Electrical Machines A 240 V DC series motor takes 40 A when giving its rated output at 1500 rpm. Its resistance is 0.3 ohms. The value of resistance which must be added to obtain rated torque at 1000 rpm is 5.7 ohms. 2.2 ohms. 1.9 ohms. 6 ohms. 5.7 ohms. 2.2 ohms. 1.9 ohms. 6 ohms. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The sequence of induction motor is RYB, then the direction of induction motor can be changed by which of the following sequence? All of these BYR BRY RBY All of these BYR BRY RBY ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Damper winding is used to decrease the load current. both 1 and 2. increase the load current. suppress the hunting. decrease the load current. both 1 and 2. increase the load current. suppress the hunting. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For high current and low voltage rating which winding is employed to DC machine? Wave winding. Both wave and lap winding. No wave and lap winding. Lap winding. Wave winding. Both wave and lap winding. No wave and lap winding. Lap winding. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A differentially compound motor under high-over-load conditions will behave like a / an AC synchronous motor. cummulative compound motor. series motor. shunt motor. AC synchronous motor. cummulative compound motor. series motor. shunt motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC generator, the ripples in the direct emf generated are reduced by employing graphite brushes. carbon brushes. equalizer rings. commutator with large number of segments. graphite brushes. carbon brushes. equalizer rings. commutator with large number of segments. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS