Electrical Machines In V/f speed control of 3-phase induction motor, with increase in frequency, the slip at which maximum torque occurs either of these. increase. decrease. None of these either of these. increase. decrease. None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The core flux in transformer depends mainly on supply voltage and load supply voltage supply voltage and frequency supply voltage, frequency and load supply voltage and load supply voltage supply voltage and frequency supply voltage, frequency and load ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What type of dielectric material is used in capacitors used for fans and for power factor correction? Oil impregnated paper. Glass. Mica. Vacuum. Oil impregnated paper. Glass. Mica. Vacuum. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines which of the following type of brush and their application is/are correct electro graphite → large ratings copper graphite → low voltage high current density carbon brush → normal ratings All of these electro graphite → large ratings copper graphite → low voltage high current density carbon brush → normal ratings All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The ventilating ducts in most of DC machine are radial. longitudinal. none of these. radial as well as longitudinal. radial. longitudinal. none of these. radial as well as longitudinal. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a dc machine, the demagnetizing effect of armature reaction is due to magnetic saturation in half of the field pole non-sinusoidal nature of armature mmf component of armature mmf along field axis uneven air-gap length magnetic saturation in half of the field pole non-sinusoidal nature of armature mmf component of armature mmf along field axis uneven air-gap length ANSWER DOWNLOAD EXAMIANS APP
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