隐极同步发电机静态稳定运行极限对应的功角为( )。

A、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/148429697227872c291ecf8784313a86eb53cd0d51295image13.png" style="font-size: 16.8px; background-color: rgb(255, 255, 255);"><span style="font-size: 16.8px; background-color: rgb(255, 255, 255);">&nbsp;</span>

B、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/14842969723341b7c79b7b33f4a34b62fd4054854e7f2image14.png" style="font-size: 16.8px; background-color: rgb(255, 255, 255);">

C、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1484296972382cb13de67fb05421987da7280767ed925image15.png" style="font-size: 16.8px; background-color: rgb(255, 255, 255);">

D、<img src="https://s3.cn-north-1.amazonaws.com.cn/qingshuxuetang/examination/imgUplod/1484297126819c3d155afb42141148af3fccd880cade7.png" alt="上传图片">