All 23 Ham Radio General Class questions for G6 Circuit Components with the correct answers marked, from the official 2023-2027 question pool. Test yourself with the free practice exam.
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 batteries with low internal resistance?
A. Long life
B. High discharge current ✓
C. High voltage
D. Rapid recharge
G6A03
What is the approximate forward threshold voltage of a germanium diode?
A. 0.1 volt
B. 0.3 volts ✓
C. 0.7 volts
D. 1.0 volts
G6A04
Which of the following is characteristic 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
G6A05
What is the approximate forward threshold voltage of a silicon junction diode?
A. 0.1 volt
B. 0.3 volts
C. 0.7 volts ✓
D. 1.0 volts
G6A06
Why should wire-wound resistors not be used in RF circuits?
A. The resistor’s tolerance value would not be adequate
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
G6A07
What are the operating points for a bipolar transistor used as a switch?
A. Saturation and cutoff ✓
B. The active region (between cutoff and saturation)
C. Peak and valley current points
D. Enhancement and depletion modes
G6A08
Which of the following is characteristic of low voltage ceramic capacitors?
A. Tight tolerance
B. High stability
C. High capacitance for given volume
D. Comparatively low cost ✓
G6A09
Which of the following describes MOSFET construction?
A. The gate is formed by a back-biased junction
B. The gate is separated from the channel by 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 vacuum tube regulates the flow of electrons between cathode and plate?
A. Control grid ✓
B. Suppressor grid
C. Screen grid
D. Trigger electrode
G6A11
What happens when an inductor is operated above its self-resonant frequency?
A. Its reactance increases
B. Harmonics are generated
C. It becomes capacitive ✓
D. Catastrophic failure is likely
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
G6B01
What determines the performance of a ferrite core at different frequencies?
A. Its conductivity
B. Its thickness
C. The composition, or “mix,” of materials used ✓
D. The ratio of outer diameter to inner diameter
G6B02
What is meant by the term MMIC?
A. Multi-Mode Integrated Circuit
B. Monolithic Microwave Integrated Circuit ✓
C. Metal Monolayer 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 a typical upper frequency limit for low SWR operation of 50-ohm BNC connectors?
A. 50 MHz
B. 500 MHz
C. 4 GHz ✓
D. 40 GHz
G6B05
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 these choices are correct ✓
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 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 low noise figure VHF connector
D. A nickel plated version of the PL-259
G6B08
How is an LED biased when emitting light?
A. In the tunnel-effect region
B. At the Zener voltage
C. Reverse biased
D. Forward biased ✓
G6B10
How does a ferrite bead or core reduce common-mode RF current on the shield of a coaxial cable?
A. By creating an impedance in the current’s path ✓
B. It converts common-mode current to differential mode current
C. By creating an out-of-phase current to cancel the common-mode current
D. Ferrites expel magnetic fields
G6B11
What is an SMA connector?
A. A type-S to type-M adaptor
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
G6B12
Which of these connector types is commonly used for low frequency or dc signal connections to a transceiver?
A. PL-259
B. BNC
C. RCA Phono ✓
D. Type N