Salient features of turbo alternator: 1) Turbo-alternators are high-speed alternators (3000 rpm). 2) Rotor diameter is kept less to limit the centrifugal force acting on field winding on rotor at high speeds. 3) Rotor axial length (along shaft) is more. 4) Cylindrical rotor construction (non-salient pole) is used. 5) Field poles are less in number either 2 or 4.
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