Digital Signal Processing problems
- 1. In a binary-weighted-input digital-to-analog converter, the values of the input resistors are chosen to be proportional to the binary weights of the corresponding input bits.
Options- A. True
- B. False Discuss
Correct Answer: True
- 2. Successive-approximation is perhaps the most widely used method of A/D conversion.
Options- A. True
- B. False Discuss
Correct Answer: True
- 3. Incorrect codes are a form of output error for a DAC.
Options- A. True
- B. False Discuss
Correct Answer: False
- 4. Digital signal processors must be programmed to perform specific tasks.
Options- A. True
- B. False Discuss
Correct Answer: True
- 5. The ADC0804 is an example of a successive-approximation ADC.
Options- A. True
- B. False Discuss
Correct Answer: True
- 6. The principal advantage of the three-wire handshake on the GPIB is that it ________.
Options- A. is faster than two-wire methods
- B. allows fast and slow listeners on the same bus
- C. can be used over very long distances
- D. is compatible with the RS232C standard Discuss
Correct Answer: allows fast and slow listeners on the same bus
- 7. An offset error in a DAC will show up as an incorrect analog output ________.
Options- A. only for higher value inputs
- B. only for lower value inputs
- C. only for certain (scattered) inputs
- D. for all inputs Discuss
Correct Answer: for all inputs
- 8. Assume that in a certain 4-bit weighted ladder DAC, the input representing the most significant bit is applied to a 20 kΩ resistor. What is the size of the resistor that represents the least significant bit?
Options- A. 2.5 kΩ
- B. 5 kΩ
- C. 80 kΩ
- D. 160 kΩ Discuss
Correct Answer: 160 kΩ
- 9. A standard logic device can be connected on a bus system as an open-collector logic device by connecting each output to a ________.
Options- A. discrete transistor
- B. 10 kΩ series resistor
- C. light-emitting diode
- D. CMOS buffer Discuss
Correct Answer: discrete transistor
- 10. Of the methods listed, the fastest A/D conversion is done by a ________.
Options- A. single-slope ramp converter
- B. dual-slope ramp converter
- C. successive-approximation converter
- D. tracking converter Discuss
Correct Answer: successive-approximation converter
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