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【多选题】
一台三相八极异步电动机的电网频率50Hz,空载运行时转速为727.5转/分,此时()。A.
转差率为0.03
B.
转差率为0.02
C.
转子电势的频率为2Hz
D.
转子电势的频率为1.5Hz
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皮皮学刷刷变学霸
举一反三
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【单选题】If rent controls are set at Rent1:
A.
the shortage of rental units is the distance Q3 – Q1.
B.
some renters would be willing to pay a price as high as Rent4 for Q1 units.
C.
no one would have to pay a higher actual price than Rent0, nor would anyone be willing to do so.
D.
there would be a surplus of rental units, but it is impossible to tell how large the surplus is, based on the information provided.
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