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-2


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11. The life of a lead acid battery is expected to be

A) six month
B) one year
C) two to five years
D) ten to fifteen years.

Ans : (C)

Question 12 and 13 refer to the following data : A secondary battery having a 20 hour charge rate of 10 amperes delivers 5A for 36 hours on discharge with a mean terminal voltage of 1.96 V. The terminal voltage charging is 2.35 V. 12.Ampere-hour efficiency of the battery is

A) 60 %
B) 70 %
C) 80 %
D) 90 %.

Ans : (D)

13. Watt hour efficiency of the battery is

A) 66 %
B) 70 %
C) 75 %
D) 80 %.

Ans : (C)

14. In an Edison cell, the electrolyte used is

A) Hydrochloric acid
B) Potassium hydroxide
C) Ammonium sulphate
D) Sodium chloride.

Ans : (B)

15. On ampere hour basis the efficiency of a lead acid battery is in the range

A) 60 to 65 percent
B) 80 to 85 percent
C) 70 to 75 percent
D) 90 to 95 percent.

Ans : (D)

16. Two cells are connected in series to from a battery. Their internal resistance is 0.1 Ω. The internal resistance of the battery will be

A) 0.05 Ω
B) 0.1 Ω
C) 0.2 Ω
D) 0.4 Ω.

Ans : (C)

17. During charging, the electrolyte of a lead acid battery becomes

A) weaker
B) stronger
C) diluted with water
D) there is no change in electrolyte.

Ans : (B)

18. Which of the following statements is correct?

A) In a voltaic cell, the anode and cathode are carbon and zinc rod respectively
B) Leclanche cell suffers from local action and polarization
C) Dry cell is basically a beclanche cell
D) Edison alkali cell is a primary cell.

Ans : (C)

19. Which cell has the reversible chemical reaction?

A) Silver oxide
B) Carbon zinc
C) Mercury oxide
D) Lead acid.

Ans : (D)

20. A floating battery is one

A) In which battery voltage is equal to charger voltage
B) In which the current in the circuit is fully supplied by the battery
C) Which gets charged and discharged simultaneously
D) Which supplies current intermittently and also during off cycle gets charged.

Ans : (D)


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