Electrical Machines Pole changing methods are suitable only for ___________ type induction motor. cage. linear. none of these. wound. cage. linear. none of these. wound. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a transformer, hysteresis and eddy current losses depend upon load current supply frequency both 2 and 3 maximum flux density load current supply frequency both 2 and 3 maximum flux density ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following machines have highest power factor with respect to magnetizing current? Open slot type machines. Any of the above. Closed slot type machines. Semi closed slot type machine. Open slot type machines. Any of the above. Closed slot type machines. Semi closed slot type machine. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The compensating winding in a DC machine is located on commutating poles for improving commutation. is located on pole shoes to avoid the sparking at the brushes. is located on pole shoes for avoiding the flashover at the commutator. is located in armature slots for compensation of the armature reaction. is located on commutating poles for improving commutation. is located on pole shoes to avoid the sparking at the brushes. is located on pole shoes for avoiding the flashover at the commutator. is located in armature slots for compensation of the armature reaction. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Copper brushes in DC machine are used where low voltage and high currents are involved. where high voltage and low current. in both of above cases. None of these where low voltage and high currents are involved. where high voltage and low current. in both of above cases. None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The air gap between stator and the rotor of the 3 - φ induction motor is kept depends on the material of stator and the rotor. as wide as possible. as small as possible. air gap does not matter. depends on the material of stator and the rotor. as wide as possible. as small as possible. air gap does not matter. ANSWER DOWNLOAD EXAMIANS APP
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