Electrical Machines The air gap between stator and the rotor of the 3 - φ induction motor is kept 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. depends on the material of stator and the rotor. air gap does not matter. as small as possible. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Minimum allowable resistivity of power transformer insulating oil is generally taken as 1 X 1012 Ω - cm at 27°C and 0.1 X 1012 4 X 1012 Ω - cm at 27°C and 0.4 X 1012 2 X 1012 Ω - cm at 27°C and 0.2 X 1012 3 X 1012 Ω - cm at 27°C and 0.3 X 1012 1 X 1012 Ω - cm at 27°C and 0.1 X 1012 4 X 1012 Ω - cm at 27°C and 0.4 X 1012 2 X 1012 Ω - cm at 27°C and 0.2 X 1012 3 X 1012 Ω - cm at 27°C and 0.3 X 1012 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which is the arrangement of windings in a core type single phase transformer? Half lv inside and half hv outside on each core limb Sandwiched lv and hv discs on each core limb Lv on one core limb and hv on the other Half hv inside and half lv outside on each core limb Half lv inside and half hv outside on each core limb Sandwiched lv and hv discs on each core limb Lv on one core limb and hv on the other Half hv inside and half lv outside on each core limb ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When the rotor speed, in a synchronous machine, becomes more than the synchronous speed during hunting, the damper bars develop synchronous motor torque. induction generator torque. DC motor torque. induction motor torque. synchronous motor torque. induction generator torque. DC motor torque. induction motor torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two windings provided on the stator of 1-phase induction motor, one main winding and the other auxiliary winding are connected in series in parallel either of these depending on the design of the motor through inductive coupling in series in parallel either of these depending on the design of the motor through inductive coupling ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In shunt dc motor the direction of rotation of the motor will reversed. When none of above. only field terminals are changed. either field terminals are reversed or armature terminals are reversed. only armature terminals are reversed. none of above. only field terminals are changed. either field terminals are reversed or armature terminals are reversed. only armature terminals are reversed. ANSWER DOWNLOAD EXAMIANS APP
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