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50/5,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.60kWh
C.12000kWh
D.600kWh
A.6
B.9
C.18
D.27
A.0.45kWh
B.2.7kWh
C.27kWh
D.30kWh
A.40%
B.60%
C.66.70%
D.100%
A.-66.7
B.0.667
C.0.317
D.-31.7
A.36
B.54
C.72
D.81