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- Question
The equation for the output frequency of a 555 timer operating in the astable mode is:
.
What value of C1 will be required if R1 = 1 kΩ, R2 = 1 kΩ, and f = 1 kHz?
Options- A. 0.33 µF
- B. 0.48 µF
- C. 480 µF
- D. 33 nF
- Correct Answer
- 0.48 µF
- 1. Generally, increasing the resistance in a circuit will decrease the current.
Options- A. True
- B. False Discuss
- 2. A capacitor takes ___ time constants to charge to 95% of its capacity.
Options- A. 2
- B. 3
- C. 4
- D. 5 Discuss
- 3. The term "integrator" is derived from a mathematical function in trigonometry.
Options- A. True
- B. False Discuss
- 4. Variable resistors have problems with the wiper making contact.
Options- A. True
- B. False Discuss
- 5. A protoboard is used to make experimental circuits.
Options- A. True
- B. False Discuss
- 6. A rheostat is not a type of variable resistor.
Options- A. True
- B. False Discuss
- 7. Transconductance is also called mutual conductance.
Options- A. True
- B. False Discuss
- 8. A bipolar transistor has three leads: the base, collector, and emitter.
Options- A. True
- B. False Discuss
- 9. Which type of JFET bias requires a negative supply voltage?
Options- A. feedback
- B. source
- C. gate
- D. voltage divider Discuss
- 10. A ______ is not a multivibrator.
Options- A. one-shot
- B. flip-flop
- C. VCO
- D. bistable Discuss
More questions
Correct Answer: True
Correct Answer: 3
Correct Answer: False
Correct Answer: True
Correct Answer: True
Correct Answer: False
Correct Answer: True
Correct Answer: True
Correct Answer: gate
Correct Answer: one-shot
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