Electrical Machines The commutator segments of DC machines are made up of copper hard-drawn copper copper alloy brass copper hard-drawn copper copper alloy brass ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The slip of an induction motor during DC rheostatic braking is 1 - s. s. 2 - s. 2 + s. 1 - s. s. 2 - s. 2 + s. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The speed of a DC series motor is Proportional to the armature current. Proportional to the square of the armature current. Inversely proportional to the armature current. Proportional to field current. Proportional to the armature current. Proportional to the square of the armature current. Inversely proportional to the armature current. Proportional to field current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A separately-excited DC generator, running at rated speed, has 6 volts across its armature terminals with no field current. When field winding is excited with one ampere, the voltage builds up to 250 V at no load. In case field current is reduced to zero, with the speed remaining unaltered, the armature terminal voltage would be zero more than 6 V 6 V less than 6 V zero more than 6 V 6 V less than 6 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What type of connection is made in between the inter-pole and the field winding? Compound. None of the options. Series. Parallel. Compound. None of the options. Series. Parallel. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Field divertor method of speed control of a DC series motor gives speed above rated one due to reduction of Line current. None of above. Armature current. Field current. Line current. None of above. Armature current. Field current. ANSWER DOWNLOAD EXAMIANS APP
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