Electrical Machines which of the following losses are negligible in blocked rotor test? mechanical loss copper loss iron loss both A and B mechanical loss copper loss iron loss both A and B ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The output power of a dc motor is given by EIa. EbIa. none of these. EbIa2. EIa. EbIa. none of these. EbIa2. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What are the starters used for starting of cage motors? Auto transformer starter. Star-delta starter. All of these. DOL starter. Auto transformer starter. Star-delta starter. All of these. DOL starter. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC generator in case the brushes are moved so as to bring them in magnetic neutral axis, then, there will be demagnetisation. cross-magnetisation. cross-magnetization as well as demagnetization. none of above. demagnetisation. cross-magnetisation. cross-magnetization as well as demagnetization. none of above. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A compound dc generator is delivering full load current at a terminal voltage of 230 V. Its series-field winding gets short circuited. If its terminal voltage 1. becomes more than 230 V, it is overcompounded generator 2. becomes more than 230 V, it is differentially compounded generator 3. becomes less than 230 V, it is overcompounded generator 4. becomes less than 230 V, it is differentially compounded generator 5. becomes less than 230 V, it is level compounded generator From these, the correct answer is 2,3 1, 4, 5 1, 4 2, 3, 5 2,3 1, 4, 5 1, 4 2, 3, 5 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Commutator pitches of duplex and simplex lap windings are respectively 4 and 2 2 and 1 4 ang 1 2 and 2 4 and 2 2 and 1 4 ang 1 2 and 2 ANSWER DOWNLOAD EXAMIANS APP
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