A 20-pole alternator is having 180 identical stator slots with 6 conductors in each slot. All the coils of a phase are in series. If the coils are connected to realize single-phase winding, the generator voltage is V 1 . If the coils are reconnected to realize three-phase star-connected winding, the generated phase voltage is V 2 . Assuming full pitch, single-layer winding, the ratio V 1 /V 2 is

GATE Electrical Engineering (EE) 2014 Shift 2 Solved Paper

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A 20-pole alternator is having 180 identical stator slots with 6 conductors in each slot. All the coils of a phase are in series. If the coils are connected to realize single-phase winding, the generator voltage is V₁. If the coils are reconnected to realize three-phase star-connected winding, the generated phase voltage is V₂. Assuming full pitch, single-layer winding, the ratio V₁/V₂ is

$\;{1}/{{√{3}}}$
$\;{1}/{2}$
${√{3}}$
2

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