THEORY OF STRUCTURES QUIZ

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

milky

reddish

bright

dull

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In alkaline cell the electrolyte is

concentrated sulphuric acid

dilute sulphuric acid

kOH

NaOH

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Five 2 V cells are connected in parallel. The output voltage is

1.5 V

2 V

10 V

15 V

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The specific gravity of electrolyte is measured by

a mechanical gauge

psychrometer

manometer

hydrometer

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In a lead-acid cell dilute sulfuric acid (electrolyte) approximately comprises the following

all H₂SO₄

three parts H2O, one part H₂SO₄

two parts H2O, two parts H₂SO₄

one part H2O, three parts H₂SO₄

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Over charging

loosens the active material

increases the temperature resulting in buckling of plates

all of the listed here

produces excessive gassing

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The active material of the positive plates of silver-zinc batteries is

silver oxide

lead

lead oxide

zinc powder

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A constant-voltage generator has

minimum current capacity

minimum efficiency

low internal resistance

high internal resistance

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Following will occur if level of electrolyte falls below plates

capacity of the cell is reduced

all of these

life of the cell is reduced

open plates are converted to lead sulphate

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All the electrical connections between the battery and vehicle should be by

thin aluminium wires

flexible cables

rigid cables

thin copper wires

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