Electrical Machines
The leakage reactance of a 3-phase alternator is determined by performing

 short circuit and slip tests.
 open circuit and short circuit tests.
 zero power factor and slip tests.
 open circuit and zero power factor tests.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
An inverted V curve of synchronous motor shows variation of

 power factor and supply voltage during hunting.
 supply voltage and field current at constant excitation.
  power factor and DC excitation at constant load.
 supply voltage and excitation current at constant load.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Due to magnetic saturation, the flux per pole in a DC machine without brush shift

  decreases in both generators and the motors with load.
 increases in both the generators and the motors with load.
 decreases in generators and increases in motor with load.
 increases in generators but decreases in motor with load.

ANSWER DOWNLOAD EXAMIANS APP