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. Number of secondary turns is less than primary turns. Secondary current is less than primary current. Number of secondary turns is more than that of primary. Secondary power is less than primary power. Number of secondary turns is less than primary turns. Secondary current is less than primary current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An ideal synchronous motor has no starting torque because relative velocity between stator and rotor mmf’s is not zero. rotor winding is highly reactive. relative velocity between the stator and rotor mmf’s is zero. rotor is made up of salient poles. relative velocity between stator and rotor mmf’s is not zero. rotor winding is highly reactive. relative velocity between the stator and rotor mmf’s is zero. rotor is made up of salient poles. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the full form of MNP? Magnetic field neutral plane. Magnetic neutral plane. Magnetic neutral pole. Magnetic field neutral pole. Magnetic field neutral plane. Magnetic neutral plane. Magnetic neutral pole. Magnetic field neutral pole. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which type of single phase induction motor is having the highest power factor at full load ? Capacitor start. Split phase type. Shaded pole type. Capacitor run type. Capacitor start. Split phase type. Shaded pole type. Capacitor run type. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Transformer cooling and insulating oil must be of low BDV. low viscosity. high viscosity. low resistivity. low BDV. low viscosity. high viscosity. low resistivity. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A compound dc generator is delivering full load current at a terminal voltage of 230 V. Its series-field winding gets short circuited. If its terminal voltage 1. becomes more than 230 V, it is overcompounded generator 2. becomes more than 230 V, it is differentially compounded generator 3. becomes less than 230 V, it is overcompounded generator 4. becomes less than 230 V, it is differentially compounded generator 5. becomes less than 230 V, it is level compounded generator From these, the correct answer is 1, 4 2, 3, 5 2,3 1, 4, 5 1, 4 2, 3, 5 2,3 1, 4, 5 ANSWER DOWNLOAD EXAMIANS APP
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