Electrical Machines
Two single-phase alternators operating in parallel have induced EMFs on open circuit of 230∠0° and 230∠10° volts and respective reactance of j2 Ω j3 Ω calculate the terminal voltage

 200 V.
 150 V.
 300 V.
  223.V.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
The residual magnetism of a self-excited dc generator is lost. To build up its emf again

 the armature connection must be reversed
 the field winding connection must be reversed
 the field winding must be replaced
 field winding must be excited by low voltage dc supply

ANSWER DOWNLOAD EXAMIANS APP