A . 60s
B . 45s
C . 30s
D . 15s
[单选题]吸收比,是兆欧表在额定转速下,60s的绝缘电阻读数和()的绝缘电阻读数之比A . 60sB . 45sC . 30sD . 15s
[判断题]将用绝缘电阻表测量的60s时的绝缘电阻与15s时的绝缘电阻相比,称为极化指数。()A.对B.错
[判断题]将用绝缘电阻表测量的60s时的绝缘电阻与15s时的绝缘电阻相比,称为极化指数。()A.对B.错
[单选题]绝缘极化指数的测量是采用读数为()和60s的绝缘电阻的比值。A . 120sB . 300sC . 360sD . 600s
[单选题]将用绝缘电阻表测量的()时的绝缘电阻与15s时的绝缘电阻相比,称为绝缘吸收比.A.25sB.35sC.60s
[单选题]将用绝缘电阻表测量的()时的绝缘电阻与15s时的绝缘电阻相比,称为绝缘吸收比.A.25sB.35sC.60s
[单选题]将用绝缘电阻表测量的( )时的绝缘电阻与15s时的绝缘电阻相比,称为绝缘吸收比.A.25sB.35sC.60s
[单选题]测量吸收比时,应分别读取绝缘电阻表15s和()时的绝缘电阻值。A.5sB.20sC.60s
[单选题]测量吸收比时,应分别读取绝缘电阻表15s和()时的绝缘电阻值。A.5sB.20sC.60s
[单选题]测量吸收比时,应分别读取绝缘电阻表15s和( )时的绝缘电阻值。A.5sB.20sC.60s