1. "The mass of an ion liberated at an electrode is directly proportional to the quantity of electricity".The above statement is associated with ______.
2. The charge required to liberate one gram equivalent of any substance is known as ______ constant
3. During the charging of a lead-acid cell
4. The capacity of a lead-acid cell does not depend on its _____.
5. During charging the specific gravity of the electrolyte of a lead-acid battery
6. The active materials on the positive and negative plates of a fully charged lead-acid battery are
7. When a lead-acid battery is in fully charged condition, the colour of its positive plate is
8. The active materials of a nickel-iron battery are
9. The ratio of ampere-hour efficiency to watt-hour efficiency of a lead-acid cell is
10. The best indication about the state of charge on a lead-acid battery is given by
11. The storage battery generally used in electric power station is
12. The output voltage of a charger is
13. Cells are connected in series in order to
14. Five 2 V cells are connected in parallel.The output voltage is
15. The capacity of a battery is expressed in terms of
16. Duringthe charging and discharging of a nickel-iron cell
17. As compared to constant-current system, the constant-voltage system of charging a lead acid cell has the advantage of
18. A dead storage battery can be revived by
19. As compared to a lead-acid cell, the efficiency of a nickel-iron cell is less due to its
20. Trickle charging of a storage battery helps to
21. Those substances of the cell which take active part in chemical combination and hence produce electricity during charging or discharging are known as______materials.
