Practice Test: Question Set - 02
1. To produce an 800 Hz sine wave, a four-pole generator must be operated at
- (A) 200 rps
- (B) 400 rps
- (C) 800 rps
- (D) 1,600 rps
2. A pulse waveform has a high time of 8 ms and a pulse width of 32 ms. The duty cycle is
- (A) 25%
- (B) 50%
- (C) 1%
- (D) 100%
3. The angular position of a phasor represents the angle of the sine wave with respect to a reference.
- (A) True
- (B) False
4. If the rms voltage drop across a 15 kΩ resistor is 16 V, the peak current through the resistor is
- (A) 15 mA
- (B) 1.5 mA
- (C) 10 mA
- (D) 1 mA
5. The instantaneous value is the voltage or current value of a waveform at its peak.
- (A) True
- (B) False
6. 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
- (A) 0°
- (B) 45°
- (C) 40°
- (D) None of the
above
7. The duty cycle of a pulse waveform with a pulse width of 10 µs and a period of 100 µs is 25%.
- (A) True
- (B) False
8. If the peak of a sine wave is 13 V, the peak-to-peak value is
- (A) 6.5 V
- (B) 13 V
- (C) 26 V
- (D) None of the
above
9. Periodic is characterized by a repetition at fixed time intervals.
- (A) True
- (B) False
10. When a sine wave has a frequency of 100 Hz in 12 s it goes through
- (A) 1/100 cycle
- (B) 12 cycles
- (C) 120 cycles
- (D) 1,200 cycles
Next Tests: