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- Question
An unloaded zener regulator has a source voltage of 20 V, a series resistance of 330 W, and a zener voltage of 12 V, What is the Zener current?
Options- A. 28.4 mA
- B. 24.2 mA
- C. 34.4 mA
- D. 68.4 mA
- E. None of the above
- Correct Answer
- 24.2 mA
- 1. A circuit has two different voltage sources that are connected in a series-aiding form. If the sources are rated at 6 V and 9 V, what is the total source voltage?
Options- A. 15 V
- B. 16 V
- C. 7.5 V
- D. 8 V
- E. None of the above Discuss
- 2. When operating above its resonant frequency, a parallel RLC circuit has the characteristics of a:
Options- A. parallel RL circuit
- B. parallel RC circuit
- C. parallel RLC circuit operated above its resonant frequency
- D. purely resistive circuit
- E. None of the above Discuss
- 3. An intrinsic semiconductor has some holes in it at room temperature. What causes these holes?
Options- A. Doping
- B. Valence electrons
- C. Free electrons
- D. Thermal energy
- E. None of the above Discuss
- 4. The transistor has a current gain of 175. If the base current is 0.1 mA, what is the collector current?
Options- A. 1750 mA
- B. 17.5 mA
- C. 175 mA
- D. 1.75 mA
- E. None of the above Discuss
- 5. Current can flow through a normally open push button switch as long as:
Options- A. you are pressing the button
- B. you are not pressing the button
- C. its contact remain open
- D. its contact remain open
- E. None of the above Discuss
- 6. Doubling the operating frequency of a purely capacitive circuit:
Options- A. has no effect on the total circuit current
- B. doubles the amount of total current
- C. cuts the total current by one-half
- D. thrice the amount of total current
- E. None of the above Discuss
- 7. What is the impedance of a circuit composed of a 100 ohm resistor connected in parallel with a capacitor that has a reactance of 100 ohm?
Options- A. 60 Ohm
- B. 99.3 Ohm
- C. 250 Ohm
- D. 70.7Ohm
- E. None of the above Discuss
- 8. A circuit has a Norton current of 10 mA and a Norton resistance of 10 kW. What is the Thevenin circuit?
Options- A. 1000 V and a series resistance of 10 k Ohm
- B. 100 V and a parallel resistance of 10 k Ohm
- C. 100 V and a series resistance of 10 k Ohm
- D. 1000 V and a parallel resistance of 10 kOhm
- E. None of the above Discuss
- 9. Doubling the diameter of the coil in an inductor:
Options- A. multiplies the value of inductance by two
- B. reduces the value of inductance by one-half
- C. reduces the value of inductance by one-fourth
- D. multiplies the value of inductance by four
- E. None of the above Discuss
- 10. Which one of the following statements is true?
Options- A. The secondary voltage for a step-down power transformer is greater than the primary voltage
- B. The secondary current for a step-down power transformer is greater than the primary voltage
- C. Parallel RLC circuit operated below its resonant frequency
- D. purely resistive circuit
- E. None of the above Discuss
Electronic Principles problems
Search Results
Correct Answer: 15 V
Correct Answer: parallel RC circuit
Correct Answer: Thermal energy
Correct Answer: 17.5 mA
Correct Answer: you are not pressing the button
Correct Answer: doubles the amount of total current
Correct Answer: 70.7Ohm
Correct Answer: 100 V and a series resistance of 10 k Ohm
Correct Answer: multiplies the value of inductance by two
Correct Answer: The secondary current for a step-down power transformer is greater than the primary voltage
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