22. In a lead-acid cell dilute sulphuric acid (electrolyte) approximately comprises the following
23. It is noticed that durmg charging
24. It is noticed that during discharging the following does not happen
25. The ampere-hour efficiency of a leadacid cell is normally between
26. The watt-hour efficiency of a lead-acid cell varies between
27. The capacity of a lead-acid cell is measured in
28. The capacity of a lead-acid cell depends on
29. When the lead-acid cell is fully charged, the electrolyte assumes _____ appearance
30. The e.m.f. of an Edison cell, when fully charged, is nearly
31. The internal resistance of an alkali cell is nearly _____ times that of the lead-acid cell.
32. The average charging voltage for alkali cell is about
33. On the average the ampere-hour efficiency of an Edison cell is about
34. The active material of the positive plates of silver-zinc batteries is
35. Lead-acid cell has a life of nearly charges and discharges
36. Life of the Edison cell is at least
37. The internal resistance of a lead-acid cell is _____ that of Edison cell
38. Electrolyte used in an Edison cell is
39. Electrolyte used in a lead-acid cell is
40. Negative plate of an Edison cell is made of
41. The open circuit voltage of any storage cell depends wholly upon
42. The specific gravity of electrolyte is measured by ______.
43. When the specific gravity of the electrolyte of a lead-acid cell is reduced to 1.1 to 1.15 the cell is in
44. In ______ system the charging current is intermittently controlled at either a maximum or minimum value
45. Over charging is ______.
46. Under charging is _______.
47. Internal short circuits are caused by
48. The effect of sulphation is that the internal resistance
49. Excessive formation of lead sulphate on the surface of the plates happens because of
50. The substances which combine together to store electrical energy during the charge are called ______ materials
51. In a lead-acid cell, lead is called as
52. The lead-acid cell should never be discharged beyond
53. On overcharging a battery is ______.
54. Each cell has a vent cap _____.
55. Following will occur if level of electrolyte falls below plates
56. In constant voltage charging method, the charging current from discharged to fully charged condition
57. 48 ampere-hour capacity would deliver a current of
58. In constant-current charging method, the supply voltage from discharged to fully charged condition
59. Battery charging equipment is generally installed
60. Following will happen if the specific gravity of electrolyte becomes more than 1.23.
61. Batteries are charged by ______.
62. Cell short circuit results in _______.
63. Internal resistance of a cell is reduced by
64. Capacity of dry cells is
65. Battery container should be acid resistance, therefore it is made up of
66. Sulphated cells are indicated by ______.
67. In a lead-acid cell, if the specific gravity of sulphuric acid is 1.8, it will require following ratio of acid to water to get mixture of specific gravity of 1.3
68. Local action in a battery is indicated by
69. Following will happen if battery charging rate is too high
70. Internal resistance of a cell is due to
71. If a battery is wrongly connected on charge following will happen
72. In order that a hydrometer may float vertically in electrolyte its C.G. should be
73. If a lead-acid cell is discharged below 1.8 V the following will happen.
74. Life of the batteries is in the following ascending order.
75. Persons preparing electrolyte should wear
76. Excessive charging a battery tends to
77. Shelf life of a small dry cell is
78. The current flow through electrolyte is due to the movement of
79. Level of electrolyte in a cell should be _____ the level of plates
80. During discharge, the active material of both the positive and negative plates is changed to
81 _______ of electrolyte lndicates the state of charge of the battery.
82. The following indicate that battery on charge has attained full charge
83. Dry cell is modification of _______.
84. Capacity of a battery.is expressed in
85. In alkaline cell the electrolyte is ________.
86. Self charge of a Ni-Fe cell is _____ Edison cell.
87. Ampere hour capacity of an industrial battery is based on ____ hours discharge rate.
88. The body of Edison cell is made of ______.
89. Specific gravity of electrolyte in Edison cell is ________.
90. All the electrical connections between the battery and vehicle should be by
91. A battery of 6 cells will show a drop of _____ volts from fully charged state to fully discharged state.
92. During the idle period of the battery, strong electrolyte tends to change the active material of the cell into
93. Chargmg of sulphated battery produces ____ heat.
94. Hydrogen evolved during charging produces explosive mixture when it is more than
95. Weston standard cell at 20°C has voltage of ____ volts.
96. Extent of corrosion in the underground metal work depends upon
97. Mercury cell has which of the following characteristics ?
98. Charging a sulphated battery at high rate results in ________.
99. Short circuiting of a cell may be caused
100. In a battery cover is placed over the element and sealed to the top of the battery container. This is done
2. The charge required to liberate one gram equivalent of any substance is known as ______ constant
3. During the charging of a lead-acid cell
4. The capacity of a lead-acid cell does not depend on its _____.
5. During charging the specific gravity of the electrolyte of a lead-acid battery
6. The active materials on the positive and negative plates of a fully charged lead-acid battery are
7. When a lead-acid battery is in fully charged condition, the colour of its positive plate is
8. The active materials of a nickel-iron battery are
9. The ratio of ampere-hour efficiency to watt-hour efficiency of a lead-acid cell is
10. The best indication about the state of charge on a lead-acid battery is given by
11. The storage battery generally used in electric power station is
12. The output voltage of a charger is
13. Cells are connected in series in order to
14. Five 2 V cells are connected in parallel.The output voltage is
15. The capacity of a battery is expressed in terms of
16. Duringthe charging and discharging of a nickel-iron cell
17. As compared to constant-current system, the constant-voltage system of charging a lead acid cell has the advantage of
18. A dead storage battery can be revived by
19. As compared to a lead-acid cell, the efficiency of a nickel-iron cell is less due to its
20. Trickle charging of a storage battery helps to
21. Those substances of the cell which take active part in chemical combination and hence produce electricity during charging or discharging are known as______materials.
