大学实验答案常考问题.doc

1. 2. I0(3-1-5)T03. 2 1. ?Db2D/b2. ?3. ? 1. ?2. 3. ?(1) TT+T Q =cimiT J(2) J TT-TJ=A/JT+TJ(3) 00+0-dTi=k(Ti-)k(k)dTi=kTi- (0+)dTitTi=kTi- (0+)Ti=Tf+ TfTfTf= Tf-TiTiTiTf=Tf+TiTfTTTf- TfTfJ J(1) ?(2) ?(3) IgI RgRx Rx0 RxRg 1. (2) CH1CH2(3) Y120Hz360Hz(4) 1. ? ?2. Rx=(R1/R2)R33. Rx ()?RxACCD 3. ?(1) (2) (3) (4) (5) 12345 4. 1.2k?6VR1R210001.5A 1. 3-10-4abG? EEx RABESEx2. 3106EExRcRxRL1L2KxExr=(L1-L2)/L2Rx(Rx)ARVxK2Ex=AL1 (1)Vx=AL2 (2)2:Rx/(r+Rx)Ex=AL2 (3)(1)(3)r =(L1-L2)/L2Rx 3. 3-10-7(a)ARxR0(b)UJ37Rx? A?Rx R0R0Rx 1Ex (+)2Ex (-)Vx(Rx) 2Ex (+)3Ex (-)V0(R0) RxR0Rx=(Vx/V0)R0 3Ex(-)2Ex(+),R0AR0V1I1(I1=V1/R0) I2, I3, 4. 3-10-4AB11ma=0.1V/m11m1.1V3-10-83-10-811mABR1R2ABr, R1R2r1.1VAB(11m)a=0.1mV/mR1+R2? E01.0186VR1(r)? aABVAB=11a1.1mVI =VAB/rI(R1+R2+r)=1.1V(VAB/r)(R1+R2+r)=1. 1VVAB (R1+R2)/r +1= 1.1VR1+R2=(1.1/VAB)-1 r =(1.1/0.0011-1)r999r R2I = E0 R1R1= R1minR1I + E0 + Ir = 1.1I =VAB/r =0.0011/rR1min=(1.1-E0-Ir)/I=73rR2I+Ir =E0 R1R1= R1maxR1I + E0 = 1.1R1max =(1.1-E0)/I=74r 1. ? GNDGND VOLTS/DIV 2. Y1(CH1)Y? ?23. 1. ? 2. M13-14-4? 3. M1G1M2M2? 1. ?Leuv2. fuB(L)uB(e)uA(e)?uA(L)LO1O23. ff0EE?E4. uvu+vu?v(3-15-1)f?ff=1/k1/f=1/u+1/v f=1/k5. uvv/u()v?f ?f1. ? 2. ()?3. ?1. (=589.0nm)1mm500?(a+b)sin=k k=(a+b)/sin90o sin=1a+b=1/500mm=2*10-6m =589.0nm=589.0*10-9mk=2*10-6/589.0*10