Electrical Machines Lamination of transformer core is made of wrought iron. cast steel. silicon steel. cast iron. wrought iron. cast steel. silicon steel. cast iron. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 500 V, 120 KW, 50 Hz, star connected synchronous motor operating at 0.8 power factor leading has full load efficiency of 91%. The armature resistance is equal to 0.08Ω. The magnitude of armature current is nearly equal to 127 A. 240 A. 190 A. 173 A. 127 A. 240 A. 190 A. 173 A. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The emf induced in a conductor rotating in a bipolar field is both of above. AC. None of these DC. both of above. AC. None of these DC. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The field divertor resistance for a DC series motor is of order of 100 Ω 0.1 Ω 10 Ω 50 Ω 100 Ω 0.1 Ω 10 Ω 50 Ω ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Voltage across the open circuited field termninals of a synchorous machine under slip test is AC of supply frequency. A modulated supply frequency AC voltage with slip frequency envelop. DC. DC of slip frequency. AC of supply frequency. A modulated supply frequency AC voltage with slip frequency envelop. DC. DC of slip frequency. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When two DC series motors are connected in parallel, the resultant speed is zero. normal speed. more than normal speed. less than normal speed. zero. normal speed. more than normal speed. less than normal speed. ANSWER DOWNLOAD EXAMIANS APP
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