Electrical Machines Induction motors have the advantage of simple in construction. all of below. less maintenance. less cost. simple in construction. all of below. less maintenance. less cost. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The commutator segments of DC machines are made up of hard-drawn copper copper alloy copper brass hard-drawn copper copper alloy copper brass ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature reaction of an unsaturated DC machine is crossmagnetising. none of above. demagnetising. magnetising. crossmagnetising. none of above. demagnetising. magnetising. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A separately-excited dc motor has an armature resistance of 0.5 Ω. It runs off a 250 V dc supply Drawing an armature current of 20 A at 1500 rpm. The torque developed for an armature current Of 10 A, for the same field current, will be 16.55 Nm 15.6 Nm 15.28 Nm 15.92 Nm 16.55 Nm 15.6 Nm 15.28 Nm 15.92 Nm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The demagnetising component of armature reaction in a DC generator reduces inter poles flux density. reduces generator emf. results in sparking trouble. increases armature speed. reduces inter poles flux density. reduces generator emf. results in sparking trouble. increases armature speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If a DC Series motor is connected across an AC supply it will run at normal speed. run at lower speed. not run. burn. run at normal speed. run at lower speed. not run. burn. ANSWER DOWNLOAD EXAMIANS APP
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