G6 – CIRCUIT COMPONENTS [2 Exam Questions – 2 Groups] 24 Questions Flashcards
“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
C. 10.5 volts
“What is an advantage of batteries with low internal resistance?”
A. Long life
B. High discharge current
C. High voltage
D. Rapid recharge
B. High discharge current
“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
B. 0.3 volts
“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
C. High capacitance for a given volume
“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
C. 0.7 volts
“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
B. The resistor’s inductance could make circuit performance unpredictable
“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
A. Saturation and cutoff
“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
D. Comparatively low cost
“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
B. The gate is separated from the channel by a thin insulating layer
“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
A. Control grid
“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
C. It becomes capacitive
“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
A. To reduce grid-to-plate capacitance
“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
C. The composition, or “mix,” of materials used
“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
B. Monolithic Microwave Integrated Circuit
“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
A. Low power consumption
“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
C. 4 GHz
“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
D. All these choices are correct
“What kind of device is an integrated circuit operational amplifier?”
A. Digital
B. MMIC
C. Programmable Logic
D. Analog
D. Analog
“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
A. A moisture-resistant RF connector useful to 10 GHz
“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
D. Forward biased
“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
B. A small threaded connector suitable for signals up to several GHz
“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
C. RCA Phono
