Electrolysis and storage of batteries Archives - MCQ and Quiz for Exams

1. Capacity of a battery.is expressed in

Ah

Vh

Wh

kWh

Detailed SolutionCapacity of a battery.is expressed in

2. When a lead-acid battery is in fully charged condition, the color of its positive plate is

dark grey

brown

dark brown

none of above

Detailed SolutionWhen a lead-acid battery is in fully charged condition, the color of its positive plate is

3. Batteries are charged by

rectifiers

engine generator sets

motor generator sets

any one of the above methods

Detailed SolutionBatteries are charged by

4. Battery container should be acid resistance, therefore it is made up of

glass

plastic

wood

all above

Detailed SolutionBattery container should be acid resistance, therefore it is made up of

5. 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

Detailed SolutionIf a battery is wrongly connected on charge following will happen

6. When the lead-acid cell is fully charged, the electrolyte assumes _____ appearance

dull

reddish

bright

milky

Detailed SolutionWhen the lead-acid cell is fully charged, the electrolyte assumes _____ appearance

7. Mercury cell has which of the following characteristics?

Flat discharge current-voltage curve

High power to weight ratio

Comparatively longer shelf life under adverse conditions of high temperature and humidity

All of the above

Detailed SolutionMercury cell has which of the following characteristics?

8. 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

Detailed SolutionLife of the batteries is in the following ascending order.

9. In order that a hydrometer may float vertically in electrolyte its C.G. should be

lowered

raised

undisturbed

displaced sideways

Detailed SolutionIn order that a hydrometer may float vertically in electrolyte its C.G. should be

10. Over charging

produces excessive gassing

loosens the active material

increases the temperature resulting in buckling of plates

all above

Detailed SolutionOver charging

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