Question

In: Electrical Engineering

a) Give TWO (2) types of rotor in synchronous machine and describe the differences of these...

a) Give TWO (2) types of rotor in synchronous machine and describe the differences of these two rotors.

b) A three-phase 11kV, 12 MVA, 50 Hz, 4 poles, Y-connected, 0.9 power factor lagging synchronous generator has a synchronous reactance and armature resistance of 0.05 Ω and 0.4 Ω per phase respectively. Under full load condition, the friction and windage losses are 60 kW and the core losess are 39 kW. Determine:

i) The generator speed at no-load condition in rpm

ii) The magnitude of the phase and line current

iii) The internal emf generated and power angle

iv) The voltage regulation

v) The maximum power and converted torque

Solutions

Expert Solution

Manojponduru answered 1 year ago
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