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 small as possible. as wide as possible. air gap does not matter. depends on the material of stator and the rotor. as small as possible. as wide as possible. air gap does not matter. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two dc machines A and B, using the same conductor material, have armature circuit resistances of 0.4 Ω and 1.2 Ω respectively. Of the two machines, A is bigger than B for the same current rating B is bigger than A for the same current rating both are of the same size for the same current rating A is bigger than B for the same voltage rating A is bigger than B for the same current rating B is bigger than A for the same current rating both are of the same size for the same current rating A is bigger than B for the same voltage rating ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A separately-excited dc motor has an armature resistance of 0.5 Ω. It runs off a 250 V dc supply Drawing an armature current of 20 A at 1500 rpm. The torque developed for an armature current Of 10 A, for the same field current, will be 15.92 Nm 15.6 Nm 16.55 Nm 15.28 Nm 15.92 Nm 15.6 Nm 16.55 Nm 15.28 Nm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The size of inter poles is small as compared to main poles. What is the reason? In order to get saturated. All of these In order to not to get saturated. In order to get more flux. In order to get saturated. All of these In order to not to get saturated. In order to get more flux. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines From no load to full load the slip will not change. slightly decrease. None of these slightly increase. not change. slightly decrease. None of these slightly increase. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines It is an advisable to use auto transformer if the transformation ratio is Greater than 1. 0.25. near to 1. 0.5. Greater than 1. 0.25. near to 1. 0.5. ANSWER DOWNLOAD EXAMIANS APP
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