Hiệu suất (dễ)

Home Lớp 10 Vật lý 10 - Sách kết nối tri thức Bài 27: Hiệu suấtBài tập cơ bản

{"common":{"save":0,"post_id":"6411","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"6269","mon_id":"1158790","chapter_id":"1158864","post_id":"6411","question":"Trong các \u0111\u1ed9ng c\u01a1 nhi\u1ec7t, n\u0103ng l\u01b0\u1ee3ng hao phí chi\u1ebfm kho\u1ea3ng<\/font>  <\/p>","options":["A<\/strong>. t\u1eeb 60% \u0111\u1ebfn 70%.<\/font>","B<\/strong>. from 60% to 70%.<\/font><\/font><\/font>","C<\/strong>. from 60% to 70%.<\/font><\/font><\/font>","D<\/strong>. from 60% to 70%.<\/font><\/font><\/font>"],"correct":"1","level":"1","hint":"","answer":"Trong các \u0111\u1ed9ng c\u01a1 nhi\u1ec7t, n\u0103ng l\u01b0\u1ee3ng hao phí chi\u1ebfm kho\u1ea3ng t\u1eeb 60% \u0111\u1ebfn 70%. \u0110áp án \u0111úng: A<\/strong>. t\u1eeb 60% \u0111\u1ebfn 70%.<\/span><\/font>  <\/p>","type":"choose","extra_type":"classic","user_id":"149","test":"0","date":"2023-02-11 07:48:09","option_type":"txt","len":2},{"id":"6270","mon_id":"1158790","chapter_id":"1158864","post_id":"6411","question":"Ch\u1ecdn \u0111áp án \u0111úng. Khi qu\u1ea1t \u0111i\u1ec7n ho\u1ea1t \u0111\u1ed9ng thì<\/p>","options":["A<\/strong>. \u0111i\u1ec7n n\u0103ng là n\u0103ng l\u01b0\u1ee3ng có ích.","B.<\/strong> c\u01a1 n\u0103ng c\u1ee7a cánh qu\u1ea1t là n\u0103ng l\u01b0\u1ee3ng toàn ph\u1ea7n.","C<\/strong>. nhi\u1ec7t n\u0103ng t\u1ecfa ra trên cu\u1ed9n dây là n\u0103ng l\u01b0\u1ee3ng hao phí.","D<\/strong>. T\u1ea5t c\u1ea3 \u0111\u1ec1u \u0111úng."],"correct":"3","level":"1","hint":"","answer":"A – sai, \u0111i\u1ec7n n\u0103ng cung c\u1ea5p cho qu\u1ea1t ho\u1ea1t \u0111\u1ed9ng là n\u0103ng l\u01b0\u1ee3ng toàn ph\u1ea7n. B – sai, c\u01a1 n\u0103ng là n\u0103ng l\u01b0\u1ee3ng có ích. C – \u0111úng. \u0110áp án \u0111úng: C<\/strong>. Nhi\u1ec7t n\u0103ng t\u1ecfa ra trên cu\u1ed9n dây là n\u0103ng l\u01b0\u1ee3ng hao phí.<\/span><\/p>","type":"choose","extra_type":"classic","user_id":"149","test":"0","date":"2023-02-11 07:51:10","option_type":"txt","len":3},{"id":"6271","mon_id":"1158790","chapter_id":"1158864","post_id":"6411","question":"\u0110\u1ec3 \u0111ánh giá t\u1ec9 l\u1ec7 gi\u1eefa n\u0103ng l\u01b0\u1ee3ng có ích và n\u0103ng l\u01b0\u1ee3ng toàn ph\u1ea7n, ng\u01b0\u1eddi ta dùng khái ni\u1ec7m gì?<\/p>","options":["A<\/strong>. N\u0103ng su\u1ea5t.","B<\/strong>. Hi\u1ec7u su\u1ea5t.","C<\/strong>. T\u1ea7n su\u1ea5t.","D<\/strong>. \u0110áp án khác."],"correct":"2","level":"1","hint":"","answer":"\u0110\u1ec3 \u0111ánh giá t\u1ec9 l\u1ec7 gi\u1eefa n\u0103ng l\u01b0\u1ee3ng có ích và n\u0103ng l\u01b0\u1ee3ng toàn ph\u1ea7n, ng\u01b0\u1eddi ta dùng khái ni\u1ec7m hi\u1ec7u su\u1ea5t. \u0110áp án \u0111úng: B<\/strong>. Hi\u1ec7u su\u1ea5t.<\/span><\/p>","type":"choose","extra_type":"classic","user_id":"149","test":"0","date":"2023-02-11 07:53:04","option_type":"txt","len":2}]}