11. The negative maximum of a cosine waveform occur at

a. 270 degree**b. 180 degree**

c. 90 degree

d. 0 degree

12. The positive maximum of a sine occur at

a. 0 degree

b. 45 degree**c. 90 degree**

d. 180 degree

13. For the same peak value of voltage , which waveform will have the least rms value?

a. Sine wave

b. Square wave**c. Triangular wave**

d. Full wave rectified sine wave

14. For the same peak value of voltage , which wave will have highest rms value

a. Sine wave

b. Half wave rectified sine wave**c. square wave**

d. Triangular wave

15. Which wave has the highest value of form factor?

a. Sine wave

b. Triangular wave

c. Square wave**d. Half wave rectified sine wave**

16. Which wave has the least value of form factor?**a. Square wave**

b. Rectangular wave

c. Triangular wave

d. Sine wave

17. Which of the following waves has form factor of 1.0

a. Sine wave

b. Triangular wave**c. Square wave**

d. none of the above

18. Which of the following frequencies has the longest period?**a. 1 Hz**

b. 10 Hz

c. 1 kHz

d. 10 kHz

19. RMS value and the mean value is the same in case of

a. Sine wave

b. Half wave rectified sine wave**c. Square wave**

d. Triangular wave

20. For a wave form more peaky then a sine wave , the form factor will be**a. more then 1.11**

b. 1.11

c. 1.10

d. less then 1.11