Electrical Machines In dc motors, under leading pole tips flux density will--------? decrease None of these increase either increase or decrease decrease None of these increase either increase or decrease ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In double cage induction motor, the outer cage offers high resistance and high reactance. low resistance and low reactance. low resistance and high reactance. high resistance and low reactance. high resistance and high reactance. low resistance and low reactance. low resistance and high reactance. high resistance and low reactance. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 3 - Φ IM in order to eliminate cogging the number of stator slots must be unequal to number of rotor slots and skewed in shape. equal to number of rotor slots. either (B) or (C). an integral multiple of number of rotor slots. unequal to number of rotor slots and skewed in shape. equal to number of rotor slots. either (B) or (C). an integral multiple of number of rotor slots. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The principle of operation of a 3 - Φ induction motor is almost similar to that of synchronous motor. repulsion start induction motor. transformer with secondary short circuited. capacitor start induction motor. synchronous motor. repulsion start induction motor. transformer with secondary short circuited. capacitor start induction motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A motor operates in stable region at which of the following slip? high slip region unity slip both 1 and 2 low slip region high slip region unity slip both 1 and 2 low slip region ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The residual magnetism of a self-excited dc generator is lost. To build up its emf again the field winding connection must be reversed field winding must be excited by low voltage dc supply the field winding must be replaced the armature connection must be reversed the field winding connection must be reversed field winding must be excited by low voltage dc supply the field winding must be replaced the armature connection must be reversed ANSWER DOWNLOAD EXAMIANS APP
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