Q.

Which of the following statements about electric precipitators is false?

A. they are used to remove dust by providing a strong electric field
B. their initial installation cost is high
C. their operational cost is low
D. dust particles get attached to the positive electrode
Answer» D. dust particles get attached to the positive electrode
Explanation: electric precipitators are used to remove dust by providing a strong electric field. in an electric precipitator, the dust particles get attached to the negative
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