Consider the following statements regarding phase controlled converters:i) They do not provide smooth variation of output voltage.ii) They inject harmonics into the power system.iii) They draw non-unity power factor current for finite firing angles.Which of the above statements are correct?

Consider the following statements regarding phase controlled converter

1.	Consider the following statements regarding phase controlled converters:i) They do not provide smooth variation of output voltage.ii) They inject harmonics into the power system.iii) They draw non-unity power factor current for finite firing angles.Which of the above statements are correct?
A.	All the three
B.	i and ii only
C.	i and iii only
D.	ii and iii only
Answer» B. i and ii only

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Consider the following statements regarding phase controlled converters:i) They do not provide smooth variation of output voltage.ii) They inject harmonics into the power system.iii) They draw non-unity power factor current for finite firing angles.Which of the above statements are correct?

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