A) 78 V B) 156 V C) 312 V D) 624 V. Ans : (C)
A) 152 V B) 304 V C) 456 V D) 608 V. Ans : (B)
A) 2 poles B) 4 poles C) 6 poles D) 36 poles. Ans : (A)
A) 210 V B) 237 V C) 240 V D) 270 V. Ans : (A)
A) 150 V B) 205 V C) 225 V D) 250 V. Ans : (D)
A) provide mechanical balance B) reduce load on bearings C) avoid noise developed in the machine D) avoid unequal distribution of current at the brushes there by helping to get sparkles commutation. Ans : (D)
A) brushes B) field C) load D) armature. Ans : (B)
A) alternate poles are north and south B) two north poles follow two south poles C) in all there are 4 north poles D) in all there are 4 north and 4 south poles. Ans : (A)
A) 60 to 65 percent B) 70 to 75 percent C) 80 to 85 percent D) 90 to 95 percent. Ans : (D)
A) 6 A B) 2 A C) 6.5 A D) 13 A. Ans : (C)