22. In a lead-acid cell dilute sulphuric acid (electrolyte) approximately comprises the following
23. It is noticed that durmg charging
24. It is noticed that during discharging the following does not happen
25. The ampere-hour efficiency of a leadacid cell is normally between
26. The watt-hour efficiency of a lead-acid cell varies between
27. The capacity of a lead-acid cell is measured in
28. The capacity of a lead-acid cell depends on
29. When the lead-acid cell is fully charged, the electrolyte assumes _____ appearance
30. The e.m.f. of an Edison cell, when fully charged, is nearly
31. The internal resistance of an alkali cell is nearly _____ times that of the lead-acid cell.
32. The average charging voltage for alkali cell is about
33. On the average the ampere-hour efficiency of an Edison cell is about
34. The active material of the positive plates of silver-zinc batteries is
35. Lead-acid cell has a life of nearly charges and discharges
36. Life of the Edison cell is at least
37. The internal resistance of a lead-acid cell is _____ that of Edison cell
38. Electrolyte used in an Edison cell is
39. Electrolyte used in a lead-acid cell is
40. Negative plate of an Edison cell is made of
41. The open circuit voltage of any storage cell depends wholly upon
42. The specific gravity of electrolyte is measured by ______.
43. When the specific gravity of the electrolyte of a lead-acid cell is reduced to 1.1 to 1.15 the cell is in
44. In ______ system the charging current is intermittently controlled at either a maximum or minimum value
45. Over charging is ______.
46. Under charging is _______.
47. Internal short circuits are caused by
48. The effect of sulphation is that the internal resistance
49. Excessive formation of lead sulphate on the surface of the plates happens because of
50. The substances which combine together to store electrical energy during the charge are called ______ materials
51. In a lead-acid cell, lead is called as
52. The lead-acid cell should never be discharged beyond
53. On overcharging a battery is ______.
54. Each cell has a vent cap _____.
55. Following will occur if level of electrolyte falls below plates
56. In constant voltage charging method, the charging current from discharged to fully charged condition
57. 48 ampere-hour capacity would deliver a current of
58. In constant-current charging method, the supply voltage from discharged to fully charged condition
59. Battery charging equipment is generally installed
60. Following will happen if the specific gravity of electrolyte becomes more than 1.23.
61. Batteries are charged by ______.
62. Cell short circuit results in _______.
63. Internal resistance of a cell is reduced by
64. Capacity of dry cells is
65. Battery container should be acid resistance, therefore it is made up of
66. Sulphated cells are indicated by ______.
67. In a lead-acid cell, if the specific gravity of sulphuric acid is 1.8, it will require following ratio of acid to water to get mixture of specific gravity of 1.3
68. Local action in a battery is indicated by
69. Following will happen if battery charging rate is too high
70. Internal resistance of a cell is due to
71. If a battery is wrongly connected on charge following will happen
72. In order that a hydrometer may float vertically in electrolyte its C.G. should be
73. If a lead-acid cell is discharged below 1.8 V the following will happen.
74. Life of the batteries is in the following ascending order.
75. Persons preparing electrolyte should wear
76. Excessive charging a battery tends to
77. Shelf life of a small dry cell is
78. The current flow through electrolyte is due to the movement of
79. Level of electrolyte in a cell should be _____ the level of plates
80. During discharge, the active material of both the positive and negative plates is changed to
81 _______ of electrolyte lndicates the state of charge of the battery.
82. The following indicate that battery on charge has attained full charge
83. Dry cell is modification of _______.
84. Capacity of a battery.is expressed in
85. In alkaline cell the electrolyte is ________.
86. Self charge of a Ni-Fe cell is _____ Edison cell.
87. Ampere hour capacity of an industrial battery is based on ____ hours discharge rate.
88. The body of Edison cell is made of ______.
89. Specific gravity of electrolyte in Edison cell is ________.
90. All the electrical connections between the battery and vehicle should be by
91. A battery of 6 cells will show a drop of _____ volts from fully charged state to fully discharged state.
92. During the idle period of the battery, strong electrolyte tends to change the active material of the cell into
93. Chargmg of sulphated battery produces ____ heat.
94. Hydrogen evolved during charging produces explosive mixture when it is more than
95. Weston standard cell at 20°C has voltage of ____ volts.
96. Extent of corrosion in the underground metal work depends upon
97. Mercury cell has which of the following characteristics ?
98. Charging a sulphated battery at high rate results in ________.
99. Short circuiting of a cell may be caused
100. In a battery cover is placed over the element and sealed to the top of the battery container. This is done
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