Electrical Machines What is the mechanical power developed by a DC series motor is maximum? None of above. Back emf is equal to applied voltage. Back emf is equal to half the applied voltage. Back emf is equal to zero. None of above. Back emf is equal to applied voltage. Back emf is equal to half the applied voltage. Back emf is equal to zero. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The stator core of a 3 - Φ induction motor is laminated in order to reduce the hysteresis loss. both of the above. weight of the stator. eddy current loss. hysteresis loss. both of the above. weight of the stator. eddy current loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a step down transformer which one of the following statements is true? Number of secondary turns is more than that of primary. Secondary power is less than primary power. Secondary current is less than primary current. Number of secondary turns is less than primary turns. Number of secondary turns is more than that of primary. Secondary power is less than primary power. Secondary current is less than primary current. Number of secondary turns is less than primary turns. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature of DC motor is laminated to reduce the mass. to reduce the eddy current loss. to reduce the inductor. to reduce the hysteresis loss. to reduce the mass. to reduce the eddy current loss. to reduce the inductor. to reduce the hysteresis loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If terminal voltage of one 1000 rpm shunt motor is reduced to half the speed of the motor will be 250 rpm 2000 rpm 1000 rpm 500 rpm 250 rpm 2000 rpm 1000 rpm 500 rpm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 2 pole lap winding dc machine , the resistance of one conductor is 2Ω and total number of conductors is 100. Find the total resistance 50Ω 200Ω 100Ω 10Ω 50Ω 200Ω 100Ω 10Ω ANSWER DOWNLOAD EXAMIANS APP
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