Electrical Machines A synchronous generator is feeding a zero power factor (lagging) load at rated current. The armature reaction is demagnetizing. magnetizing. cross – magnetizing. ineffective. demagnetizing. magnetizing. cross – magnetizing. ineffective. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A synchronous motor is supplying a load at unity power factor. If the load on the motor is increased keeping its excitation and terminal voltage constant, the power factor will become lagging will remain the same None of these will become leading will become lagging will remain the same None of these will become leading ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the effect of armature reaction ? Armature flux weakens the main field flux. Armature flux distorts the main field flux. None of the options. Both option B and C. Armature flux weakens the main field flux. Armature flux distorts the main field flux. None of the options. Both option B and C. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The shaft of induction motor should be hollow. any of these. flexible. stiff. hollow. any of these. flexible. stiff. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What type of connection is made in between the inter-pole and the field winding? Series. Parallel. Compound. None of the options. Series. Parallel. Compound. None of the options. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Find the number of poles required, when the frequency is 50Hz and speed of the motor is 500 rpm? 5 12 10 24 5 12 10 24 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS