having a specific change in B. A device having a specific change in resistance with temperature variationsresistance with temperature variations

C. A special type of transistor for use at very C. A special type of transistor for use at very cold temperaturescold temperatures

D. A capacitor that changes value with D. A capacitor that changes value with temperaturetemperature


G6A09 What is an advantage of using a G6A09 What is an advantage of using a ferrite core toroidal inductor?ferrite core toroidal inductor?

A. Large values of inductance may be obtainedA. Large values of inductance may be obtained

B. The magnetic properties of the core may be B. The magnetic properties of the core may be optimized for a specific range of frequenciesoptimized for a specific range of frequencies

C. Most of the magnetic field is contained in C. Most of the magnetic field is contained in the corethe core

D. All of these choices are correctD. All of these choices are correct


G6A09 What is an advantage of using a G6A09 What is an advantage of using a ferrite core toroidal inductor?ferrite core toroidal inductor?

A. Large values of inductance may be obtainedA. Large values of inductance may be obtained

B. The magnetic properties of the core may be B. The magnetic properties of the core may be optimized for a specific range of frequenciesoptimized for a specific range of frequencies

C. Most of the magnetic field is contained in C. Most of the magnetic field is contained in the corethe core



G6A10 How should the winding axes of G6A10 How should the winding axes of solenoid inductors be placed to minimize solenoid inductors be placed to minimize their mutual inductance?their mutual inductance?

A. In lineA. In line

B. Parallel to each otherB. Parallel to each other

C. At right anglesC. At right angles

D. InterleavedD. Interleaved


G6A11 Why would it be important to G6A11 Why would it be important to minimize the mutual inductance between minimize the mutual inductance between two inductors?two inductors?

A. To increase the energy transfer between A. To increase the energy transfer between circuitscircuits

B. To reduce unwanted coupling between B. To reduce unwanted coupling between circuitscircuits

C. To reduce conducted emissionsC. To reduce conducted emissions

D. To increase the self-resonant frequency of D. To increase the self-resonant frequency of the inductorsthe inductors


G6A12 What is a common name for an G6A12 What is a common name for an inductor used to help smooth the DC inductor used to help smooth the DC output from the rectifier in a conventional output from the rectifier in a conventional power supply?power supply?

A. Back EMF chokeA. Back EMF choke

B. Repulsion coilB. Repulsion coil

C. Charging inductorC. Charging inductor

D. Filter chokeD. Filter choke


G6A13 What is an effect of inter-turn G6A13 What is an effect of inter-turn capacitance in an inductor?capacitance in an inductor?

A. The magnetic field may become invertedA. The magnetic field may become inverted

B. The inductor may become self resonant at B. The inductor may become self resonant at some frequenciessome frequencies

C. The permeability will increaseC. The permeability will increase

D. The voltage rating may be exceededD. The voltage rating may be exceeded


G6A13 What is an effect of inter-turn G6A13 What is an effect of inter-turn capacitance in an inductor?capacitance in an inductor?

A. The magnetic field may become invertedA. The magnetic field may become inverted

B. The inductor may become self resonant B. The inductor may become self resonant at some frequenciesat some frequencies

C. The permeability will increaseC. The permeability will increase

D. The voltage rating may be exceededD. The voltage rating may be exceeded


Vacuum tubesVacuum tubes


G6B01 What is the peak-inverse-voltage G6B01 What is the peak-inverse-voltage rating of a rectifier?rating of a rectifier?

A. The maximum voltage the rectifier will A. The maximum voltage the rectifier will handle in the conducting directionhandle in the conducting direction

B. 1.4 times the AC frequencyB. 1.4 times the AC frequency

C. The maximum voltage the rectifier will C. The maximum voltage the rectifier will handle in the non-conducting directionhandle in the non-conducting direction

D. 2.8 times the AC frequencyD. 2.8 times the AC frequency


G6B02 What are two major ratings that G6B02 What are two major ratings that must not be exceeded for silicon diode must not be exceeded for silicon diode rectifiers?rectifiers?

