Two waves of the same frequency have opposite phase when the phase angle between them is_________?

Related Mcqs:

1. What will be the phase angle between two alternating waves of equal frequency, when one wave attains maximum value the other is at zero value________ ?

   A. 0° B. 45° C. 90° D. 180°...

2. If two sine waves of the same frequency have a phase difference of JT radians, then_______?

   A. both will reach their minimum values at the same instant B. both will reach their maximum values at the same instant C. when one wave reaches its maxi¬mum value, the other will reach its minimum value D. none of the above...

3. The product of apparent power and cosine of the phase angle between circuit voltage and current is

   A. true power B. reactive power C. volt-amperes D. instantaneous power...

4. A sine wave has a frequency of 50 Hz. Its angular frequency is ________ radian/second.

   A. 100 n B. 50 jt C. 25 JT D. 5 n...

5. The reactance offered by a capacitor to alternating current of frequency 50 Hz is 20 Q. If frequency is increased to 100 Hz, reactance becomes_______ohms?

   A. 2.5 B. 5 C. 10 D. 15...

6. The frequency of domestic power supply in Pakistan is_________?

   A. 200 Hz B. 100 Hz C. 60 Hz D. 50 Hz...

7. If two sinusoids of the same frequency but of different amplitudes and phase angles are subtracted, the resultant is____________?

   A. a sinusoid of the same frequency B. a sinusoid of half the original frequency C. a sinusoid of double the frequency D. not a sinusoid...

8. Which of the following waves has the highest value of peak factor ___________?

   A. Square wave B. Sine wave C. Half wave rectified sine wave D. Triangular wave...

9. The power consumed in a circuit element will be least when the phase difference between the current and voltage is__________?

   A. 180″ B. 90° C. 60° D. 0°...

10. The power consumed in a circuit element will be least when the phase difference between the current and voltage is________?

    A. 180″ B. 90° C. 60° D. 0°...