Discussion
Home ‣ Electronics ‣ Arithmetic Operations and Circuits See What Others Are Saying!
- Question
The fast carry or look-ahead carry circuits found in most 4-bit parallel-adder circuits:
Options- A. increase ripple delay
- B. add a 1 to complemented inputs
- C. reduce propagation delay
- D. determine sign and magnitude
- Correct Answer
- reduce propagation delay
- 1. It is not possible to use a half-wave rectifier circuit without a transformer.
Options- A. True
- B. False Discuss
- 2. Asynchronous counters are often called ________ counters.
Options- A. toggle
- B. ripple
- C. binary
- D. flip-flop Discuss
- 3. How is ac current related to ac voltage in a purely capacitive circuit?
Options- A. AC current is 0.707 of the ac voltage.
- B. AC current lags ac voltage.
- C. AC current is 0.637 of the ac voltage.
- D. AC current leads ac voltage. Discuss
- 4. The power gain (Ap) of any transistor amplifier circuit equals the ___________.
Options- A. current gain squared
- B. current gain times the voltage gain
- C. voltage gain times the output resistance
- D. current gain plus the voltage gain Discuss
- 5. If R1 is in series with parallel connected to R2 and R3, what happens to total current if R2 opens?
Options- A. increases
- B. decreases
- C. remains the same
- D. cannot tell Discuss
- 6.
If the switch is moved to position 1 in the given circuit, how long will it take for the current to reach its maximum value?
Options- A. 72.5 µs
- B. 532 µs
- C. 610 µs
- D. 833 µs Discuss
- 7. A coprocessor is a microprocessor designed with a limited instruction set optimized to perform arithmetic operations very quickly.
Options- A. True
- B. False Discuss
- 8. Total emitter current is:
Options- A. IE ? IC
- B. IC + IE
- C. IB + IC
- D. IB ? IC Discuss
- 9. Which control should be moved to display more cycles of a signal on an oscilloscope?
Options- A. horizontal position to left or right
- B. volts/cm to a smaller number
- C. vertical position to top or bottom
- D. time/cm to a higher setting Discuss
- 10. Which equation determines individual resistor voltage drop?
Options- A. V x R
- B. I2 x R
- C. V x I
- D. I x R Discuss
More questions
Correct Answer: False
Correct Answer: ripple
Correct Answer: AC current leads ac voltage.
Correct Answer: current gain times the voltage gain
Correct Answer: decreases
Correct Answer: 532 µs
Correct Answer: False
Correct Answer: IB + IC
Correct Answer: time/cm to a higher setting
Correct Answer: I x R
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