Related Mcqs:

1. The r.m.s. value of half wave rectified sine wave is 200 V. The r.m.s. value of full wave rectified AC. will be___________?

   A. 282.8 V
   B. 141.4 V
   C. 111 V
   D. 100 V

2. For the same peak value, which of the following wave has the least mean value ?

   A. half wave rectified sine wave
   B. triangular wave
   C. sine wave
   D. square wave

3. The peak value of a sine wave is 200 V. Its average value is___________?

   A. 127.4 V
   B. 141.4 V
   C. 282.8 V
   D. 200V

   Updated by: Ihtisham Ul Haq

4. For a sine wave with peak value Imax the r.m.s. value is_______?

   A. 0.5 Imax
   B. 0.707
   C. 0.9
   D. 1.414 Lmax

5. For a sine wave with peak value Emax _______ 8.30. the average value is?

   A. 0.636 Emax
   B. 0.707 Emax
   C. 0.434 EWc
   D. lAUEmax

6. 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

7. The equation of 50 Hz current sine wave having r.m.s. value of 60 A is____________?

   A. 60 sin 25 t
   B. 60 sin 50 t
   C. 84.84 sin 3141
   D. 42.42 sin 314 t

8. 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°

9. If a sinusoidal wave has frequency of 50 Hz with 30 A r.m.s. current which of the following equation represents this wave_________ ?

   A. 42.42 sin 3141
   B. 60 sin 25 t
   C. 30 sin 50 t
   D. 84.84 sin 25 t

10. The period of a sine wave is _____ seconds. Its frequency is

    A. 20 Hz
    B. 30 Hz
    C. 40 Hz
    D. 50 Hz