继电保护工计算题 - 百度文库

V2ܿɿֹú͵ͨ

18(La3D5018)

ͼʾϵͳеk㷢Զ·ñôֵ̬

𣺴̬Ϊ0.368kA

19(La2D1019)

һȦҽ50Hz220VԴϣΪ5Aֱ220VԴʱΪ10AȦ? ⣺

ȦΪ121.6mH

20(La2D2020)

һƵͨM˷ŹΪ10WNŹΪ9.8WԼͨ˥ġ ⣺⣺ͨ˥Ϊ

ͨ˥Ϊ0.01Np

21(La2D3021)

ij뱣ֵΪZI=0.9phZ=3phIлʽ迹̵翹ѹI)KBijͷֱΪ0.2ph1phѡõ翹ѹDKBijͷѹȣ粻ҪӦô? ⣺

22(La2D3022)

һ಻ԳUA=58VUB=33-150VUB=33+150VԼ为ѹ ⣺

𣺸ѹΪ19.3V

23(La2D3023)

ڴӵصϵͳУѹԳƣBCԶ·ӵʱB·Ϊ800ej45AC·Ϊ850ej165AӵصǶ? ⣺

𣺽ӵصΪ826.25ej108A

24(La2D4024)

ʽʱ·ͼʾEc=18VUV=10VC=47FҪʹõ·ʱ1sR2ֵ

R2Ϊ26k

25(La2D4025)

ͼʾ·У̵ĵr=250L=25H(ʱֵ)E=24VRl=230֪˼̵ķصΪ4mA,ʿKϺ󾭹೤ʱ̵ܷ?

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