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Total Questions : 199 | Page 1 of 20 pages
Question 1. A ramp is the type of waveform characterized by a non-linear increase or decrease in voltage or current.
  1.     True
  2.     False
  3.     Wave A leads wave B by 105°
  4.     Wave A lags wave B by 105°
 Discuss Question
Answer: Option B. ->  False
Question 2. When a sine wave has a frequency of 100 hz in 12 s it goes through
  1.     1/100 cycle
  2.     12 cycles
  3.     120 cycles
  4.     1,200 cycles
 Discuss Question
Answer: Option D. ->  1,200 cycles
Question 3. A sine wave of 15 khz is changing at a faster rate than a sine wave with a frequency of
  1.     25 kHz
  2.     12 kHz
  3.     18 kHz
  4.     1.3 MHz
 Discuss Question
Answer: Option B. ->  12 kHz
Question 4. 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
  1.     0°
  2.     45°
  3.     40°
  4.     None of the above
 Discuss Question
Answer: Option C. ->  40°
Question 5. Sine wave a has a positive-going zero crossing at 45°. sine wave b has a positive-going zero crossing at 60°. which of the following statements is true?
  1.     Wave A leads wave B by 15°
  2.     Wave A lags wave B by 15°
  3.     Wave A leads wave B by 105°
  4.     Wave A lags wave B by 105°
 Discuss Question
Answer: Option A. ->  Wave A leads wave B by 15°
Question 6. The average half-cycle value of a sine wave with a 40 v peak is
  1.     25.48 V
  2.     6.37 V
  3.     14.14 V
  4.     50.96 V
 Discuss Question
Answer: Option A. ->  25.48 V
Question 7. A waveform has a baseline of 3 v, a duty cycle of 20%, and an amplitude of 8 v. the average voltage value is
  1.     4 V
  2.     4.6 V
  3.     1.6 V
  4.     11 V
 Discuss Question
Answer: Option A. ->  4 V
Question 8. Two series resistors are connected to an ac source. if there are 7.5 v rms across one resistor and 4.2 v rms across the other, the peak source voltage is
  1.     16.54 V
  2.     1.65 V
  3.     10.60 V
  4.     5.93 V
 Discuss Question
Answer: Option A. ->  16.54 V
Question 9. A signal with a 400 µs period has a frequency of
  1.     250 Hz
  2.     2,500 Hz
  3.     25,000 Hz
  4.     400 Hz
 Discuss Question
Answer: Option B. ->  2,500 Hz
Question 10. A sine wave with a period of 4 ms is changing at a faster rate than a sine wave with a period of
  1.     0.0045 s
  2.     2 ms
  3.     1.5 ms
  4.     3,000 µs
 Discuss Question
Answer: Option A. ->  0.0045 s

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