Electrical Machines Stray losses in transformer occurs in steel core. transformer insulating oil. paper insulation in transformers. winding conductors and steel structures of transformer. steel core. transformer insulating oil. paper insulation in transformers. winding conductors and steel structures of transformer. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 2 pole synchronous machine is operating at 3000 rpm. Find the relation between electrical angular momentum (ωe) and mechanical angular momentum (ωm) ? ωe = ωm ωe = 4*ωm ωe = 1/2*ωm ωe = 2*ωm ωe = ωm ωe = 4*ωm ωe = 1/2*ωm ωe = 2*ωm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Short circuiting is caused in the armature winding due to failure of insulation between two turns of coil. grounding of two or more turns of the same coil. any of above. failure of insulation between two commutator bars. failure of insulation between two turns of coil. grounding of two or more turns of the same coil. any of above. failure of insulation between two commutator bars. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following statement is true for an AC synchronous motor? It is a variable speed motor. It is a step angled motor. It is a constant speed motor. It is a high reluctance motor. It is a variable speed motor. It is a step angled motor. It is a constant speed motor. It is a high reluctance motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following will vary the maximum torque? both 1 and 2 None of these rotor resistance R rotor reactance X both 1 and 2 None of these rotor resistance R rotor reactance X 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 4% and 5% from no load to full load. Consider the governors operating at 50Hz on no load. How will the machine share, if the load is 600 MW? generator 2 gets over load generator 1 gets over load 200 MW and 400MW None of these generator 2 gets over load generator 1 gets over load 200 MW and 400MW None of these ANSWER DOWNLOAD EXAMIANS APP
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