电力线路工高级技师题库

UIcos。一。。。Aa6f提2。。为2AA16．已知L=50mH，通过电流的瞬时功率的表达式。。正24。26V。。。。。红绿A与a，X与x。位。。。。。V。。。2大。kV和52两。理。。。。。8。四。专。五V。电。BBS用H。，。。。。大。。BH两m。。。。。4M。。压。。。°。(ABDCABBCBAChhhhAB)(ADhhhhCBCDCDDDBAAB(CCC)AAAAAhhhh(CCBDDBBAC与10Ammmm与Dmmmm与Ammmm(Dmmmm(Ammmm(Ammmm51．10与(Ammmm与CmmmmkV与AmmmmDmmmmAmmmAmCCDDAABCAmmmCACSSCCCCCmDmmmmAmmmmAmmmmAmmmDABAABmmmmB个个个个BC2D2BDAA或BCBBC(ACADCDAAADBA2C2C2D2CmmmmDmmmmD222222222222DDDDBBmmmBmmmmDmmmDCBDmmmDmmmBmmmADDDABmmmA22222222BBmmmmCB倍倍BCCCCDDB倍CBD倍倍倍DC(ACBDBDACADDBCiUBLL7ADDDCssssXfXD倍倍倍倍BCACBCCB倍倍倍倍BACAm(×)(√)(×)(×)(√)1(×)(√)(√)(×)(√)(×)(×)(√)(√)(√)(×)(√)(√)(√)(√)√)(×)(√)(√)(×)(×)×)(√)(×)(√)(×)(√)(×)(√)(×)(×)(√)(√)(√)2(√)(×)(×)(√)(×)(√)(×(√)(×))(×)(√)(×)(×)1(×)(×)(×)(×)(√)V(√)(×)(√)(×)(√)(√)(√)(√)(×)(√)(√)(√)(√)(√)(√)(√)(√)(√)(√)(√)(√)(√)(√)(√)(√)(×)(×)(√)(√)(×)(×)(√)(√)(√)(√)(×)(×)(√)(√)(×)(√)(√)11(√)2m(×)(√)(√)(√)(×)(×)2(×)(√)(√)(√)(√)(×)A(×)V(√)V(√)(√)m(√)(√)(√)(√)√)(√)(√)V(×)(×)(√)(√)(×)(×)(√)(×)(√)(√)(×)(√)(√)(√)3(√)(√)(√)×)(√)(×)(√)(√)(√)(√)(√)(×)(√)(√)A(√)Y(√)(√)(√)(√)(×)(√)(×)(√)A(×)(√)(×)(×)(√)(×)(√)(×)m(√)(√)A(√)A(√)答：(1)直埋电缆敷设。(2)架空电缆敷设。(3)生产厂房内及沟道内电缆的敷设。(4)小于1m4m1h时。Y6m0V1vMmml=θ121f[al（tantan]x1）2421[19.27tan3tan3]241[19.270.06350.05591]249.015）2.5f01009.0306）0为N为L取2216l124（cosffL22dcoslccocc825023260465.513000.273）22为f为l为88L（ff12.811.40.323）2222l3280xR00P8000.8cossinPQ8006002222Q6008006000.6PQ2222P30.857.8A）IUcosU3RcosXsin3IRlcosXlsin）（00357.80.29100.80.35100.62）22rX0000（）0.5UU0.95S0.45S1.02（）0.53333ρ=31.52L（5020]31.51/24065020]0.145RS2数TP1036）217.762.5a2d2162A3.14201mm2.01cm）2222AT2.0156002.62.5KbF43002T19417P5）A79.3P244.852.597.94）（