Electrical Machines Which of the following methods are used to control the speed of DC motors is All of these supply voltage control armature circuit resistance control field current control All of these supply voltage control armature circuit resistance control field current control ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Find the developed torque DC Series Motor having armature resistance of 0.2 Ω and taking armature current of 60 A is connected to 250 V supply. Considered brush drop of 1 V each. cant be determined. 234.76 N-m. 266.20 N-m. 133.22 N-m cant be determined. 234.76 N-m. 266.20 N-m. 133.22 N-m ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generators, electric current to the external circuit from armature is given through slip rings. commutator. none of above. solid connection. slip rings. commutator. none of above. solid connection. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Regenerative braking is not found in which motor? DC series. DC compound. Induction motor. DC shunt. DC series. DC compound. Induction motor. DC shunt. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 3 - Φ induction motor none of them. power factor at starting in the same as that while running. power factor at starting is high as compared to that while running. power factor at starting is low as compared to that while running. none of them. power factor at starting in the same as that while running. power factor at starting is high as compared to that while running. power factor at starting is low as compared to that while running. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The speed of a DC series motor is Proportional to field current. Proportional to the square of the armature current. Inversely proportional to the armature current. Proportional to the armature current. Proportional to field current. Proportional to the square of the armature current. Inversely proportional to the armature current. Proportional to the armature current. ANSWER DOWNLOAD EXAMIANS APP
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