Electrical Machines It is an advisable to use auto transformer if the transformation ratio is near to 1. Greater than 1. 0.5. 0.25. near to 1. Greater than 1. 0.5. 0.25. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature reaction mmf in a DC machines has a form of triangular. sinusoidal. rectangular. trapezoidal. triangular. sinusoidal. rectangular. trapezoidal. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A separately-excited DC generator, running at rated speed, has 6 volts across its armature terminals with no field current. When field winding is excited with one ampere, the voltage builds up to 250 V at no load. In case field current is reduced to zero, with the speed remaining unaltered, the armature terminal voltage would be less than 6 V more than 6 V zero 6 V less than 6 V more than 6 V zero 6 V 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. air gap does not matter. as small as possible. as wide as possible. depends on the material of stator and the rotor. air gap does not matter. as small as possible. as wide as possible. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 12 pole triplex lap wound DC armature, each conductor can carry current of 100 A. The rated current of this armature is 2400 A. 1200 A. 3600 A. 600 A. 2400 A. 1200 A. 3600 A. 600 A. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In alternator, the rotary part is armature. none of these. magnetic field poles. core. armature. none of these. magnetic field poles. core. ANSWER DOWNLOAD EXAMIANS APP
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