A) separate armature B) rotor shaft C) pole faces D) stator frame. Ans : (C)
A) pulsations in power supply B) reciprocating type of load C) pulsating torque of driven equipment D) any of the above. Ans : (D)
A) stop B) burn with dense smoke C) run as induction motor D) function as static condenser. Ans : (A)
A) run normally B) burn out C) get overheated D) not start. Ans : (C)
A) armature current and supply voltage B) dc field current and ac armature current C) excitation current and back emf D) none of the above. Ans : (B)
A) lagging B) leading C) unity D) none of the above. Ans : (A)
A) Below 45 degrees electrical B) 45 degrees electrical C) 90 degrees electrical D) Above 90 degrees electrical. Ans : (C)
A) magnetization of rotor poles by stator magnetic field B) rotating magnetic field of the rotor C) rotating magnetic field of the stator D) interlocking action between stator and rotor fields. Ans : (A)
A) 100% B) 50% C) 1% D) 0%. Ans : (D)
A) power factor angle B) angle of retardation C) torque angle D) synchronizing angle. Ans : (C)