In a 3-phase ac power transmission system using synchronous

Electrical Engineering

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In a 3-phase ac power transmission system using synchronous generation

[ESE (IES) EE 2017 (Technical)]

A The steady state power limits of both round rotor and salient pole machines are reached θ = π/2 of their respective power angle characteristics.

B the steady state power limit of round rotor motor machiens occurs at a much smaller angle θ as compared to that of salient pole machine power angle characteristics.

C The steady state power limit of salient pole machines occurs at smaller angle θ as compared to that of round rotor machine power angle characteristics.

D The transient state power limits of synchronous gemnerators do not depend on initial load just before the large change in load or on 3-phase fault.