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 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

3. 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

4. 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

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

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

6. 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

7. For the same peak value which of the following wave will ‘have the highest r.m.s. value?

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

8. 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

9. Form factor for a sine wave is________?

   A. 1.414
   B. 0.707
   C. 1.11
   D. 0.637

10. In a sine wave the slope is constant_______?

    A. between 0° and 90°
    B. between 90° and 180°
    C. between 180° and 270°
    D. no where