A shunt generator running at 1000 r.p.m. has generated e.m.f. as 200 V. If the speed increases to 1200 r.p.m., the generated e.m.f. will be nearly_______________?

A. copper is harder than mica
B. mica and copper are equally hard
C. mica is harder than copper
D. none of the above

A. flux density
B. reluctance
C. ampere-turns
D. resistance

A. Compensating winding in a D.C. machine helps in commutation
B. In a D. C. generator interpoles winding is connected in series with the armature winding
C. Back pitch and front pitch are both odd and approximately equal to the pole pitch
D. Equilizing bus bars are used with parallel running of D.C. shunt gen¬erators

A. any even number of conductors
B. any odd number of conductors
C. that even number which is exact multiple of poles + 2
D. that even number which is exact multiple of poles

A. length of conductor
B. cross-sectional area of the conductor
C. number of conductors
D. all of the above

A. 2 : 3
B. 3 : 1
C. 3 : 2
D. 1 : 3