Electrical Machines The demagnetising component of armature reaction in a DC generator reduces inter poles flux density. reduces generator emf. increases armature speed. results in sparking trouble. reduces inter poles flux density. reduces generator emf. increases armature speed. results in sparking trouble. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature coil is short circuited by brushes when it lies in none of above positions. along field axis. in any of above positions. along neutral axis. in none of above positions. along field axis. in any of above positions. along neutral axis. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Rotating part of DC motor is known as Pole. Armature. Carbone brush. Starter. Pole. Armature. Carbone brush. Starter. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two dc machines A and B, using the same conductor material, have armature circuit resistances of 0.4 Ω and 1.2 Ω respectively. Of the two machines, both are of the same size for the same current rating B is bigger than A for the same current rating A is bigger than B for the same current rating A is bigger than B for the same voltage rating both are of the same size for the same current rating B is bigger than A for the same current rating A is bigger than B for the same current rating A is bigger than B for the same voltage rating ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Skewing of the rotor in a 3 - Φ squirrel cage induction motor reduces noise, parasitic torque, starting torque and pull out torque. noise, parasitic and starting torque, but increase pull out torque. noise and pullout torque, but increase parasitic and starting torque. noise and parasitic torque, but increase starting and pull-out torque. noise, parasitic torque, starting torque and pull out torque. noise, parasitic and starting torque, but increase pull out torque. noise and pullout torque, but increase parasitic and starting torque. noise and parasitic torque, but increase starting and pull-out torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In travelling cranes for hoisting and lowering which type of motor is preferred? DC series motor. Synchronous motor. AC slip ring motor. Single phase induction motor. DC series motor. Synchronous motor. AC slip ring motor. Single phase induction motor. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS