# 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

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