Discussion
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- Question
The input resistance, Rin of a common-collector amplifier, consists of ____________.
Options- A. Rin = RE × AC Current Gain
- B.
- C. Rin = RE × ɑ
- D. none of the above
- Correct Answer
- Rin = RE × AC Current Gain
- 1. You could increase the time constant of an RC circuit by
Options- A. adding a resistor in parallel with the circuit resistance
- B. adding a capacitor in parallel with the circuit capacitance
- C. increasing the amplitude of the input voltage
- D. exchanging the position of the resistor and capacitor in the circuit Discuss
- 2. The register in the 8085 microprocessor that is used to keep track of the memory address of the next opcode to be run in the program is the ________.
Options- A. stack pointer
- B. program counter
- C. instruction pointer
- D. accumulator Discuss
- 3. Isolation amps are named as such because they are sealed for protection from outside environmental damage.
Options- A. True
- B. False Discuss
- 4. If the gain of a closed-loop inverting amplifier is 3.9, with an input resistor value of 1.6 kilohms, what value of feedback resistor is necessary?
Options- A. 6240 ohms
- B. 2.4 kilohms
- C. 410 ohms
- D. 0.62 kilohms Discuss
- 5. An RL integrator can act as a __________ filter and an RC differentiator can act as a __________ filter.
Options- A. high-pass, high-pass
- B. low-pass, low-pass
- C. high-pass, low pass
- D. low-pass, high-pass Discuss
- 6. A circuit that has an output equal to the algebraic sum of the inputs is called a(n) ______ .
Options- A. integrator amplifier
- B. summing amplifier
- C. differential amplifier
- D. voltage multiplier Discuss
- 7. The ___ of a circuit describes the ability of that circuit to respond to certain frequencies while rejecting all others.
Options- A. bandwidth
- B. selectivity
- C. sensitivity
- D. quality factor Discuss
- 8. Capacitor value markings are usually:
Options- A. alphanumeric
- B. color dabs
- C. standard
- D. white print Discuss
- 9. Test equipment selection enables the technician to both generate signals and:
Options- A. change circuit conditions
- B. inject signals
- C. sense circuit conditions
- D. change signal frequencies Discuss
- 10. The phase difference between sine waves of different frequencies is:
Options- A. equal to their frequency differences
- B. the difference in their fixed time displacement
- C. the same throughout time
- D. constantly changing Discuss
More questions
Correct Answer: adding a capacitor in parallel with the circuit capacitance
Correct Answer: program counter
Correct Answer: False
Correct Answer: 6240 ohms
Correct Answer: low-pass, high-pass
Correct Answer: summing amplifier
Correct Answer: selectivity
Correct Answer: alphanumeric
Correct Answer: sense circuit conditions
Correct Answer: the difference in their fixed time displacement
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