Answer / uma sanker dwivedi

GENERATOR WILL FAIL TO START AS THERE WILL NOT BE ANY
EXCITATION TO THE FIELD WINDINGS SO NO EMF WILL BE
GENERATED.

Answer / logeswaran

AVR is nothing but a automatic voltage regulator.it ill
regulate the field input based on terminal voltage either no
load or full load condition.

if AVR fails in alternator...?

The alternator output we will get only residual voltage at
no load condition based on the residual magnetism.

The residual Approximately for 1 & 3 phase 4 pole alternators:
min:4 V to max: 90 V.

Answer / satya dev ( knight frank)

The function of AVR in the Alternator is to controlled the
Alternator's voltage by controlling the excitation voltage
of stator, if The AVR fails on Load the voltage will be
reduced to zerro.

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