Electrolysis And Storage Of Batteries MCQ Questions & Answers

1

Self charge of a Ni-Fe cell is _____ Edison cell.

A) Equal to B) Less than C) More than D) Much more than

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Answer & Solution

Answer: Option B

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2

Excessive formation of lead sulphate on the surface of the plates happens because of

A) allowing a battery to stand in discharged condition for a long time B) topping up with electrolyte C) persistent undercharging D) low level of electrolyte E) all above

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Answer & Solution

Answer: Option E

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3

Life of the Edison cell is at least

A) five years B) seven years C) eight years D) ten years

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Answer & Solution

Answer: Option A

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4

Cell short circuit results in

A) low sp. gravity electrolyte B) abnormal high temperature C) reduced gassing on charge D) all above

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Answer & Solution

Answer: Option D

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5

“The mass of an ion liberated at an electrode is directly proportional to the quantity of electricity”.
The above statement is associated with

A) Newton’s law B) Faraday’s law of electromagnetic C) Faraday’s law of electrolysis D) Gauss’s law

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Answer & Solution

Answer: Option C

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6

A typical output of a solar cell is

A) 0.1 V B) 0.26 V C) 1.1 V D) 2 V

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Answer & Solution

Answer: Option B

Solution:

A typical output voltage of a solar cell, which is also known as the open-circuit voltage (Voc), can vary depending on the type of solar cell and its specific characteristics. However, a commonly encountered voltage for solar cells is around 0.26 V.

This voltage represents the electrical potential generated by the solar cell when it is exposed to sunlight and is not connected to any external load. It's important to note that the voltage of a solar cell can vary based on factors like the type of materials used, the amount of sunlight, and the design of the cell.

The other options do not typically represent the output voltage of a standard solar cell:
Option A: 0.1 V is lower than the usual output voltage of a solar cell.
Option C: 1.1 V is higher than what is typically found in standard solar cells.
Option D: 2 V is also higher than the typical voltage output of most solar cells.

So, the correct answer is Option B: 0.26 V, which aligns with a common output voltage for solar cells

7

The output voltage of a charger is

A) less than the battery voltage B) higher than the battery voltage C) the same as the battery voltage D) none of the above

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Answer & Solution

Answer: Option B

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8

In a battery cover is placed over the element and sealed to the top of the battery container. This is done

A) to reduce evaporation of water from electrolyte B) to exclude dirt and foreign matter from the electrolyte C) to discharge both of the above functions D) to discharge none of the above functions

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Answer & Solution

Answer: Option C

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9

Specific gravity of electrolyte in Edison cell is

A) 0.8 B) 0.95 C) 1.1 D) 1.21

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Answer & Solution

Answer: Option D

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10

Local action in a battery is indicated by

A) excessive gassing under load conditions B) excessive drop in the specific gravity of electrolyte even when the cell is on open circuit C) both (A) and (B) D) none of the above

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Answer & Solution

Answer: Option D

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Electrolysis And Storage Of Batteries MCQ Questions & Answers | Electrical Engineering