G6A – Resistors; capacitors; inductors; rectifiers; solid-state diodes and transistors; vacuum tubes; batteries

- [[G6A01]] (C)
What is the minimum allowable discharge voltage for maximum life of a standard 12-volt lead-acid battery? #card
	- A. 6 volts
	- B. 8.5 volts
	- C. 10.5 volts
	- D. 12 volts
- [[G6A02]] (B)
What is an advantage of batteries with low internal resistance? #card
	- A. Long life
	- B. High discharge current
	- C. High voltage
	- D. Rapid recharge
- [[G6A03]] (B)
What is the approximate forward threshold voltage of a germanium diode? #card
	- A. 0.1 volt
	- B. 0.3 volts
	- C. 0.7 volts
	- D. 1.0 volts
- [[G6A04]] (C)
Which of the following is characteristic of an electrolytic capacitor? #card
	- A. Tight tolerance
	- B. Much less leakage than any other type
	- C. High capacitance for a given volume
	- D. Inexpensive RF capacitor
- [[G6A05]] (C)
What is the approximate forward threshold voltage of a silicon junction diode? #card
	- A. 0.1 volt
	- B. 0.3 volts
	- C. 0.7 volts
	- D. 1.0 volts
- [[G6A06]] (B)
Why should wire-wound resistors not be used in RF circuits? #card
	- 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]] (A)
What are the operating points for a bipolar transistor used as a switch? #card
	- A. Saturation and cutoff
	- B. The active region (between cutoff and saturation)
	- C. Peak and valley current points
	- D. Enhancement and depletion modes
- [[G6A08]] (D)
Which of the following is characteristic of low voltage ceramic capacitors? #card
	- A. Tight tolerance
	- B. High stability
	- C. High capacitance for given volume
	- D. Comparatively low cost
- [[G6A09]] (B)
Which of the following describes MOSFET construction? #card
	- 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]] (A)
Which element of a vacuum tube regulates the flow of electrons between cathode and plate? #card
	- A. Control grid
	- B. Suppressor grid
	- C. Screen grid
	- D. Trigger electrode
- [[G6A11]] (C)
What happens when an inductor is operated above its self-resonant frequency? #card
	- A. Its reactance increases
	- B. Harmonics are generated
	- C. It becomes capacitive
	- D. Catastrophic failure is likely
- [[G6A12]] (A)
What is the primary purpose of a screen grid in a vacuum tube? #card
	- A. To reduce grid-to-plate capacitance
	- B. To increase efficiency
	- C. To increase the control grid resistance
	- D. To decrease plate resistance