Discussion
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- Question
The determination of a digital signal's frequency and waveshape is best accomplished with which test equipment?
Options- A. an oscilloscope
- B. a multimeter
- C. a spectrum analyzer
- D. a frequency generator
- Correct Answer
- an oscilloscope
- 1. In a common-base (C-B) amplifier, the output is 180 degrees out of phase with the input.
Options- A. True
- B. False Discuss
- 2. What is the inductive reactance if the Q of a coil is 60, and the winding resistance is 5 Ω?
Options- A. 0.083 Ω
- B. 12 Ω
- C. 30 Ω
- D. 300 Ω Discuss
- 3. A magnitude comparator outputs the highest or lowest value of its inputs depending on control signals.
Options- A. True
- B. False Discuss
- 4. What is the total power loss if 2 kΩ and 1 kΩ parallel-connected resistors have an IT of 3 mA?
Options- A. 6 µW
- B. 36 µW
- C. 6 mW
- D. 36 mW Discuss
- 5. A test equipment item that has the ability to produce either square, triangular, or sawtooth waveforms is called:
Options- A. a function generator
- B. a radio frequency generator
- C. an audio frequency generator
- D. a frequency meter or counter Discuss
- 6. A BCD code that represents each digit of a decimal number by a binary number derived by adding 3 to its 4-bit true binary value is _________.
Options- A. 9's complement code
- B. excess-3 code
- C. 8421 code
- D. gray code Discuss
- 7. The small amount of ac signal present on the output of a filtering network for a dc power supply is known as ________.
Options- A. pulsating dc
- B. trickle
- C. ripple
- D. waffle Discuss
- 8. An astable multivibrator has two states.
Options- A. True
- B. False Discuss
- 9. Thermal shutdown occurs in an IC regulator if:
Options- A. power dissipation is too high
- B. internal temperature is too high
- C. current through the device is too high
- D. load resistance increases Discuss
- 10. The output of an RL differentiator is taken from across the inductor.
Options- A. True
- B. False Discuss
More questions
Correct Answer: False
Correct Answer: 300 Ω
Correct Answer: False
Correct Answer: 6 mW
Correct Answer: a function generator
Correct Answer: excess-3 code
Correct Answer: ripple
Correct Answer: True
Correct Answer: internal temperature is too high
Correct Answer: True
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