Turbo alternator are generally used to run at 5000 rpm 1500 rpm 3000 rpm 15000 rpm TRUE ANSWER : ? YOUR ANSWER : ?
In aircrafts, alternators have operating frequency of 60 Hz 50 Hz 400 Hz 800 Hz TRUE ANSWER : ? YOUR ANSWER : ?
High speed alternators are driven by _____. Hydraulic turbines Steam turbines Diesel engines None of the listed here TRUE ANSWER : ? YOUR ANSWER : ?
Armature winding of an alternator are generally Closed winding None of the listed here Partly open and partly closed windings Open winding TRUE ANSWER : ? YOUR ANSWER : ?
In an alternator the armature reaction is mainly influenced by The power factor of the load Short circuit ratio Speed of the alternator Total current drawn TRUE ANSWER : ? YOUR ANSWER : ?
In an alternator, armature reaction is considered equivalent to Fictitious resistance Fictitious reactance Fictitious conductance Fictitious impedance TRUE ANSWER : ? YOUR ANSWER : ?
In an alternator, the frequency of voltage generated depend on Number of poles only Both rotative speed and number of poles Rotative speed only None of the listed here TRUE ANSWER : ? YOUR ANSWER : ?
When the speed of an alternator is reduced by half, the generated emf will become Half One-fourth Four times Twice TRUE ANSWER : ? YOUR ANSWER : ?
The stator of an alternator is identical to that of a ______ 1-phase induction motor 3-phase induction motor Dc generator Roserberg generator TRUE ANSWER : ? YOUR ANSWER : ?
The magnitude of emf generated by an alternators depends on ______ Rotor speed Flux per pole Number of poles All of the listed here TRUE ANSWER : ? YOUR ANSWER : ?