Electrical Machines A single phase transformer when supplied from 220 V, 50 Hz has eddy current loss of 50 W. If the transformer is connected voltage of 330 V, 75 Hz, the eddy current loss will be 50 W 112.5 W 168.75 W 75 W 50 W 112.5 W 168.75 W 75 W ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3 - Φ, 4 pole IM is supplied from a 50 Hz source. Calculate rotor frequency when rotor runs 600 rpm? 30 Hz. 35 Hz. Can be determined. 20 Hz. 30 Hz. 35 Hz. Can be determined. 20 Hz. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The shaft of induction motor may be unbalanced due to overheating of winding. uneven air gap. poor lubrication. overload. overheating of winding. uneven air gap. poor lubrication. overload. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generators, the brushes remain in contact with conductors which lie under south pole. lie in the inter polar gaps. lie under north pole. there is no hard and fast rule for this. lie under south pole. lie in the inter polar gaps. lie under north pole. there is no hard and fast rule for this. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which motor cannot be started on no load? shunt motors cumulative compound motors both B and C series motors shunt motors cumulative compound motors both B and C series motors ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The direction of rotation of a DC compound motor can be reversed by interchanging series field connections. armature connections. shunt field connections. armature or field connections. series field connections. armature connections. shunt field connections. armature or field connections. ANSWER DOWNLOAD EXAMIANS APP
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