题目内容
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[主观题]
某电能表常数为450r/(kWh),负载加热圈为2kW,计量倍率为50/15,该表表盘10min应转几转?若实际测得转数为14r,求表计实际误差为多少?
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A.200kWh
B.3kWh
C.12000kWh
D.600kWh
A.200kWh
B.120kWh
C.12000kWh
D.600kWh
A.6
B.9
C.18
D.27
A.40%
B.60%
C.66.70%
D.100%
A.36
B.72
C.54
D.81