Electrical Machines In a transformer zero voltage regulation is achieved at a load power factor which is unity lagging zero leading unity lagging zero leading ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In salient pole synchronous machine, the reluctance power varies as sin2δ cos2δ cosδ sinδ sin2δ cos2δ cosδ sinδ ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the excitation of the synchronous generator fails, it acts as a/an synchronous motor. induction motor. synchronous generator. induction generator. synchronous motor. induction motor. synchronous generator. induction generator. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following starter is sufficient to start the DC series motor ? 4 point starter All of these 2 point starter 3 point starter 4 point starter All of these 2 point starter 3 point starter ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An inverted V curve of synchronous motor shows variation of power factor and supply voltage during hunting. supply voltage and field current at constant excitation. supply voltage and excitation current at constant load. power factor and DC excitation at constant load. power factor and supply voltage during hunting. supply voltage and field current at constant excitation. supply voltage and excitation current at constant load. power factor and DC excitation at constant load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the mechanical power developed by a DC series motor is maximum? None of above. Back emf is equal to half the applied voltage. Back emf is equal to applied voltage. Back emf is equal to zero. None of above. Back emf is equal to half the applied voltage. Back emf is equal to applied voltage. Back emf is equal to zero. ANSWER DOWNLOAD EXAMIANS APP
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