electrical

Electrolysis and Storage Batteries MCQ With Answers Page - 4

1.

Under normal charging rate, the charging current should be

Answer/ Hint      

Answer : A

Explanation :

2.

A generator has an open-circuit e.m.f of 180 V. its terminal voltage drops to 150 V with a load resistance of 10 kΩ. What is the internal resistance?

Answer/ Hint      

Answer : B

Explanation :

3.

When two batteries are connected in parallel, it should be ensure that

Answer/ Hint      

Answer : A

Explanation :

4.

A typical output of solar cell is

Answer/ Hint      

Answer : B

Explanation :

5.

Petroleum jelly is applied to the electrical connections the lead-acid battery to

Answer/ Hint      

Answer : D

Explanation :

6.

When the load resistance equals the generator resistance which of the following will be maximum?

Answer/ Hint      

Answer : C

Explanation :

7.

The common impurity in the electrolyte of a lead-acid battery is

Answer/ Hint      

Answer : D

Explanation :

8.

What is the reasonable value of the current that can be continuously drawn from a 120 ampere-hour capacity lead-acid cell?

Answer/ Hint      

Answer : C

Explanation :

9.

In a lead acid battery, the energy is stored in the form of

Answer/ Hint      

Answer : B

Explanation :

10.

Which among the following constitute the major load of an automobile battery?

Answer/ Hint      

Answer : B

Explanation :

11.

Which of the following factor adversely affects the capacity of the lead acid battery?

Answer/ Hint      

Answer : D

Explanation :

12.

Cells are connected in parallel to

Answer/ Hint      

Answer : B

Explanation :

13.

The current in a chemical cell is movement of

Answer/ Hint      

Answer : B

Explanation :

14.

A constant-voltage generator has

Answer/ Hint      

Answer : C

Explanation :

15.

Which secondary cell has the highest voltage output?

Answer/ Hint      

Answer : B

Explanation :

16.

Satellite power requirement is provided through

Answer/ Hint      

Answer : A

Explanation :

17.

If a battery is to be charged at a much higher rate as compared to normal charging rate, the charging should be restricted one

Answer/ Hint      

Answer : B

Explanation :

18.

For preparing electrolyte for lead acid battery, acid is poured into water to

Answer/ Hint      

Answer : D

Explanation :

19.

In a lead-acid battery, separators are provided to

Answer/ Hint      

Answer : D

Explanation :

20.

In a lead-acid battery fillers are provided

Answer/ Hint      

Answer : C

Explanation :

21.

In a lead-acid battery during charging

Answer/ Hint      

Answer : A

Explanation :

22.

A floating battery is one

Answer/ Hint      

Answer : B

Explanation :

23.

It is normally specified by the manufactures that a lead-acid battery should not remain discharged for more than

Answer/ Hint      

Answer : B

Explanation :

24.

Three cells are connected in series to from a battery. The internal resistance is 0.1 Ω each. The internal resistance of the battery is

Answer/ Hint      

Answer : C

Explanation :

25.

The life of a lead-acid battery is expected to be

Answer/ Hint      

Answer : C

Explanation :

26.

Tickle charge is required for

Answer/ Hint      

Answer : D

Explanation :

27.

In case of a lead-acid battery a wet battery cover indicates

Answer/ Hint      

Answer : D

Explanation :

28.

The electrolyte in a Leclanche cell is

Answer/ Hint      

Answer : D

Explanation :

29.

A lead-acid battery, even when not in use, should be recharged once in

Answer/ Hint      

Answer : C

Explanation :

30.

Sedimentation in lead-acid batteries occurs due to

Answer/ Hint      

Answer : B

Explanation :

31.

The terminal voltage, when the battery is being charged, decreases with

Answer/ Hint      

Answer : A

Explanation :

32.

Which test is used to ascertain whether the battery plates are defective or not?

Answer/ Hint      

Answer : B

Explanation :

33.

12 V lead-acid battery has an internal resistance of 0.01 Ohm. How much current will flow when the battery is short-circuited?

Answer/ Hint      

Answer : D

Explanation :

34.

Which of the following is a dry storage cell?

Answer/ Hint      

Answer : D

Explanation :

35.

Two batteries having unequal e.m.f.

Answer/ Hint      

Answer : A

Explanation :

36.

Which of the following materials is used in solar cells?

Answer/ Hint      

Answer : B

Explanation :

37.

In a lead-acid cell, hydrogen is liberated at

Answer/ Hint      

Answer : B

Explanation :

38.

Find the odd one out

Answer/ Hint      

Answer : B

Explanation :

39.

The efficiency of a solar cell may be in the range

Answer/ Hint      

Answer : B

Explanation :

40.

A battery is made up of 5 voltage cells in series. Each cell has an open circuit of e.m.f. of 1.6 v and an internal resistance of 0.08Ω. What is the battery terminal voltage for a load of 6 Ω?

Answer/ Hint      

Answer : D

Explanation :

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