Electrical Machines A delta/star transformer is connected in parallel to a star/delta transformer. The turn ratio former is x times latter, the x is 1/3 1/√3 √3 3 1/3 1/√3 √3 3 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Flashing the field of DC generator means neutralising residual magnetism. creating residual magnetism by a DC source. making the magnetic losses forces parallel. increasing flux density by adding extra turns of winding. neutralising residual magnetism. creating residual magnetism by a DC source. making the magnetic losses forces parallel. increasing flux density by adding extra turns of winding. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Voltage regulation of transformer is given by (E2 - V2) / E2 (E2 - V2) / V2 (V2 - E2) / V2 (V2 - E2) / E2 (E2 - V2) / E2 (E2 - V2) / V2 (V2 - E2) / V2 (V2 - E2) / E2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two generators G1 and G2 are to be operated in parallel to deliver a total current of 60 A. Generator one has a terminal voltage of 280 V on no load and 240 V when supplying 40 A current. Similarly the second generator has a voltage of 300 V when on no load and 240 V when supplying of 50 A of current. The output voltage of each generator will be 238.2 V. 240 V. 256.4 V. 271.7 V. 238.2 V. 240 V. 256.4 V. 271.7 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Short circuiting is caused in the armature winding due to failure of insulation between two turns of coil. any of above. failure of insulation between two commutator bars. grounding of two or more turns of the same coil. failure of insulation between two turns of coil. any of above. failure of insulation between two commutator bars. grounding of two or more turns of the same coil. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Under commutation results in sparking at the leading edge of the brush. sparking the trailing edge of the brush. sparking at the middle of the brush. no sparking. sparking at the leading edge of the brush. sparking the trailing edge of the brush. sparking at the middle of the brush. no sparking. ANSWER DOWNLOAD EXAMIANS APP
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