Electrical Machines The current drawn by the a 230 V DC motor of armature resistance 0.5 Ω and back emf 200 V is 40 60 660 600 40 60 660 600 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following methods are used to control the speed of DC motors is armature circuit resistance control supply voltage control All of these field current control armature circuit resistance control supply voltage control All of these field current control ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC series motor is accidentally connected to single phase ac supply voltage. The torque produced will be oscillating steady and unidirectional None of these pulsating and unidirectional oscillating steady and unidirectional None of these pulsating and unidirectional ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the increase in the torque expressed as percentage of initial torque, if current drawn by the dc series motor is increased from 10A to 11A? 41% 10% 11% 21% 41% 10% 11% 21% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A flat compound generator is obtained from compound generator by connecting a variable resistor in series with the shunt field in parallel with the series field in parallel with the shunt field in series with the series field in series with the shunt field in parallel with the series field in parallel with the shunt field in series with the series field ANSWER DOWNLOAD EXAMIANS APP
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