Electrical Machines If the full load speed of 3-phase, 50Hz induction motor is 950 rpm, what is its half load speed nearly equals to? 950 rpm 1000 rpm 940 rpm 975 rpm 950 rpm 1000 rpm 940 rpm 975 rpm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole lap wound dc generator has 4 brushes, if one of the brush is damaged, what will be the change in V, I and P ratings V, I and P V/2, I and P/2 V, I/2 and P/2 V/2, I/2 and P/4 V, I and P V/2, I and P/2 V, I/2 and P/2 V/2, I/2 and P/4 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In dc machines, the field-flux axis and armature-mmf axis are respectively along direct axis and indirect axis direct axis and interpolar axis quadrature axis and interpolar axis quadrature axis and direct axis direct axis and indirect axis direct axis and interpolar axis quadrature axis and interpolar axis quadrature axis and direct axis ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 12 pole triplex lap wound DC armature, each conductor can carry current of 100 A. The rated current of this armature is 600 A. 2400 A. 3600 A. 1200 A. 600 A. 2400 A. 3600 A. 1200 A. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Addition of 0.3 % to 4.5 % silicon to iron None of these increases the electrical resistivity of iron. reduces the saturation magnetization. increases the hysteresis loss. None of these increases the electrical resistivity of iron. reduces the saturation magnetization. increases the hysteresis loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an alternator the voltage generated per phase is proportional to frequency of waveform. flux per pole. number of turns in coil. All of these frequency of waveform. flux per pole. number of turns in coil. All of these ANSWER DOWNLOAD EXAMIANS APP
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