Electrical Machines 1 KVA, 230 V, 50 Hz, single phase transformer has an eddy current loss of 30 watts. The eddy current loss when the transformer is excited by a dc source of same voltage will be 30 W zero watt less than 30 W more than 30 W 30 W zero watt less than 30 W more than 30 W ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC Motor 3 point starter is used to provide protection against Low-Voltage. provide overload protection. all of above. limit the starting current to a safer value. provide protection against Low-Voltage. provide overload protection. all of above. limit the starting current to a safer value. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a transformer operating at constant voltage if the input frequency increases, the core loss decrease. increase. None of these remains constant. decrease. increase. None of these remains constant. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In IM the rotor lamination can be ________________ than stator laminations. sipper. rotor can not have any laminations. thicker. thinner. sipper. rotor can not have any laminations. thicker. thinner. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines which of the following type of brush and their application is/are correct electro graphite → large ratings copper graphite → low voltage high current density All of these carbon brush → normal ratings electro graphite → large ratings copper graphite → low voltage high current density All of these carbon brush → normal ratings ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Eg (generated emf) and Eb (back emf) both are none of above. same. different. changes. none of above. same. different. changes. ANSWER DOWNLOAD EXAMIANS APP
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