A) 10 A B) 5 A C) 30 A D) 17.32 A. Ans : (A)
A) 4 poles B) 8 poles C) 2 poles D) any number of poles. Ans : (D)
A) 60 to 75 percent B) 80 to 90 percent C) 90 to 95 percent D) 95 to 99 percent. Ans : (B)
A) 5 timers B) 4 times C) 3 times D) 2 times. Ans : (C)
A) vacuum suction B) supplying compressed air C) rubbing with white cloth D) washing with water. Ans : (A)
A) dc series motor B) 3 phase induction motor C) commutator motor D) synchronous motor. Ans : (B)
A) it accelerates too fast B) it is started on full load C) it runs at 10 to 15 percent of rated speed D) it is subjected to fluctuating load. Ans : (C)
A) run at less than 1500 rpm B) run at less than 1000 rpm C) run at less than 600 rpm D) not run. Ans : (B)
A) Synchronous speed B) 0.95 x synchronous C) Synchronous speed x slip D) Synchronous speed x (1 - slip) Ans : (D)
A) unequal stator phase resistance B) open circuited rotor C) inter turn short circuit on rotor D) any of the above. Ans : (D)