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

1. A 6 volts
2. B 8.5 volts
3. C 10.5 volts
4. D 12 volts

What is an advantage of batteries with low internal resistance?

1. A Long life
2. B High discharge current
3. C High voltage
4. D Rapid recharge

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

1. A 0.1 volt
2. B 0.3 volts
3. C 0.7 volts
4. D 1.0 volts

Which of the following is characteristic of an electrolytic capacitor?

1. A Tight tolerance
2. B Much less leakage than any other type
3. C High capacitance for a given volume
4. D Inexpensive RF capacitor

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

1. A 0.1 volt
2. B 0.3 volts
3. C 0.7 volts
4. D 1.0 volts

Why should wire-wound resistors not be used in RF circuits?

1. A The resistor's tolerance value would not be adequate
2. B The resistor's inductance could make circuit performance unpredictable
3. C The resistor could overheat
4. D The resistor's internal capacitance would detune the circuit

What are the operating points for a bipolar transistor used as a switch?

1. A Saturation and cutoff
2. B The active region (between cutoff and saturation)
3. C Peak and valley current points
4. D Enhancement and depletion modes

Which of the following is characteristic of low voltage ceramic capacitors?

1. A Tight tolerance
2. B High stability
3. C High capacitance for given volume
4. D Comparatively low cost

Which of the following describes MOSFET construction?

1. A The gate is formed by a back-biased junction
2. B The gate is separated from the channel by a thin insulating layer
3. C The source is separated from the drain by a thin insulating layer
4. D The source is formed by depositing metal on silicon

Which element of a vacuum tube regulates the flow of electrons between cathode and plate?

1. A Control grid
2. B Suppressor grid
3. C Screen grid
4. D Trigger electrode

What happens when an inductor is operated above its self-resonant frequency?

1. A Its reactance increases
2. B Harmonics are generated
3. C It becomes capacitive
4. D Catastrophic failure is likely

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

1. A To reduce grid-to-plate capacitance
2. B To increase efficiency
3. C To increase the control grid resistance
4. D To decrease plate resistance