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- Question
In an intrinsic semiconductor, the number of free electrons
Options- A. Equals the number of holes
- B. Is less than the number of holes
- C. Is greater than the number of holes
- D. Impossible to say
- E. None of the above
- Correct Answer
- Equals the number of holes
- 1. In a pure inductor:
Options- A. ac current leads the voltage by 90 degree
- B. ac current and voltage are exactly in phase
- C. ac current lags the voltage by 90 degree
- D. ac current is converted to dc voltage
- E. None of the above Discuss
- 2. The knee voltage of a diode is approximately equal to the
Options- A. Applied voltage
- B. Barrier potential
- C. Breakdown voltage
- D. Forward voltage
- E. None of the above Discuss
- 3. Waveforms are graphs that show:
Options- A. frequency on the vertical axis and amplitude on the horizontal axis
- B. amplitude on the vertical axis and frequency on the horizontal axis
- C. amplitude on the vertical axis and the passage of time on the horizontal axis
- D. the passage of time on the vertical axis and amplitude on the horizontal axis
- E. None of the above Discuss
- 4. Which one of the following statements is true for current flowing in a series circuit?
Options- A. The amount of current flow through each part of a series circuit can be different, depending on the resistance of each part and the amount of voltage applied to it
- B. The total current in a series circuit is equal to the sum of the currents flowing through the individual components in the circuit
- C. The same current flows through every part of a series circuit
- D. The total current in a series circuit is equal to the total voltage multiplied by the total resistance
- E. None of the above Discuss
- 5. When a transistor is cut off or saturated, transistor _____ have almost no effect
Options- A. wave
- B. variations
- C. stage
- D. circuits
- E. None of the above Discuss
- 6. Which one of the following statements is true for the currents in a parallel RC circuit?
Options- A. The total current is equal to the sum of the currents for the resistance and capacitance
- B. The current always has the same amplitude and phase for every part of the circuit
- C. The total current is less than the sum of the currents for the resistance and capacitance
- D. The total current. is greater than the sum of the currents for the resistance and capacitance
- E. None of the above Discuss
- 7. When the graph of current versus voltage is a straight line, the device is referred to as
Options- A. Active
- B. Linear
- C. Nonlinear
- D. Bipolar
- E. None of the above Discuss
- 8. How many types of flow are there in a semiconductor?
Options- A. 0
- B. 1
- C. 2
- D. 3
- E. None of the above Discuss
- 9. Which one of the following is a direct statement of Ohm's law?
Options- A. The voltage drop across a resistance is proportional to the value of resistance and the amount of current flowing through it
- B. The total resistance of a parallel circuit is less than the value of the smallest resistance
- C. The algebraic sum of voltages in a loop is equal to zero
- D. The algebraic sum of currents entering and leaving a point is equal to zero
- E. None of the above Discuss
- 10. The number of free electrons and holes in intrinsic semiconductor increases when the temperature
Options- A. Decreases
- B. Increases
- C. Stays the same
- D. 0oC
- E. None of the above Discuss
Electronic Principles problems
Search Results
Correct Answer: ac current lags the voltage by 90 degree
Correct Answer: Barrier potential
Correct Answer: amplitude on the vertical axis and the passage of time on the horizontal axis
Correct Answer: The same current flows through every part of a series circuit
Correct Answer: variations
Correct Answer: The total current is equal to the sum of the currents for the resistance and capacitance
Correct Answer: Linear
Correct Answer: 1
Correct Answer: The voltage drop across a resistance is proportional to the value of resistance and the amount of current flowing through it
Correct Answer: Increases
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