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- Question
A device that converts mechanical pressure to electrical energy is called a:
Options- A. piezoelectric device
- B. solar cell
- C. photodiode
- D. nicad cell
- E. None of the above
- Correct Answer
- piezoelectric device
- 1. Two diodes are in series. The first diode has a voltage of 0.75 V and the second has a voltage of 0.8 V. If the current through the first diode is 500 mA, what is the current through the second diode
Options- A. 11 mA
- B. 12 mA
- C. 10 mA
- D. 14 mA
- E. None of the above Discuss
- 2. If the current gain is 200 and the collector current is 100 mA, the base current is
Options- A. 2 mA
- B. 0.5 mA
- C. 2 A
- D. 200 A
- E. None of the above Discuss
- 3. When the Q point moves along the load line, the voltage increases when the current
Options- A. Decreases
- B. Stays the same
- C. Increases
- D. Can be any of above
- E. None of the above Discuss
- 4. Which one of the following statements is true for voltage in a series circuit?
Options- A. The total voltage is equal to the sum of the individual voltages in a series circuit
- B. The total voltage in a series circuit is equal to the average value of the individual voltages
- C. The total voltage of a series circuit is equal to the total current divided by the total resistance
- D. The total voltage in a series circuit is always less than the value of the smallest voltage
- E. None of the above Discuss
- 5. The merging of a free electron and a hole is called
Options- A. Covalent bonding
- B. Lifetime
- C. Recombination
- D. Thermal energy
- E. None of the above Discuss
- 6. At room temperature a conductor has low many holes?
Options- A. Same number as free electrons
- B. many
- C. Only those produced by thermal energy
- D. less than the free electrons
- E. None of the above Discuss
- 7. What is the barrier potential of a silicon diode at room temperature?
Options- A. 0.7V
- B. 0.3V
- C. 1 V
- D. 2 m V per degree Celsius
- E. None of the above Discuss
- 8. The nucleus of the copper atom contains how many protons?
Options- A. 1
- B. 4
- C. 18
- D. 29
- E. None of the above Discuss
- 9. One henry of inductance is defined as:
Options- A. the amount of counter emf required to reduce a current to 1 A
- B. the amount of inductance required for generating 1 V of counter emf when the current changes at the rate of 1 A per second
- C. the amount of inductance required to change the frequency of a current by 1 Hz
- D. the number of turns of wire in an inductor multiplied by the amount of current flowing through it
- E. None of the above Discuss
- 10. A basic capacitor is composed of:
Options- A. two conductors separated by a dielectric
- B. two dielectrics separated by a conductor
- C. two coils separated by a dielectric
- D. two coils separated by a conductor
- E. None of the above Discuss
Electronic Principles problems
Search Results
Correct Answer: 10 mA
Correct Answer: 0.5 mA
Correct Answer: Increases
Correct Answer: The total voltage is equal to the sum of the individual voltages in a series circuit
Correct Answer: Recombination
Correct Answer: Same number as free electrons
Correct Answer: 0.7V
Correct Answer: 29
Correct Answer: the amount of inductance required for generating 1 V of counter emf when the current changes at the rate of 1 A per second
Correct Answer: two conductors separated by a dielectric
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