A. Peak inverse voltage; average forward A. Peak inverse voltage; average forward currentcurrent

B. Average power; average voltageB. Average power; average voltage

C. Capacitive reactance; avalanche voltageC. Capacitive reactance; avalanche voltage

D. Peak load impedance; peak voltageD. Peak load impedance; peak voltage


G6B03 What is the approximate junction G6B03 What is the approximate junction threshold voltage of a germanium diode?threshold voltage of a germanium diode?

A. 0.1 voltA. 0.1 volt

B. 0.3 voltsB. 0.3 volts

C. 0.7 voltsC. 0.7 volts

D. 1.0 voltsD. 1.0 volts


G6B03 What is the approximate junction G6B03 What is the approximate junction threshold voltage of a germanium diode?threshold voltage of a germanium diode?






G6B04 When two or more diodes are G6B04 When two or more diodes are connected in parallel to increase current connected in parallel to increase current handling capacity, what is the purpose of handling capacity, what is the purpose of the resistor connected in series with each the resistor connected in series with each diode?diode?

A. To ensure the thermal stability of the power A. To ensure the thermal stability of the power supplysupply

B. To regulate the power supply output voltageB. To regulate the power supply output voltage

C. To ensure that one diode doesn't carry most C. To ensure that one diode doesn't carry most of the currentof the current

D. To act as an inductorD. To act as an inductor


G6B04 When two or more diodes are G6B04 When two or more diodes are connected in parallel to increase current connected in parallel to increase current handling capacity, what is the purpose of handling capacity, what is the purpose of the resistor connected in series with each the resistor connected in series with each diode?diode?

A. To ensure the thermal stability of the power A. To ensure the thermal stability of the power supplysupply

B. To regulate the power supply output voltageB. To regulate the power supply output voltage

C. To ensure that one diode doesn't carry C. To ensure that one diode doesn't carry most of the currentmost of the current

D. To act as an inductorD. To act as an inductor


G6B05 What is the approximate junction G6B05 What is the approximate junction threshold voltage of a conventional silicon threshold voltage of a conventional silicon diode?diode?






G6B06 Which of the following is an G6B06 Which of the following is an advantage of using a Schottky diode in an advantage of using a Schottky diode in an RF switching circuit as compared to a RF switching circuit as compared to a standard silicon diode?standard silicon diode?

A. Lower capacitanceA. Lower capacitance

B. Lower inductanceB. Lower inductance

C. Longer switching timesC. Longer switching times

D. Higher breakdown voltageD. Higher breakdown voltage


G6B07 What are the stable operating G6B07 What are the stable operating points for a bipolar transistor used as a points for a bipolar transistor used as a switch in a logic circuit?switch in a logic circuit?

A. Its saturation and cut-off regionsA. Its saturation and cut-off regions

B. Its active region (between the cut-off and B. Its active region (between the cut-off and saturation regions)saturation regions)

C. Its peak and valley current pointsC. Its peak and valley current points

D. Its enhancement and deletion modesD. Its enhancement and deletion modes


G6B08 Why must the cases of some large G6B08 Why must the cases of some large power transistors be insulated from power transistors be insulated from ground?ground?

A. To increase the beta of the transistorA. To increase the beta of the transistor

B. To improve the power dissipation capabilityB. To improve the power dissipation capability

C. To reduce stray capacitanceC. To reduce stray capacitance

D. To avoid shorting the collector or drain D. To avoid shorting the collector or drain voltage to groundvoltage to ground


G6B09 Which of the following describes G6B09 Which of the following describes the construction of a MOSFET?the construction of a MOSFET?

A. The gate is formed by a back-biased junctionA. The gate is formed by a back-biased junction

B. The gate is separated from the channel with B. The gate is separated from the channel with a thin insulating layera thin insulating layer

C. The source is separated from the drain by a C. The source is separated from the drain by a thin insulating layerthin insulating layer

D. The source is formed by depositing metal on D. The source is formed by depositing metal on siliconsilicon


G6B09 Which of the following describes G6B09 Which of the following describes the construction of a MOSFET?the construction of a MOSFET?

