Electrical Engineering MCQs

Page No. 205

Lead-acid cell has a life of nearly charges and discharges______________?


a500


b700


c1000


d1250


View Answer 1250

Over charging______________?


aproduces excessive gassing


b loosens the active material


cincreases the temperature resulting in buckling of plates


dall above


View Answer all above

The open circuit voltage of any storage cell depends wholly upon___________?


aits chemical constituents


bon the strength of its electrolyte


cits temperature


dall above


View Answer all above

Electrolyte used in a lead-acid cell is__________?


aNaOH


bonlyH2S04


conly water


ddilute H2SO4


View Answer dilute H2SO4

When the specific gravity of the electrolyte of a lead-acid cell is reduced to 1.1 to 1.15 the cell is in___________?


acharged state


bdischarged state


cboth (A) and (B)


dactive state


View Answer discharged state

Negative plate of an Edison cell is made of__________?


acopper


b lead


ciron


dsilver oxide


View Answer iron

The specific gravity of electrolyte is measured by____________?


amanometer


ba mechanical gauge


chydrometer


dpsychrometer


View Answer hydrometer

The internal resistance of a lead-acid cell is that of Edison cell____________?


aless than


bmore than


cequal to


dnone of the above


View Answer less than

Electrolyte used in an Edison cell is___________?


aNaOH


bKOH


cHC1


d HN03


View Answer KOH

Life of the Edison cell is at least_____________?


afive years


bseven years


ceight year


dten years


View Answer five years

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