设计在∫<sub>1</sub>=50Hz电源上运行的三相感应电动机现改为在电压相同频率为60Hz的电网上,其电动机的()。
A、Tst减小,Tmax减小,Ist增大
B、Tst减小,Tmax增大,Ist增加
C、Tst减小,Tmax减小,Ist增加
D、Tst增大,Tmax增大,Ist增大
A、Tst减小,Tmax减小,Ist增大
B、Tst减小,Tmax增大,Ist增加
C、Tst减小,Tmax减小,Ist增加
D、Tst增大,Tmax增大,Ist增大
A、H<sub>1sub>成立,拒绝H<sub>0sub> B、H<sub>0sub>成立,拒绝H<sub>0sub> C、H<sub>1sub>成立,拒绝H<sub>1sub> D、H<sub>0sub>成立,拒绝H<sub>1sub>
A、△H<sub>1sub>〈△H<sub>2sub>,W<sub>1sub>〉W<sub>2sub> B、△H<sub>1sub>〉△H<sub>2sub>,W<sub>1sub>〈W<sub>2sub> C、△H<sub>1sub>〈△H<sub>2sub>,W<sub>1sub>〈W<sub>2sub> D、△H<sub>1sub>〉△H<sub>2sub>,W<sub>1sub>〉W<sub>2sub>
A、△H<sub>1sub>〉△H<sub>2sub>,W<sub>1sub>〈W<sub>2sub> B、△H<sub>1sub>〈△H<sub>2sub>,W<sub>1sub>〉W<sub>2sub> C、△H<sub>1sub>=△H<sub>2sub>,W<sub>1sub>〈W<sub>2sub> D、△H<sub>1sub>=△H<sub>2sub>,W<sub>1sub>〉W<sub>2sub>
A、△H<sub>1sub>+ △H<sub>2sub>+△H<sub>3sub> =△H<sub>4sub> B、△H<sub>1sub>+ △H<sub>2sub> = △H<sub>3sub> +△H<sub>4sub> C、(△H<sub>1sub>+ △H<sub>2sub>)-(△H<sub>3sub> +△H<sub>4sub>)=△H<sub>5sub> D、△H<sub>1sub>+△H<sub>2sub>+△H<sub>3sub>+△H<sub>4sub> =△H<sub>5sub>
A、Ф50H7/f<sub>6sub>和Ф50F7/h<sub>6sub> B、Ф50P7/h<sub>6sub>和Ф50H8/p<sub>7sub> C、Ф50M8/h<sub>7sub>和Ф50H8/m<sub>8sub> D、Ф50H8/h<sub>7sub>和Ф50H7/f<sub>6sub>
A、H<sub>1sub>>H<sub>2sub>;P<sub>1sub>=P<sub>2sub> B、H<sub>1sub>=H<sub>2sub>;P<sub>1sub>>P<sub>2sub> C、H<sub>1sub>>H<sub>2sub>;P<sub>1sub>>P<sub>2sub> D、H<sub>1sub>=H<sub>2sub>;P<sub>1sub>=P<sub>2sub>
A、W10;H<sub>3sub>=W10;H<sub>1sub>+W10;H<sub>2sub> B、W10;H<sub>3sub>=W10;H<sub>1sub>-W10;H<sub>2sub> C、W10;H<sub>3sub>=W10;H<sub>2sub>-W10;H<sub>1sub> D、W10;H<sub>3sub>=2W10;H<sub>1sub>-W10;H<sub>2sub>
A、ΔU<sub>1sub>>ΔU<sub>2sub>ΔH<sub>1sub><ΔH<sub>2sub> B、ΔU<sub>1sub><ΔU<sub>2sub>H<sub>1sub><ΔH<sub>2sub> C、ΔU<sub>1sub>>ΔU<sub>2sub>ΔH<sub>1sub>>ΔH<sub>2sub> D、ΔU<sub>1sub><ΔU<sub>2sub>H<sub>1sub>>ΔH<sub>2sub>
A、H<sub>1sub>〉H<sub>2sub> B、H<sub>1sub>=H<sub>2sub> C、H<sub>1sub>〈H<sub>2sub> D、H<sub>1sub>≥H<sub>2sub>
A、H<sub>1sub>>H<sub>2sub> B、H<sub>1sub>=H<sub>2sub> C、H<sub>1sub><H<sub>2sub> D、H<sub>1sub>>=H<sub>2sub>