A. The gate is formed by a back-biased junctionA. The gate is formed by a back-biased junction

B. The gate is separated from the channel B. The gate is separated from the channel with a thin insulating layerwith a thin insulating layer

C. The source is separated from the drain by a C. The source is separated from the drain by a thin insulating layerthin insulating layer

D. The source is formed by depositing metal on D. The source is formed by depositing metal on siliconsilicon


G6B10 Which element of a triode vacuum G6B10 Which element of a triode vacuum tube is used to regulate the flow of tube is used to regulate the flow of electrons between cathode and plate?electrons between cathode and plate?

A. Control gridA. Control grid

B. HeaterB. Heater

C. Screen GridC. Screen Grid

D. Trigger electrodeD. Trigger electrode


G6B11 Which of the following solid state G6B11 Which of the following solid state devices is most like a vacuum tube in its devices is most like a vacuum tube in its general operating characteristics?general operating characteristics?

A. A bipolar transistorA. A bipolar transistor

B. A Field Effect TransistorB. A Field Effect Transistor

C. A tunnel diodeC. A tunnel diode

D. A varistorD. A varistor


G6B12 What is the primary purpose of a G6B12 What is the primary purpose of a screen grid in a vacuum tube?screen grid in a vacuum tube?

A. To reduce grid-to-plate capacitanceA. To reduce grid-to-plate capacitance

B. To increase efficiencyB. To increase efficiency

C. To increase the control grid resistanceC. To increase the control grid resistance

D. To decrease plate resistanceD. To decrease plate resistance


G6B13 What is an advantage of the low G6B13 What is an advantage of the low internal resistance of nickel-cadmium internal resistance of nickel-cadmium batteries?batteries?

A. Long lifeA. Long life

B. High discharge currentB. High discharge current

C. High voltageC. High voltage

D. Rapid rechargeD. Rapid recharge


G6B14 What is the minimum allowable G6B14 What is the minimum allowable discharge voltage for maximum life of a discharge voltage for maximum life of a standard 12 volt lead acid battery?standard 12 volt lead acid battery?

A. 6 voltsA. 6 volts



D. 12 voltsD. 12 volts


G6B15 When is it acceptable to recharge G6B15 When is it acceptable to recharge a carbon-zinc primary cell?a carbon-zinc primary cell?

A. As long as the voltage has not been allowed A. As long as the voltage has not been allowed to drop below 1.0 voltto drop below 1.0 volt

B. When the cell is kept warm during the B. When the cell is kept warm during the recharging periodrecharging period

C. When a constant current charger is usedC. When a constant current charger is used

D. NeverD. Never


G6C01 Which of the following is an analog G6C01 Which of the following is an analog integrated circuit?integrated circuit?

A. NAND GateA. NAND Gate

B. MicroprocessorB. Microprocessor

C. Frequency CounterC. Frequency Counter

D. Linear voltage regulatorD. Linear voltage regulator


G6C02 What is meant by the term MMIC?G6C02 What is meant by the term MMIC?

A. Multi Megabyte Integrated CircuitA. Multi Megabyte Integrated Circuit

B. Monolithic Microwave Integrated CircuitB. Monolithic Microwave Integrated Circuit

C. Military-specification Manufactured C. Military-specification Manufactured Integrated CircuitIntegrated Circuit

D. Mode Modulated Integrated CircuitD. Mode Modulated Integrated Circuit


G6C02 What is meant by the term MMIC?G6C02 What is meant by the term MMIC?

