Electrical Machines A synchronous motor will deliver maximum power when load angle is 0°. load angle is 45°. input power factor is unity. load angle is equal to internal angle θ. load angle is 0°. load angle is 45°. input power factor is unity. load angle is equal to internal angle θ. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The output indicate on the name plate of any motor is always the Gross power. Power drawn in KVA. Output power at the shaft. Power drawn in KW. Gross power. Power drawn in KVA. Output power at the shaft. Power drawn in KW. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machine, the armature windings are placed on the rotor because of necessity for generation of voltage. commutation. electromechanical energy conversion. development of torque. generation of voltage. commutation. electromechanical energy conversion. development of torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a transformer which of the following losses are zero? Rotational loss Iron loss All of these Copper loss Rotational loss Iron loss All of these Copper loss ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If a transformer has turns ratio K, the primary and secondary current are I1 and I2 respectively and magnetizing current and core loss component of no load current Iμ and Iw respectively, then I1 = KI2 + Iw + Iμ.ok I1 = KI2. I1 = KI2 + Iw. I1 = KI2 + Iμ. I1 = KI2 + Iw + Iμ.ok I1 = KI2. I1 = KI2 + Iw. I1 = KI2 + Iμ. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Under commutation results in sparking at the leading edge of the brush. sparking at the middle of the brush. no sparking. sparking the trailing edge of the brush. sparking at the leading edge of the brush. sparking at the middle of the brush. no sparking. sparking the trailing edge of the brush. ANSWER DOWNLOAD EXAMIANS APP
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