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 The effect of ------------------ on main field flux is armature reaction? armature mmf All of these armature current armature flux armature mmf All of these armature current armature flux ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines At slip s = 1 torque developed in machine is maximum torque. electromagnetic torque. starting torque. none. maximum torque. electromagnetic torque. starting torque. none. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An inverted V-curve of synchronous motor shows the variation of All of these power factor and supply voltage during hunting supply voltage and field current at constant excitation power factor and dc excitation at constant load All of these power factor and supply voltage during hunting supply voltage and field current at constant excitation power factor and dc excitation at constant load ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In salient pole synchronous machine, maximum power occurs at a load angle of 90° Greater than 90° less than 90° 0° 90° Greater than 90° less than 90° 0° ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Consider a separately excited DC motor. If the field current is increased while the armature terminal voltage is held constant, then speed of the motor will Decrease.d none of these. remains same. increase. Decrease.d none of these. remains same. increase. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS