1. A 50kVA, 550V single phase alternator draws a field current 10A at rated load. With the same field current, the open

[answerhappygod]

1. A 50kVA, 550V single phase alternator draws a field
current 10A at rated load. With the same field current, the open
circuit emf and shirt circuit current are 300V and 150A. The ohmic
resistance of the armature between terminals is 0.18Ω. The ratio of
effective to ohmic resistance may be taken as 1.5. Determine the
terminal voltage at 0.8 pf factor lagging. Use two decimal
places.
2. A 1200kVA, 6600V, 3phase, Y-connected alternator has an
effective resistance of 0.4Ω and a reactance 0f 6Ω per phase. It
delivers full load current at 0.8 lagging power factor at rated
voltage. What will be the terminal voltage for the same excitation
and load current, if the power factor is 0.8 leading? Use
two decimal places.