Electrical Machines Which of the following methods are used to control the speed of DC motors is armature circuit resistance control field current control All of these supply voltage control armature circuit resistance control field current control All of these supply voltage control ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which type of motors are used for lathes? DC shunt motors. Cage induction motor. Either A or B. Synchronous motor. DC shunt motors. Cage induction motor. Either A or B. Synchronous motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The synchronous reactance( Xs) is the reactance either due to armature reaction or leakage flux combined reactance due to armature reaction and leakage flux reactance due to armature reaction of the machine reactance due to leakage flux reactance either due to armature reaction or leakage flux combined reactance due to armature reaction and leakage flux reactance due to armature reaction of the machine reactance due to leakage flux ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The current drawn by a 220 V DC series motor of armature resistance 0.5 Ω and back emf of 200 V is 400 A. 440 A. 44 A. 40 A. 400 A. 440 A. 44 A. 40 A. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a transformer operating at constant voltage if the input frequency increases, the core loss remains constant. decrease. increase. None of these remains constant. decrease. increase. None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines DC machine is a conduction machine. both are correct. convection machine. none of above are correct. conduction machine. both are correct. convection machine. none of above are correct. ANSWER DOWNLOAD EXAMIANS APP
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