1、 2016-2017 ( 80 80 ) ( 3 30 ) 1 2 3 4 5 6 7 8 9 10 1 ( ) A 0 B C D 2 R=U/I ( ) A B C D 3 (3) A 0.01 A B 12 V C 700 W D 1 360 J 3 4 5 4 4 a b A a B a C b D b 5 5 U 1 S U U =1 3 S I I A 3 1 B 1 1 C 1 3 D 4 3 6 A B C D 7 A B C D 8 8 S1 S2 S2 S1 8 9 6V 6W L1 6V 3W L2 6V A B L2 L2 C L1 L1 D L1 L1 10 6V R
2、 10 R0 R0 R0 10 -20 0-3V 0-0.6A S A R0 B C R0 0.5A D R 0.9W 1 10 11 12 13 14 3min 100 W 3200W 40A 15 15 L R 14 s 1w s1 A W 15 16 16 2 17 4 16 N 17 - 15 - 19 ( 26 ) 18 5 18 1 A B 2 3 4.2 10 3 J/ kg 19 7 3V 20 2A 5 10 20 50 1 P A B 2 5 P 13 A 3 5 10 P A B 4 10 20 3 m/kg t/ t/min 1 0.1 10 2 2 0.2 10 4
3、3 0.1 10 1 4 0.2 10 2 5 6 50 20 7 6V 2.5V 50 1 2 3 1.8V L W 20 4 R 2V R R 21 3 F S l Ff S 2 S=4.0m2 Ff v A 1 5 2 10 0.18 3 20 0.09 (1) 1 _ (2) 2 _N (3) _ ( ) 22 4 1 21 8 . 23 1 2 6min 70 2min 2min 1.24x10 3 J/(kg )( 1 ) 3 XX DN-168A 220V 50Hz 5.2kg 1.6L 220W 800W 120 700kP /min 1 2 3 4 5 6 7 8 /kg 2
4、.0 2.0 1.9 1.8 1.7 1.6 1.5 1.5 /W 800 800 220 800 800 220 800 800 . ( 3 30 ) 1 2 3 4 5 6 7 8 9 10 D D C C C D B C B D 1 10 11 12 13 14 1000 15 0.2 1.4 16 2 17 4 16 17 I=U/R P=UI ( 26 ) 18 5 (1)B A 2 3 4.2 10 3 J 19 7 1 A 2 R 0.36 3 B 5 6 20 7 (1) 2 3 A 0.6 4 25 21 3 1 2 927 3 22 4 1 2 3 N 4 N , S 8 1 I=P1/U I=P/U=220W/220V=1A P=UI=U 2 /R R= U 2 /P=(220V) 2 /800W=60.5 2 Q =Cm(t-t0)= 1.24x10 3 J/(kg ) x1.5kg x(120 -70 )=9.3 x10 4 J t=2min=120s P=W/t W=P2t=800W x120s=9.6x10 4 J 2min : = Q /W=9.3 x10 4 J/9.6x10 4 J=96.9% (3) P=UI I=U/R
