Electrical Machines What is power factor of a 3 - φ induction motor at no load? High. Same as full load. Low. Equal to 1. High. Same as full load. Low. Equal to 1. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Winding conductors of an electrical power transformer are mainly insulated by cotton insulation. rubber insulation. wooden insulation. paper insulation. cotton insulation. rubber insulation. wooden insulation. paper insulation. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two synchronous generators operating in parallel 200 MW and 400 MW respectively. The drooping characteristics of their governors are identical as 4% from no load to full load. Consider the governors operating at 50Hz on no load. What is the operating frequency, if the load is 600 MW? 45 HZ 48 Hz 48.5 Hz 50 Hz 45 HZ 48 Hz 48.5 Hz 50 Hz ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines stepped cores are used in transformers in order to reduce reluctance of core. volume of copper. iron loss. volume of iron. reluctance of core. volume of copper. iron loss. volume of iron. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Consider the following statements : 1. interpole windings are connected in series with armature windings 2. polarity of interpoles must be the same as that of the main poles in advance 3. distortion of the main field under the pole shoes is not affected by the use of interpoles From above, the correct answer is 1 and 2 2 and 3 1 alone 1 and 3 1 and 2 2 and 3 1 alone 1 and 3 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Eddy current loss will depends on Flux density Thickness Frequency All of these Flux density Thickness Frequency All of these ANSWER DOWNLOAD EXAMIANS APP
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