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- Question
If a load resistance is 1 kW, a stiff voltage source has a resistance of
Options- A. At least 10 Ohm
- B. less than 10 Ohm
- C. More than 100 k Ohm
- D. Less than 100 k Ohm
- E. None of the above
- Correct Answer
- less than 10 Ohm
- 1. A circuit has two different voltage sources that are connected in a series-opposing form. If the sources are rated at 6 V and 9 V, what is the total source voltage?
Options- A. 3 V
- B. 16 V
- C. 7.5 V
- D. 8 V
- E. None of the above Discuss
- 2. Doubling the operating frequency of an inductive circuit:
Options- A. has no effect on the inductive reactance
- B. doubles the amount of inductive reactance
- C. multiplies the inductive reactance by 6.28
- D. cuts the inductive reactance in half
- E. None of the above Discuss
- 3. Which one of the following statements is true for the voltages in a series RL circuit?
Options- A. The total voltages is equal to the sum of the voltages across the resistance and inductance
- B. The voltage always has the same amplitude and phase for every part of the circuit
- C. The total voltage is less than the sum of the voltages across the resistance and inductance
- D. The total voltage lags the total current by less than 90
- E. None of the above Discuss
- 4. If a transistor operates at the middle of the load line, an increase in the current gain will move the Q point
Options- A. down
- B. up
- C. nowhere
- D. off the load line
- E. None of the above Discuss
- 5. Suppose the peak value of a sinusoidal voltage is 50 V. What is the rms value?
Options- A. 37.4 V
- B. 35.4 V
- C. 38.74 V
- D. 30.4 V
- E. None of the above Discuss
- 6. Positive ions are atoms that have
Options- A. Gained a proton
- B. Lost a proton
- C. Gained an electron
- D. Lost an electron
- E. None of the above Discuss
- 7. What is the inductive reactance of a 0.1-H coil that is operating at 1000 Hz?
Options- A. 100 Ohm
- B. Less than 1 Ohm
- C. 628 Ohm
- D. 444 Ohm
- E. None of the above Discuss
- 8. A typical light switch in your home is a:
Options- A. knife switch
- B. toggle switch
- C. rotary switch
- D. momentary push button switch
- E. None of the above Discuss
- 9. A device that converts thermal energy to electrical energy is called a:
Options- A. thermocouple
- B. solar cell
- C. chemical cell
- D. piezoelectric devices
- E. None of the above Discuss
- 10. A power transformer steps 100 V down to 10 V. If the current in its primary winding is 2 A, what is the current in the secondary winding?
Options- A. 50 A
- B. 12 A
- C. 5 A
- D. 20 A
- E. None of the above Discuss
Electronic Principles problems
Search Results
Correct Answer: 3 V
Correct Answer: doubles the amount of inductive reactance
Correct Answer: The total voltage is less than the sum of the voltages across the resistance and inductance
Correct Answer: up
Correct Answer: 35.4 V
Correct Answer: Lost an electron
Correct Answer: 628 Ohm
Correct Answer: toggle switch
Correct Answer: thermocouple
Correct Answer: 20 A
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