No! An R-S flip-flop is superior to a J-K. TE
D. No! An R-S flip-flop is superior to a J-K. TE
B. The J-K can attain more states.
C. The J-K always has predictable outputs.
16. In positive-edge triggering, the change of state occurs when:
A. The pulse level is high.
B. The pulse level is going from high to low.
C. The pulse level is going from low to high.
D. The pulse level is low.
17. The inputs of an R-S flip-flop are known as:
A. Low and high.
B. Asynchronous.
C. Synchronous.
D. Set and reset.
18. When both inputs of an R-S flip-flop are 0:
A. The outputs stay as they are. ⫽ 0 and ⫺Q ⫽ 1. B. Q ⫽ 1 and ⫺Q ⫽ 0. C. Q
D. The resulting outputs can be absurd.
Quiz 571
19. When both inputs of an R-S flip-flop are 1:
A. The outputs stay as they are. ⫽ 0 and ⫺Q ⫽ 1. B. Q ⫽ 1 and ⫺Q ⫽ 0. C. Q
D. The resulting outputs can be absurd.
20. A frequency synthesizer makes use of
A. An OR gate.
B. A divider.
C. The octal numbering system.
D. The hexadecimal numbering system.
Test: Part Three
Do not refer to the text when taking this test.
1. In a junction FET, the control electrode is usually the:
A. Source.
B. Emitter.
C. Drain.
D. Base.
E. Gate.
2. A diode can be used as a frequency multiplier because of its:
A. Junction capacitance.
B. Nonlinearity.
C. Avalanche voltage.
D. Forward breakover.
E. Charge-carrier concentration.
3. Which of the following is not a common form of data transmission?
A. Parallel modulation.
B. Frequency modulation.
C. Amplitude modulation.
D. Phase modulation.
E. Pulse modulation.
4. A very brief, high-voltage spike on an ac power line is called:
A. A surge.
B. An arc.
C. A transient.
D. An avalanche.
F. A clamp.
Test: Part three 573
5. Which of the following is not characteristic of an oscillator?
A. Negative feedback.
B. Good output-to-input coupling.
C. Reasonably high transistor gain.
D. Ac output.
E. Usefulness as a signal generator.
6. Which layer of the ionosphere absorbs radio signals below about 7 MHz during the daylight hours?
A. The F layer.
B. The E layer.
C. The D layer.
D. The C layer.
E. The B layer.
7. The beta of a bipolar transistor is its:
A. Current amplification factor.
B. Voltage amplification factor.
C. Power amplification factor.
D. Maximum amplification frequency.
E. Optimum amplification frequency.
8. Which type of component is impractical to fabricate on a silicon chip?
A. A capacitor.
B. A transistor.
C. A diode.
D. An inductor.
E. Any component can be fabricated on a silicon chip.
9. The extent to which an oscillator maintains a constant frequency is called its:
A. Sensitivity.
B. Drift ratio.
C. Gain.
D. Selectivity.
E. Stability.
10. A Zener diode would most likely be used in:
A. A mixer.
B. A voltage-controlled oscillator.
C. A detector.
D. A power supply regulating circuit.
E. An oscillator.
574 Test: Part three
11. When the bias in an FET stops the flow of current, the condition is called:
A. Forward breakover.
B. Cutoff.
C. Reverse bias.
D. Pinchoff.
E. Avalanche.
12. A vacuum tube would most likely be found in:
A. The front end of a radio receiver.
B. A high-power radio-frequency linear amplifier.
C. A low-level audio amplifier.
D. A digital computer.
E. Antique radios only.
13. In an N-type semiconductor, the minority carriers are:
A. Electrons.
B. Protons.
C. Holes.
D. Neutrons.
E. Silicon chips.
14. A disadvantage of a half-wave rectifier is that:
A. The voltage is excessive.
B. The current output is low.
C. The output is hard to filter.
D. It needs many diodes.
E. The transformer must have a center tap.
15. A power gain of 30 dB is equivalent to an amplification factor of:
E. None of the above.
16. An amplifier has a dc collector power input of 300 W, and is 75.0 percent efficient. The signal output power is:
D. Variable, depending on the bias.
E. Impossible to determine from this data.
Test: Part three 575
17. When both N-channel and P-channel transistors are found in a metal-oxide- semiconductor-type integrated circuit, the technology is known as:
A. Transistor-transistor logic.