Transformers In Ns is the synchronous speed and s the slip, then actual running speed of an induction motor will be s.N. (Ns-l)s (l-s)Ns Ns s.N. (Ns-l)s (l-s)Ns Ns ANSWER DOWNLOAD EXAMIANS APP
Transformers The transformer that should never the secondary open circuited when primary is energised is _______ Power transformer Auto transformer Voltage transformer Current transformer Power transformer Auto transformer Voltage transformer Current transformer ANSWER DOWNLOAD EXAMIANS APP
Transformers Which type of winding is used in 3phase shell-type transformer? Sandwich type Circular type Cylindrical type Rectangular type Sandwich type Circular type Cylindrical type Rectangular type ANSWER DOWNLOAD EXAMIANS APP
Transformers The efficiency of a transformer will be maximum when ______ Leakage reactance of the two winding Copper loss is equal to constant loss None of the listed here Resistance of the two winding are equal Leakage reactance of the two winding Copper loss is equal to constant loss None of the listed here Resistance of the two winding are equal ANSWER DOWNLOAD EXAMIANS APP
Transformers If a transformer core has air gaps, then, _________ Reluctance of magnetic path is decreased Magnetising current is greatly increased Eddy current is increased Hysteresis loss is decreased Reluctance of magnetic path is decreased Magnetising current is greatly increased Eddy current is increased Hysteresis loss is decreased ANSWER DOWNLOAD EXAMIANS APP
Transformers Transformer breaths in when load on it increases load on it decreases None of these load remains constant load on it increases load on it decreases None of these load remains constant ANSWER DOWNLOAD EXAMIANS APP
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