Electrical Machines What is the effect of armature reaction ? None of the options. Both option B and C. Armature flux weakens the main field flux. Armature flux distorts the main field flux. None of the options. Both option B and C. Armature flux weakens the main field flux. Armature flux distorts the main field flux. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the reason for stationary armature essential in alternators above 5 KVA? All of these Operating cost is less. Insulation requirement is less. Collecting of large current is simple. All of these Operating cost is less. Insulation requirement is less. Collecting of large current is simple. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A lap wound DC machine has 400 conductors and 8 poles. The voltage induced per conductor is 2 volts. The machine generates a voltage of 400 V. 800 V. 100 V. 200 V. 400 V. 800 V. 100 V. 200 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The current drawn by a DC motor at the time of starting is Very low. Zero. Normal. Very high. Very low. Zero. Normal. Very high. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature mmf of a DC machine has trapezoidal space distribution and is stationary in space. triangular space distribution and rotates at the speed of armature. stepped distribution and rotates at the speed of armature. triangular space distribution and is stationary in space. trapezoidal space distribution and is stationary in space. triangular space distribution and rotates at the speed of armature. stepped distribution and rotates at the speed of armature. triangular space distribution and is stationary in space. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Slip rings of an induction motors are made of carbon. aluminium. phosphor bronze. stainless steel. carbon. aluminium. phosphor bronze. stainless steel. ANSWER DOWNLOAD EXAMIANS APP