Electrical Machines In a 6 pole DC machine, 90 mechanical degrees correspond to which of the following electrical degree? 180. 30. 270. 45. 180. 30. 270. 45. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following voltage regulator is preferred for providing large values of load current? Transistor series regulator. Transistor shunt regulator. Zener diode shunt regulator. None of these Transistor series regulator. Transistor shunt regulator. Zener diode shunt regulator. None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two transformers with identical rating, are designed with flux densities of 1.2 and 1.4 Wb / m2 respectively. The weight of first transformer per kVA is more than that of second transformer. equal to that of second transformer. none of these. less than that of second transformer. more than that of second transformer. equal to that of second transformer. none of these. less than that of second transformer. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 250 V DC generator in run at rated speed with no excitation. The open circuit voltage will be 250 V. about 100 V. zero. very small, say about 2 or 3 V. 250 V. about 100 V. zero. very small, say about 2 or 3 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When pure inductive load is connected to the alternator, what is the effect of armature reaction? Cross magnetization Magnetization Demagnetization None of these Cross magnetization Magnetization Demagnetization None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines DC generators are usually designed to develop armature voltages not exceeding 650 V because of the limitations imposed by field winding starters armature winding commutator field winding starters armature winding commutator ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS