The r.m.s. value and mean value is the same in the case of___________?

Related Mcqs:

1. 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

2. In the case of an unsymmetrical alternating current the average value must always be taken over__________?

   A. unsymmetrical part of the wave form
   B. the quarter cycle
   C. the half cycle
   D. the whole cycle

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 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

5. 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

6. 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

7. The r.m.s. value of a sinusoidal A.C. current is equal to its value at an angle of_______degrees?

   A. 90
   B. 60
   C. 45
   D. 30

8. The square waveform of current has following relation between r.m.s. value and average value?

   A. r.m.s. value is equal to average value
   B. r.m.s. value of current is greater than average value
   C. r.m.s. value of current is less than average value
   D. none of the above

9. 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

10. The power is measured in terms of decibles in case of_________?

    A. electronic equipment
    B. transformers
    C. current transformers
    D. auto transformers