Electrical Machines A delta/star transformer is connected in parallel to a star/delta transformer. The turn ratio former is x times latter, the x is 1/√3 1/3 3 √3 1/√3 1/3 3 √3 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 3 - Φ wound rotor induction motor the short circuit gear is used to short circuit the stator phases of the motor. None of these starting resistance in the starter. rotor at slip rings. stator phases of the motor. None of these starting resistance in the starter. rotor at slip rings. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If dimension of all the parts of a synchorous generator and the number of field and armature turns are double, then generated voltage will change by a factor of 1. 2. 4. 8. 1. 2. 4. 8. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 250 V DC generator in run at rated speed with no excitation. The open circuit voltage will be zero. 250 V. very small, say about 2 or 3 V. about 100 V. zero. 250 V. very small, say about 2 or 3 V. about 100 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The stator frame in an induction motor is used to protect the whole machine. provide return path for the flux. ventilate the armature. hold armature stamping in position. protect the whole machine. provide return path for the flux. ventilate the armature. hold armature stamping in position. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature core of a DC machine is laminated to minimise eddy-current loss temperature rise mechanical loss hysteresis loss eddy-current loss temperature rise mechanical loss hysteresis loss ANSWER DOWNLOAD EXAMIANS APP
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