Electrical Machines If we increase the rotor reactance value, the maximum torque will None of these decrease not changed increase None of these decrease not changed increase ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines which of the following type of brush and their application is/are correct copper graphite → low voltage high current density electro graphite → large ratings All of these carbon brush → normal ratings copper graphite → low voltage high current density electro graphite → large ratings All of these carbon brush → normal ratings ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3 - Φ, 400 / 200 V, Y - Y connected wound rotor induction motor has 0.06 Ω rotor resistance and 0.3 Ω standstill reactance per phase. To make the starting torque equal to maximum torque of the motor the additional resistance required 0.78 Ω. 0.45 Ω. 0.24 Ω. 0.66 Ω. 0.78 Ω. 0.45 Ω. 0.24 Ω. 0.66 Ω. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When the mechanical power is developed by a DC motor maximum Back emf is equal to half of applied voltage. Back emf is equal. back emf is equal to applied voltage. None of above. Back emf is equal to half of applied voltage. Back emf is equal. back emf is equal to applied voltage. None of above. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The material used for commutator brushes is mostly carbon. cast iron. mica. copper. carbon. cast iron. mica. copper. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which is the arrangement of windings in a core type single phase transformer? Half lv inside and half hv outside on each core limb Lv on one core limb and hv on the other Half hv inside and half lv outside on each core limb Sandwiched lv and hv discs on each core limb Half lv inside and half hv outside on each core limb Lv on one core limb and hv on the other Half hv inside and half lv outside on each core limb Sandwiched lv and hv discs on each core limb ANSWER DOWNLOAD EXAMIANS APP
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