Electrical Machines Induction motors have the advantage of simple in construction. less cost. less maintenance. all of below. simple in construction. less cost. less maintenance. all of below. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines To have sparkless commutation, the armature reaction effect in a DC machine is neutralized by compensating winding and commutating poles. increasing field excitation. shifting the brush axis from GNA to MNA. fixing the brush axis inline with the pole axis. compensating winding and commutating poles. increasing field excitation. shifting the brush axis from GNA to MNA. fixing the brush axis inline with the pole axis. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If an induction machine is run at above the synchronous speed it acts as an induction motor a synchronous motor None of these an induction generator an induction motor a synchronous motor None of these an induction generator ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of induction motors the ratio of length to pole pitch for minimum cost, is taken as 2 to 3. 1.5 to 2. 3 to 5. 1.0. 2 to 3. 1.5 to 2. 3 to 5. 1.0. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What will be the e.m.f. generated by a 4 pole lap connected DC Generator rotating at 1500 r.p.m.? Its flux per pole is 0.4 mWb and total no of armature conductors is 1000. 40 volts. 30 volts. 10 volts. 20 volts. 40 volts. 30 volts. 10 volts. 20 volts. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An induction motor is, in general analogous to two winding transformer with secondary open circuited. auto transformer. two winding transformer with secondary short circuited. None of these two winding transformer with secondary open circuited. auto transformer. two winding transformer with secondary short circuited. None of these ANSWER DOWNLOAD EXAMIANS APP
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