Electrical Machines Normally for the design of transformer the ambient temperature is taken as 27°C. 35°C. 32°C. 45°C. 27°C. 35°C. 32°C. 45°C. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature reaction in dc motor results increase in speed. decrease in speed. open circuit. short circuit. increase in speed. decrease in speed. open circuit. short circuit. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The brushes of a DC machine should be placed on the commutator in the inter polar axis. armature midway between poles. commutator in the polar axis. armature in the polar axis. commutator in the inter polar axis. armature midway between poles. commutator in the polar axis. armature in the polar axis. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 10 kW, 230 V, dc shunt machine has four terminals brought out through four leads. For this machine armature winding has thick leads whereas field winding has thin leads both the windings have thick leads armature winding has thin leads whereas field winding has thick leads both the windings have thin leads armature winding has thick leads whereas field winding has thin leads both the windings have thick leads armature winding has thin leads whereas field winding has thick leads both the windings have thin leads ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines How can the synchronous speed of a 3 - Φ IM be varied? By varying supply voltage. By varying the supply frequency. Both (A) and (B). By varying number of poles. By varying supply voltage. By varying the supply frequency. Both (A) and (B). By varying number of poles. 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 8. 4. 2. 1. 8. 4. 2. 1. ANSWER DOWNLOAD EXAMIANS APP
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