Electrical Machines When pure inductive load is connected to the alternator, what is the effect of armature reaction? Demagnetization Magnetization None of these Cross magnetization Demagnetization Magnetization None of these Cross magnetization ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A single-phase transformer has its maximum efficiency at 60 percent of full load. At full load copper loss will be equal to core loss. zero. less than core loss. more than core loss. equal to core loss. zero. less than core loss. more than core loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC series motor is running at rated speed without any additional resistance in series. If an additional resistance is placedin series, the speed of motor Increases. Remains unchanged. Oscillates around the rated speed. Decreases. Increases. Remains unchanged. Oscillates around the rated speed. Decreases. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following is not a part of transformer? Tap changer. Commutator. Radiator. Conservator tank. Tap changer. Commutator. Radiator. Conservator tank. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In the V curve shown in figure below for a synchronous motor, the parameter of Y and X coordinates are, respectively Torque and field current. Power factor and field current. Armature current and torque. Armature current and field current. Torque and field current. Power factor and field current. Armature current and torque. Armature current and field current. 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 800 V. 100 V. 200 V. 400 V. 800 V. 100 V. 200 V. 400 V. ANSWER DOWNLOAD EXAMIANS APP
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