Index

SymbolsTransformerRelayPower-SystemBasic-electricalACSR-ConductorCircuit-BreakerInterview-questions-of-Basic-ElectricityInterview-questions-of-transformerInsulatorCurrent-TransformerMCQMCQ-powersystemThermal-power-stationInterview-questions-of-Power-SystemPower-ElectronicsInterview-questions-of-Underground-CableInterview-questions-of-IlluminationIlluminationMCQ-of-ElectronicsMCQ-of-Basic-ElectricalMCQ-of-Transformers MCQ-of-D.C-motor MCQ-of-D.C-generatorsMCQ-Control-SystemMCQ-Measurementsmcq-of-Generation-power-systemMCQ-of-Induction-MotorMCQ-of-Transmission-DistributionMCQ-of-Electrical-MachinesMCQ-of-Alternator-and-Synchronous-MotorsMCQ-Electric-PowerMCQ-Illumination

Multiple Choice Question (MCQ) of battery page-3


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21. The active materials on the positive and negative plates of a fully charged lead acid battery are

A) Lead sulphate and lead oxide
B) Lead peroxide and pure lead
C) Lead peroxide and lead sulphate
D) Pure lead and lead oxide.

Ans : (B)

22. In a lead accumulator, the plates are placed close to each other, as :

A) it increases the life span of the accumulator
B) it decreases the internal resistance of the accumulator
C) it increases the e.m.f. of the accumulator
D) it makes the lead accumulator sturdy

Ans : (B)

23. For a discharged lead acid battery, the specific gravity of the acid is

A) 0.9
B) 1.0
C) 1.12
D) 1.3.

Ans : (C)

24. The electrode for a battery must be

A) a semi-conductor
B) a bad conductor of electricity
C) a good conductor of electricity
D) an insulator.

Ans : (C)

25. The electrolyte in a Leclanche cell is

A) lead stearate
B) pyrogallic acid
C) aqueous solution of ammonium chloride
D) dilute hydrochloric acid.

Ans : (C)

26. The energy in a lead acid battery is stored in the form of

A) nuclear energy
B) chemical energy
C) non-flowing current
D) electrostatic charge.

Ans : (B)

27. The electrochemical reactions are not reversible in case of

A) primary cells only
B) secondary cells
C) both primary and secondary cells.

Ans : (A)

28. When water is added to sulphuric acid

A) acid particles get separated
B) water starts boiling
C) lot of heat is generated
D) colour of acid changes.

Ans : (C)

29.One ampere hour charge is equivalent to

A) 36 coulombs
B) 360 coulombs
C) 3600 coulombs
D) 36000 coulombs.

Ans : (C)

30. Our a group of cells when internal resistance of the group is equal to the external resistance due to load, the battery will give

A) maximum ampere-hours
B) maximum current
C) maximum energy
D) maximum voltage.

Ans : (B)


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