A) 0.7 B) 0.5 C) 3.0 D) 1.0. Ans : (B)
A) increases by about 5% B) reduce by about 5% C) remain unaltered D) depend on other factors. Ans : (A)
A) 51 N-m B) 71 N-m C) 1000 N-m D) 196 N-m. Ans : (D)
A) Full load speed B) Full load current C) Starting torque D) All of the above. Ans : (A)
A) Flux control B) Voltage control C) Ward-Leonard control D) Armature control. Ans : (C)
A) Eb = 2 V - IaRa B) Eb = 2 V + IaRa C) Eb = V - IaRa D) Eb = V + IaRa Ans : (C)
A) cross section area of the conductor B) length of the conductor C) nature of material of the conductor D) none of these. Ans : (B)
A) V/Ra B) Eb/Ra C) V/2Ra D) 2 V/Ra. Ans : (A)
A) run at very low speed B) run at very high speed C) burn D) start hunting. Ans : (C)
A) 2 : 1 B) 5 : 1 C) 25 : 1 D) 250 : 1. Ans : (C)