Discussion
Home ‣ Electrical Engineering ‣ Alternating Current and Voltage Comments
- Question
If a sine wave goes through 10 cycles in 20 µs, the period is
Options- A. 20 µs
- B. 4 µs
- C. 2 µs
- D. 100 µs
- Correct Answer
- 2 µs
- 1. To produce an 800 Hz sine wave, a four-pole generator must be operated at
Options- A. 200 rps
- B. 400 rps
- C. 800 rps
- D. 1,600 rps Discuss
- 2. The average half-cycle value of a sine wave with a 40 V peak is
Options- A. 25.48 V
- B. 6.37 V
- C. 14.14 V
- D. 50.96 V Discuss
- 3. A sinusoidal current has an rms value of 14 mA. The peak-to-peak value is
Options- A. 45.12 mA
- B. 16 mA
- C. 39.6 mA
- D. 22.6 mA Discuss
- 4. A pulse waveform has a high time of 8 ms and a pulse width of 32 ms. The duty cycle is
Options- A. 25%
- B. 50%
- C. 1%
- D. 100% Discuss
- 5. A phasor represents
Options- A. the magnitude and a quantity direction
- B. the width of a quantity
- C. the phase angle
- D. the magnitude of a quantity Discuss
- 6. A sine wave with an rms value of 12 V is riding on a dc level of 18 V. The maximum value of the resulting waveform is
Options- A. 6 V
- B. 30 V
- C. 35 V
- D. 0 V Discuss
- 7. One sine wave has a positive-going zero crossing at 15° and another sine wave has a positive-going zero crossing at 55°. The phase angle between the two waveforms is
Options- A. 0°
- B. 45°
- C. 40°
- D. none of the above Discuss
- 8. A square wave has a period of 60 µs. The first odd harmonic is
Options- A. 5 kHz
- B. 50 kHz
- C. 500 kHz
- D. 33.33 kHz Discuss
- 9. The conductive loop on the rotor of a simple two-pole, single-phase generator rotates at a rate of 400 rps. The frequency of the induced output voltage is
Options- A. 40 Hz
- B. 100 Hz
- C. 400 Hz
- D. indeterminable Discuss
- 10. A sine wave of 15 kHz is changing at a faster rate than a sine wave with a frequency of
Options- A. 25 kHz
- B. 12 kHz
- C. 18 kHz
- D. 1.3 MHz Discuss
Alternating Current and Voltage problems
Search Results
Correct Answer: 400 rps
Correct Answer: 25.48 V
Correct Answer: 39.6 mA
Correct Answer: 25%
Correct Answer: the magnitude and a quantity direction
Correct Answer: 35 V
Correct Answer: 40°
Correct Answer: 50 kHz
Correct Answer: 400 Hz
Correct Answer: 12 kHz
Comments
There are no comments.More in Electrical Engineering:
Programming
Copyright ©CuriousTab. All rights reserved.