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MCQs 1: Internal resistance of a cell is due to___________?

resistance of electrolyte electrode resistance surface contact resistance between electrode and electrolyte all above
Answer Explanation

MCQs 2: If a lead-acid cell is discharged below 1.8 V the following will happen.____________?

Capacity of cell will reduce Sulphation of plates will occur Internal resistance will increase All above will occur
Answer Explanation

MCQs 3: In a lead-acid cell, if the specific gravity of sulphuric acid is 1.8, it will require following ratio of acid to water to get mixture of specific gravity of 1.3

6 parts of acid to 4 parts of water 4 parts of acid to 4 parts of water 4 parts of acid to 6 parts of water 4 parts of acid to 8 parts of water
Answer Explanation

MCQs 4: Cell short circuit results in_________?

low sp. gravity electrolyte abnormal high temperature reduced gassing on charge all above
Answer Explanation

MCQs 5: Capacity of dry cells is_________?

more when it is supplying current for intermittent periods more when it is supplying current for continuous periods unaffected by the type of discharge none of the above
Answer Explanation

MCQs 6: Local action in a battery is indicated by____________?

excessive gassing under load conditions excessive drop in the specific gravity of electrolyte even when the cell is on open circuit both A. and (b) none of the above
Answer Explanation

MCQs 7: Sulphated cells are indicated by____________?

the loss of capacity of the cell the decrease of the specific gravity the low voltage of the cell on discharge all above conditions
Answer Explanation

MCQs 8: Internal resistance of a cell is reduced by__________?

using vent plug to permit gas formed during discharge increasing the plate area putting plates very close together all above methods
Answer Explanation

MCQs 9: Battery container should be acid resistance, therefore it is made up of___________?

glass plastic wood all above
Answer Explanation

MCQs 10: Following will happen if battery charging rate is too high______________?

excessive gassing will occur temperature rise will occur bulging and buckling of plates will occur all above will occur
Answer Explanation

MCQs 11: During discharge, the active material of both the positive and negative plates is changed to___________?

Pb Pb02 PbO PbS04
Answer Explanation

MCQs 12: Persons preparing electrolyte should wear___________?

goggles or other face shield rubber rubber boots and gloves all above safety devices
Answer Explanation

MCQs 13: The current flow through electrolyte is due to the movement of____________?

ions holes electrons none of the above
Answer Explanation

MCQs 14: If a battery is wrongly connected on charge following will happen__________?

current delivered by the battery will be high current drawing will be nil current drawing will be very small current drawing will be very high
Answer Explanation

MCQs 15: Life of the batteries is in the following ascending order____________?

Lead-acid cell, Edison cell, Nickel cadmium cell Lead-acid cell, Nickel-cadmium cell, Edison cell Edison cell, Nickel-cadmium cell, lead-acid cell Nickel-cadmium cell, Edison cell, lead-acid cell
Answer Explanation

MCQs 16: Shelf life of a small dry cell is___________?

equal to that of large dry cell less than that of large dry cell more than that of large dry cell none of the above
Answer Explanation

MCQs 17: Level of electrolyte in a cell should be ________ the level of plates

below equal to above none of the above
Answer Explanation

MCQs 18: ______ of electrolyte indicates the state of charge of the battery

colour mass viscosity specific gravity
Answer Explanation

MCQs 19: Battery charging equipment is generally installed______________?

in well ventilated location in clean and dry place as near as practical to the battery being charged in location having all above features
Answer Explanation

MCQs 20: 48 ampere-hour capacity would deliver a current of___________?

48 amperes for 1 hour 24 amperes for 2 hours 8 amperes for 6 hours 6 amperes for 8 hours
Answer Explanation

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