Gibilisco Part 3

In a junction FET, the control electrode is usually the:

• Source.
• Emitter.
• Drain.
• Base.
• Gate.

A diode can be used as a frequency multiplier because of its:

• Junction capacitance.
• Nonlinearity.
• Avalanche voltage.
• Forward breakover.
• Charge-carrier concentration.

Which of the following is not a common form of data transmission?

• Parallel modulation.
• Frequency modulation.
• Amplitude modulation.
• Phase modulation.
• Pulse modulation.

A very brief, high-voltage spike on an AC power line is called:

• A surge.
• An arc.
• A transient.
• An avalanche.
• A clamp.

Which of the following is not characteristic of an oscillator?

• Negative feedback.
• Good output-to-input coupling.
• Reasonably high transistor gain.
• AC output.
• Usefulness as a signal generator.

Which layer of the ionosphere absorbs radio signals below about 7 MHz during the daylight hours?

• The F layer.
• The E layer.
• The D layer.
• The C layer.
• The B layer.

The beta of a bipolar transistor is its:

• Current amplification factor.
• Voltage amplification factor.
• Power amplification factor.
• Maximum amplification frequency.
• Optimum amplification frequency.

Which type of component is impractical to fabricate on a silicon chip?

• A capacitor.
• A transistor.
• A diode.
• An inductor.
• Any component can be fabricated on a silicon chip.

The extent to which an oscillator maintains a constant frequency is called its:

• Sensitivity.
• Drift ratio.
• Gain.
• Selectivity.
• Stability.

A Zener diode would most likely be used in:

• A mixer.
• A voltage-controlled oscillator.
• A detector.
• A power supply regulating circuit.
• An oscillator.