Electrical Machines The slot edges in a DC machine are made of Silicon steel. Fibre. Cast iron. Mild steel. Silicon steel. Fibre. Cast iron. Mild steel. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the applied voltage of a certain transformer is increased by 50% and the frequency is reduced by 50%, the maximum flux density will (assuming that the magnetic circuit remains unsaturated) changes to 1.5 times the original value changes to three times the original value changes to 0.5 times the original value remain the same as the original changes to 1.5 times the original value changes to three times the original value changes to 0.5 times the original value remain the same as the original ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 3 - Φ wound rotor induction motor the short circuit gear is used to short circuit the starting resistance in the starter. None of these stator phases of the motor. rotor at slip rings. starting resistance in the starter. None of these stator phases of the motor. rotor at slip rings. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machine torque depends on which of the following? both A and B speed armature current (I) flux (φ) both A and B speed armature current (I) flux (φ) ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Field weakening method is also called as-----------? constant voltage control constant current control constant torque control constant power control constant voltage control constant current control constant torque control constant power control ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Where the shunt generators are widely used? Where a constant voltage is required over a narrow load range. Where often load fluctuation is occurred. Where voltage variation is needed over a wide load range. Where the load is very high. Where a constant voltage is required over a narrow load range. Where often load fluctuation is occurred. Where voltage variation is needed over a wide load range. Where the load is very high. ANSWER DOWNLOAD EXAMIANS APP
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