A. Multi Megabyte Integrated CircuitA. Multi Megabyte Integrated Circuit

B. Monolithic Microwave Integrated CircuitB. Monolithic Microwave Integrated Circuit

C. Military-specification Manufactured C. Military-specification Manufactured Integrated CircuitIntegrated Circuit

D. Mode Modulated IntegratedD. Mode Modulated IntegratedCircuitCircuit


G6C03 Which of the following is an G6C03 Which of the following is an advantage of CMOS integrated circuits advantage of CMOS integrated circuits compared to TTL integrated circuits?compared to TTL integrated circuits?

A. Low power consumptionA. Low power consumption

B. High power handling capabilityB. High power handling capability

C. Better suited for RF amplificationC. Better suited for RF amplification

D. Better suited for power supply regulationD. Better suited for power supply regulation


G6C03 Which of the following is an G6C03 Which of the following is an advantage of CMOS integrated circuits advantage of CMOS integrated circuits compared to TTL integrated circuits?compared to TTL integrated circuits?


B. High power handling capabilityB. High power handling capability

C. Better suited for RF amplificationC. Better suited for RF amplification

D. Better suited for power supply regulationD. Better suited for power supply regulation


G6C04 What is meant by the term ROM?G6C04 What is meant by the term ROM?

A. Resistor Operated MemoryA. Resistor Operated Memory

B. Read Only MemoryB. Read Only Memory

C. Random Operational MemoryC. Random Operational Memory

D. Resistant to Overload MemoryD. Resistant to Overload Memory


G6C05 What is meant when memory is G6C05 What is meant when memory is characterized as “non-volatile”?characterized as “non-volatile”?

A. It is resistant to radiation damageA. It is resistant to radiation damage

B. It is resistant to high temperaturesB. It is resistant to high temperatures

C. The stored information is maintained even if C. The stored information is maintained even if power is removedpower is removed

D. The stored information cannot be changed D. The stored information cannot be changed once writtenonce written


G6C05 What is meant when memory is G6C05 What is meant when memory is characterized as “non-volatile”?characterized as “non-volatile”?

A. It is resistant to radiation damageA. It is resistant to radiation damage

B. It is resistant to high temperaturesB. It is resistant to high temperatures

C. The stored information is maintained C. The stored information is maintained even if power is removedeven if power is removed

D. The stored information cannot be changed D. The stored information cannot be changed once writtenonce written


G6C06 Which of the following describes G6C06 Which of the following describes an integrated circuit operational an integrated circuit operational amplifier?amplifier?

A. DigitalA. Digital

B. MMICB. MMIC

C. Programmable LogicC. Programmable Logic

D. AnalogD. Analog


G6C07 What is one disadvantage of an G6C07 What is one disadvantage of an incandescent indicator compared to an incandescent indicator compared to an LED?LED?


B. High speedB. High speed

C. Long lifeC. Long life

D. High power consumptionD. High power consumption


G6C08 How is an LED biased when G6C08 How is an LED biased when emitting light?emitting light?

A. Beyond cutoffA. Beyond cutoff

B. At the Zener voltageB. At the Zener voltage

C. Reverse BiasedC. Reverse Biased

D. Forward BiasedD. Forward Biased


G6C09 Which of the following is a G6C09 Which of the following is a characteristic of a liquid crystal display?characteristic of a liquid crystal display?

A. It requires ambient or back lightingA. It requires ambient or back lighting

B. It offers a wide dynamic rangeB. It offers a wide dynamic range

C. It has a wide viewing angleC. It has a wide viewing angle



G6C10 What two devices in an Amateur G6C10 What two devices in an Amateur Radio station might be connected using a Radio station might be connected using a USB interface?USB interface?

A. Computer and transceiverA. Computer and transceiver

B. Microphone and transceiverB. Microphone and transceiver

C. Amplifier and antennaC. Amplifier and antenna

D. Power supply and amplifierD. Power supply and amplifier


G6C11 What is a microprocessor?G6C11 What is a microprocessor?

