The no-load speed of a single-phase SCR bridge converter fed separately excited dc motor operating at a firing delay angle, α and flux, Φ

(A) directly proportional to α and Φ

(B) inversely proportional to α and Φ

(C) directly proportional to α and inversely proportional to Φ

(D) directly proportional to Φ and inversely proportional to α

(A) directly proportional to α and Φ

(B) inversely proportional to α and Φ

(C) directly proportional to α and inversely proportional to Φ

(D) directly proportional to Φ and inversely proportional to α