A 315V, 3-phase 400 MVA alternator is running at no load at constant excitations. The most appropriate representation in space domain is?

• A. <a href="https://www.sanfoundry.com/wp-content/uploads/2016/05/operating-1a.png"><img alt="A 315V, 3-phase 400 MVA alternator is running at no load at constant excitation - option a" class="alignnone size-full wp-image-124421" height="282" src="https://www.sanfoundry.com/wp-content/uploads/2016/05/operating-1a.png" width="90"/></a>
• B. <a href="https://www.sanfoundry.com/wp-content/uploads/2016/05/operating-1b.png"><img alt="A 315V, 3-phase 400 MVA alternator is running at no load at constant excitation - option b" class="alignnone size-full wp-image-124422" height="253" src="https://www.sanfoundry.com/wp-content/uploads/2016/05/operating-1b.png" width="120"/></a>
• C. <a href="https://www.sanfoundry.com/wp-content/uploads/2016/05/operating-1c.png"><img alt="A 315V, 3-phase 400 MVA alternator is running at no load at constant excitation - option c" class="alignnone size-full wp-image-124423" height="269" src="https://www.sanfoundry.com/wp-content/uploads/2016/05/operating-1c.png" width="83"/></a>
• D. <a href="https://www.sanfoundry.com/wp-content/uploads/2016/05/operating-1d.png"><img alt="A 315V, 3-phase 400 MVA alternator is running at no load at constant excitation - option d" class="alignnone size-full wp-image-124424" height="258" src="https://www.sanfoundry.com/wp-content/uploads/2016/05/operating-1d.png" width="50"/></a>