a) The motor will run faster b) The motor will start hunting the efficiency of the motor will increase c) The motor will start hunting d) The motor will burn out Ans: (d)
a) Starting torque b) Full load speed c) Full load current d) None of these Ans: (b)
a) Armature winding b) Field winding c) Commutator winding d) Slip rings Ans: (b)
a) R1 is minimum and R2 is maximum b) R1 maximum and R2 is minimum c) Both R1 is minimum and R2 is maximum d) Both R1 is minimum and R2 is minimum Ans: (a)
a) Both operate at same voltage b) Both have same back emf c) Both have same speed d) Both have same excitation Ans: (c)
a) Both have the same excitation b) Both have the same speed c) Both have the same back emf d) Both operate at the same voltage Ans: (a)
a) 2 V b) 10 V c) 20 V d) 40 V Ans: (a)
a) Field flux alone b) Armature current along c) Speed alone d) Both field flux and armature current Ans: (d)
a)Copper losses b) Mechanical losses c) Back emf d) Rotational losses Ans: (d)
a) Field flux alone b) Armature current alone c) Back emf d) Both armature current and field flux Ans: (a)