A. A low power analog signal processor used as A. A low power analog signal processor used as a microwave detectora microwave detector

B. A computer on a single integrated circuitB. A computer on a single integrated circuit

C. A microwave detector, amplifier, and local C. A microwave detector, amplifier, and local oscillator on a single integrated circuitoscillator on a single integrated circuit

D. A low voltage amplifier used in a microwave D. A low voltage amplifier used in a microwave transmitter modulator stagetransmitter modulator stage


G6C12 Which of the following connectors G6C12 Which of the following connectors would be a good choice for a serial data would be a good choice for a serial data port?port?

A. PL-259A. PL-259

B. Type NB. Type N

C. Type SMAC. Type SMA

D. DE-9D. DE-9


G6C13 Which of these connector types is G6C13 Which of these connector types is commonly used for RF service at commonly used for RF service at frequencies up to 150 MHz?frequencies up to 150 MHz?

A. OctalA. Octal

B. RJ-11B. RJ-11

C. PL-259C. PL-259

D. DB-25D. DB-25


G6C14 Which of these connector types is G6C14 Which of these connector types is commonly used for audio signals in commonly used for audio signals in Amateur Radio stations?Amateur Radio stations?

A. PL-259A. PL-259

B. BNCB. BNC

C. RCA PhonoC. RCA Phono

D. Type ND. Type N


G6C15 What is the main reason to use G6C15 What is the main reason to use keyed connectors instead of non-keyed keyed connectors instead of non-keyed types?types?

A. Prevention of use by unauthorized personsA. Prevention of use by unauthorized persons

B. Reduced chance of incorrect matingB. Reduced chance of incorrect mating

C. Higher current carrying capacityC. Higher current carrying capacity



G6C16 Which of the following describes a G6C16 Which of the following describes a type-N connector?type-N connector?

A. A moisture-resistant RF connector useful to A. A moisture-resistant RF connector useful to 10 GHz10 GHz

B. A small bayonet connector used for data B. A small bayonet connector used for data circuitscircuits

C. A threaded connector used for hydraulic C. A threaded connector used for hydraulic systemssystems

D. An audio connector used in surround-sound D. An audio connector used in surround-sound installationsinstallations


G6C16 Which of the following describes a G6C16 Which of the following describes a type-N connector?type-N connector?

A. A moisture-resistant RF connector useful A. A moisture-resistant RF connector useful to 10 GHzto 10 GHz

B. A small bayonet connector used for data B. A small bayonet connector used for data circuitscircuits

C. A threaded connector used for hydraulic C. A threaded connector used for hydraulic systemssystems

D. An audio connector used in surround-sound D. An audio connector used in surround-sound installationsinstallations


G6C17 What is the general description of G6C17 What is the general description of a DIN type connector?a DIN type connector?

A. A special connector for microwave A. A special connector for microwave interfacinginterfacing

B. A DC power connector rated for currents B. A DC power connector rated for currents between 30 and 50 amperesbetween 30 and 50 amperes

C. A family of multiple circuit connectors C. A family of multiple circuit connectors suitable for audio and control signalssuitable for audio and control signals

D. A special watertight connector for use in D. A special watertight connector for use in marine applicationsmarine applications


G6C18 What is a type SMA connector?G6C18 What is a type SMA connector?

A. A large bayonet-type connector usable at A. A large bayonet-type connector usable at power levels in excess of 1 KWpower levels in excess of 1 KW

B. A small threaded connector suitable for B. A small threaded connector suitable for signals up to several GHzsignals up to several GHz

C. A connector designed for serial multiple C. A connector designed for serial multiple access signalsaccess signals

D. A type of push-on connector intended for D. A type of push-on connector intended for high-voltage applicationshigh-voltage applications



G6 - CIRCUIT COMPONENTS G6 - CIRCUIT COMPONENTS [3 exam question - 3 groups][3 exam question - 3 groups]

g6 - circuit components 1 g6 - circuit components [3 exam question - 3 groups] g6a - resistors;...

Documents

following types of capacitors

high capacitance

high stabilityc

electrolytic capacitor

high temperature coefficient

low cost

low temperature coefficientd

tight toleranceb