Electrical Engineering MCQs

Page No. 203

Level of electrolyte in a cell should be ________ the level of plates


abelow

✖


bequal to

✖


cabove

✓


dnone of the above

✖


View Answer above

______ of electrolyte indicates the state of charge of the battery


acolour

✖


bMass

✖


cviscosity

✖


dspecific gravity

✓


View Answer specific gravity

Battery charging equipment is generally installed______________?


ain well ventilated location

✖


b in clean and dry place

✖


cas near as practical to the battery being charged

✖


din location having all above features

✓



48 ampere-hour capacity would deliver a current of___________?


a48 amperes for 1 hour

✖


b24 amperes for 2 hours

✖


c8 amperes for 6 hours

✖


d6 amperes for 8 hours

✓


View Answer 6 amperes for 8 hours

Batteries are charged by_____________?


arectifiers

✖


bengine generator sets

✖


cmotor generator sets

✖


dany one of the above methods

✓



In constant-current charging method, the supply voltage from discharged to fully charged condition____________?


a decreases

✖


b increases

✓


cremains constant

✖


dnone of the above

✖


View Answer increases

Following will happen if the specific gravity of electrolyte becomes more than 1.23


aLoss of capacity

✖


bLoss of life

✖


cCorrosion of the grids of the plate

✖


d All above

✓


View Answer All above

Following will occur if level of electrolyte falls below plates____________?


acapacity of the cell is reduced

✖


blife of the cell is reduced

✖


copen plates are converted to lead sulphate

✖


dall above

✓


View Answer all above

On overcharging a battery____________?


ait will bring about chemical change in active materials

✖


bit will increase the capacity of the battery

✖


cit will raise the specific gravity of the electrolyte

✖


dnone of the above will occur

✓



In constant voltage charging method, the charging current from discharged to fully charged condition_____________?


a decreases

✓


bincreases

✖


cremains constant

✖


dnone of the above

✖


View Answer decreases

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