General Class Exam Question Pool- Subelement G-6

Subelement G-1           Subelement G-2          Subelement G-3          Subbelement G-4          Subelement G-5
Subelement G-6           Subelement G-7          Subelement G-8          Subbelement G-9          Subelement G-0

SUBELEMENT G6 – CIRCUIT COMPONENTS [2 Exam Questions – 2 Groups]

 

 

G6A – Resistors; Capacitors; Inductors; Rectifiers; solid state diodes and transistors; vacuum tubes; batteries

 

G6A01 

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

A. 6 volts

B. 8.5 volts

C. 10.5 volts

D. 12 volts

~~

 

 

G6A02 

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

A. Long life

B. High discharge current

C. High voltage

D. Rapid recharge

~~

 

 

G6A03 

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

A. 0.1 volt

B. 0.3 volts

C. 0.7 volts

D. 1.0 volts

~~

 

 

G6A04 

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

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

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

C. When a constant current charger is used

D. Never

~~

 

 

G6A05 

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

A. 0.1 volt

B. 0.3 volts

C. 0.7 volts

D. 1.0 volts

~~

 

 

G6A06 

Which of the following is an advantage of using a Schottky diode in an RF switching circuit rather than a standard silicon diode?

A. Lower capacitance

B. Lower inductance

C. Longer switching times

D. Higher breakdown voltage

~~

 

 

G6A07 

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

A. Its saturation and cutoff regions

B. Its active region (between the cutoff and saturation regions)

C. Its peak and valley current points

D. Its enhancement and depletion modes

~~

 

 

G6A08 

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

A. To increase the beta of the transistor

B. To improve the power dissipation capability

C. To reduce stray capacitance

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

~~

 

 

G6A09 

Which of the following describes the construction of a MOSFET?

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

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

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

D. The source is formed by depositing metal on silicon

~~

 

 

G6A10 

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

A. Control grid

B. Heater

C. Screen Grid

D. Trigger electrode

~~

 

G6A11 

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

A. A bipolar transistor

B. A field effect transistor

C. A tunnel diode

D. A varistor

~~

 

 

G6A12

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

A. To reduce grid-to-plate capacitance

B. To increase efficiency

C. To increase the control grid resistance

D. To decrease plate resistance

~~

 

 

G6A13 

Why is the polarity of applied voltages important for polarized capacitors?

A. Incorrect polarity can cause the capacitor to short-circuit

B. Reverse voltages can destroy the dielectric layer of an electrolytic capacitor

C. The capacitor could overheat and explode

D. All of these choices are correct 

~~

 

 

G6A14 

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

A. Tight tolerance

B. High stability

C. High capacitance for given volume

D. Comparatively low cost

~~

 

 

G6A15

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

A. Tight tolerance

B. Much less leakage than any other type

C. High capacitance for a given volume

D. Inexpensive RF capacitor

~~

 

 

G6A16 

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

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

B. It will stay the same

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

D. It will become time dependent

~~

 

 

G6A17 

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

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

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

C. The resistor could overheat

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

~~

 

 

G6A18 

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

A. Large values of inductance may be obtained

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

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

D. All of these choices are correct

~~

 

 

G6A19 

How should the winding axes of two solenoid inductors be oriented to minimize their mutual inductance?

A. In line

B. Parallel to each other

C. At right angles to each other

D. Interleaved

~~

 

 

 

 

 

 

 

 

G6B - Analog and digital integrated circuits (ICs); microprocessors; memory; I/O devices; microwave ICs (MMICs); display devices 

 

G6B01 

Which of the following is an analog integrated circuit?

A. NAND Gate

B. Microprocessor

C. Frequency Counter

D. Linear voltage regulator

~~

 

 

G6B02 

What is meant by the term MMIC?

A. Multi Megabyte Integrated Circuit

B. Monolithic Microwave Integrated Circuit

C. Military Manufactured Integrated Circuit

D. Mode Modulated Integrated Circuit

~~

 

 

G6B03 

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

A. Low power consumption

B. High power handling capability

C. Better suited for RF amplification

D. Better suited for power supply regulation

~~

 

 

G6B04 

What is meant by the term ROM?

A. Resistor Operated Memory

B. Read Only Memory

C. Random Operational Memory

D. Resistant to Overload Memory

~~

 

 

G6B05 

What is meant when memory is characterized as non-volatile?

A. It is resistant to radiation damage

B. It is resistant to high temperatures

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

D. The stored information cannot be changed once written

~~

 

 

G6B06 

What kind of device is an integrated circuit operational amplifier?

A. Digital

B. MMIC

C. Programmable Logic

D. Analog

~~

 

 

G6B07 

Which of the following is an advantage of an LED indicator compared to an incandescent indicator?

A. Lower power consumption

B. Faster response time

C. Longer life

D. All of these choices are correct

~~

 

 

G6B08 

How is an LED biased when emitting light?

A. Beyond cutoff

B. At the Zener voltage

C. Reverse Biased

D. Forward Biased

~~

 

 

G6B09 

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

A. It requires ambient or back lighting

B. It offers a wide dynamic range

C. It has a wide viewing angle

D. All of these choices are correct

~~

 

 

G6B10 

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

A. Computer and transceiver

B. Microphone and transceiver

C. Amplifier and antenna 

D. Power supply and amplifier

~~

 

 

G6B11 

What is a microprocessor?

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

B. A computer on a single integrated circuit

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

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

~~

 

 

G6B12 

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

A. PL-259

B. Type N

C. Type SMA

D. DE-9

~~

 

 

G6B13 

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

A. Octal

B. RJ-11

C. PL-259

D. DB-25 

~~

 

 

G6B14 

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

A. PL-259 

B. BNC 

C. RCA Phono

D. Type N 

~~

 

 

G6B15 

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

A. Prevention of use by unauthorized persons

B. Reduced chance of incorrect mating

C. Higher current carrying capacity

D. All of these choices are correct

~~

 

 

G6B16 

Which of the following describes a type N connector?

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

B. A small bayonet connector used for data circuits

C. A threaded connector used for hydraulic systems 

D. An audio connector used in surround-sound installations

~~

 

 

G6B17 

What is the general description of a DIN type connector?

A. A special connector for microwave interfacing

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

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

D. A special watertight connector for use in marine applications

~~

 

 

G6B18 

What is a type SMA connector?

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

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

C. A connector designed for serial multiple access signals

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

~~

Subelement G-1           Subelement G-2          Subelement G-3          Subbelement G-4          Subelement G-5
Subelement G-6           Subelement G-7          Subelement G-8          Subbelement G-9          Subelement G-0
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