Electrical Machines A generator may loose residual magnetism due to over excitation. any of these. vibrations. heating. over excitation. any of these. vibrations. heating. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an auto transformer, for what value of turn ratio, power transferred by inductively and conductively are same? any of the above 0 1 0.5 any of the above 0 1 0.5 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Fifth harmonic component of the induced voltage in three phase AC generator can be eliminated by using a winding pitch of 2 / 3. 4 / 5. 6 / 7. 5 / 6. 2 / 3. 4 / 5. 6 / 7. 5 / 6. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the field circuit of a DC shunt motor is opened The speed of motor will be reduced. The armature current will reduce. The motor will attain dangerously high speed. DC Shunt Motor The speed of motor will be reduced. The armature current will reduce. The motor will attain dangerously high speed. DC Shunt Motor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The direction of rotation of a 3 - Φ induction motor can be reversed by transposing all the three leads from the supply. transposing any two leads from supply. disconnecting any one phase. transposing any two leads from slip rings. transposing all the three leads from the supply. transposing any two leads from supply. disconnecting any one phase. transposing any two leads from slip rings. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The speed of rotating magnetic field of 8 pole 50 Hz induction motor is 1500 rpm 1000 rpm 750 rpm 3000 rpm 1500 rpm 1000 rpm 750 rpm 3000 rpm ANSWER DOWNLOAD EXAMIANS APP
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