Electrical Machines For satisfactory performance of 3-phase 480V, 60 Hz induction motor, the supply voltage at 50 Hz should be equal to 480 V. 400 V. 420 V. 350 V. 480 V. 400 V. 420 V. 350 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An inverted V-curve of synchronous motor shows the variation of power factor and dc excitation at constant load supply voltage and field current at constant excitation power factor and supply voltage during hunting All of these power factor and dc excitation at constant load supply voltage and field current at constant excitation power factor and supply voltage during hunting All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following represents the commutator pitch? Number of commutator segments between two successive coils. Number of conductors spanned by one coil at the front end of the armature. The distance between the staring of first coil and its next successive coil Number of conductors spanned by one coil at the back end of the armature. Number of commutator segments between two successive coils. Number of conductors spanned by one coil at the front end of the armature. The distance between the staring of first coil and its next successive coil Number of conductors spanned by one coil at the back end of the armature. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machine torque is proportional to which of the following? flux(φ) both A and B None of these armature current(Ia) flux(φ) both A and B None of these armature current(Ia) ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a transformer, hysteresis and eddy current losses depend upon maximum flux density load current both 2 and 3 supply frequency maximum flux density load current both 2 and 3 supply frequency ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines 3rd harmonics are eliminated in induction motor by using zig - zag connection. V connection. delta connection. star connection. zig - zag connection. V connection. delta connection. star connection. ANSWER DOWNLOAD EXAMIANS APP
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