Electrical Machines Satisfactory commutation of DC machine requires All of these brushes should smoothly run in the holders. brushes should be of proper grade and size. smooth, concentric commutator properly undercut. All of these brushes should smoothly run in the holders. brushes should be of proper grade and size. smooth, concentric commutator properly undercut. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The type of DC generator used for arc welding purpose is a differentially compounded generator shunt generator cumulatively compounded generator series generator differentially compounded generator shunt generator cumulatively compounded generator series generator ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Consider the following statements : Interpoles in dc machines 1. reducearmature reaction effects in the interpolar region 2. have the same dimension as main polls 3. have their windings connected in series with the armature 4. have same number of turns as the armature 5. have the polarity same as that of the main pole ahead in a motor From these, the correct statements are 1 and 3 1, 2 and 3 1, 3 and 5 1, 2, 3 and 5 1 and 3 1, 2 and 3 1, 3 and 5 1, 2, 3 and 5 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A differentially compound motor under high-over-load conditions will behave like a / an shunt motor. AC synchronous motor. series motor. cummulative compound motor. shunt motor. AC synchronous motor. series motor. cummulative compound motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The application that need frequent starting and stopping is jaw crushers. paper mills. lifts and hoists. blowers. jaw crushers. paper mills. lifts and hoists. blowers. 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. 20 volts. 30 volts. 40 volts. 10 volts. 20 volts. 30 volts. 40 volts. 10 volts. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS