Lead-acid cell has a life of nearly charges and discharges
Lead-acid cell has a life of nearly charges and discharges
In ______ system the charging current is intermittently controlled at either a maximum or minimum value
In ______ system the charging current is intermittently controlled at either a maximum or minimum value
Battery charging equipment is generally installed
Battery charging equipment is generally installed
Those substances of the cell which take active part in chemical combination and hence produce electricity during charging or discharging are known as______materials.
Those substances of the cell which take active part in chemical combination and hence produce electricity during charging or discharging are known as______materials.
On overcharging a battery
On overcharging a battery
Which of the following battery is used for aircraft ?
Which of the following battery is used for aircraft ?
The ratio of ampere-hour efficiency to watt-hour efficiency of a lead-acid cell is
The ratio of ampere-hour efficiency to watt-hour efficiency of a lead-acid cell is
When the load resistance equals the generator resistance which of the following will be maximum ?
When the load resistance equals the generator resistance which of the following will be maximum ?
Which among the following constitutes the major load for an automobile battery ?
Which among the following constitutes the major load for an automobile battery ?
The ampere-hour efficiency of a leadacid cell is normally between
The ampere-hour efficiency of a leadacid cell is normally between
The active materials on the positive and negative plates of a fully charged lead-acid battery are
The active materials on the positive and negative plates of a fully charged lead-acid battery are
In a lead-acid cell dilute sulfuric acid (electrolyte) approximately comprises the following
In a lead-acid cell dilute sulfuric acid (electrolyte) approximately comprises the following
Which of the following cell has a reversible chemical reaction ?
Which of the following cell has a reversible chemical reaction ?
Ampere hour capacity of an industrial battery is based on ____ hours discharge rate.
Ampere hour capacity of an industrial battery is based on ____ hours discharge rate.
Short circuiting of a cell may be caused
Short circuiting of a cell may be caused
48 ampere-hour capacity would deliver a current of
48 ampere-hour capacity would deliver a current of
Satellite power requirement is provided through
Satellite power requirement is provided through
Over charging
Over charging
The charge required to liberate one gram equivalent of any substance is known as ______ constant
The charge required to liberate one gram equivalent of any substance is known as ______ constant
For a cell to work, which of the following condition(s) become necessary ?
For a cell to work, which of the following condition(s) become necessary ?
Petroleum jelly is applied to the electrical connections to the lead-acid battery
Petroleum jelly is applied to the electrical connections to the lead-acid battery
Dry cell is modification of
Dry cell is modification of
The watt-hour efficiency of a lead-acid cell varies between
The watt-hour efficiency of a lead-acid cell varies between
As compared to a lead-acid cell, the efficiency of a nickel-iron cell is less due to its
As compared to a lead-acid cell, the efficiency of a nickel-iron cell is less due to its
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
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
In alkaline cell the electrolyte is
In alkaline cell the electrolyte is
Under normal charging rate, the charging current should be
Under normal charging rate, the charging current should be
Batteries are charged by
Batteries are charged by
Level of electrolyte in a cell should be _____ the level of plates
Level of electrolyte in a cell should be _____ the level of plates
If a lead-acid cell is discharged below 1.8 V the following will happen.
If a lead-acid cell is discharged below 1.8 V the following will happen.
Negative plate of an Edison cell is made of
Negative plate of an Edison cell is made of
Sulphated cells are indicated by
Sulphated cells are indicated by
If a battery is wrongly connected on charge following will happen
If a battery is wrongly connected on charge following will happen
The capacity of a lead-acid cell is measured in
The capacity of a lead-acid cell is measured in
Electrolyte used in an Edison cell is
Electrolyte used in an Edison cell is
Electrolyte used in a lead-acid cell is
Electrolyte used in a lead-acid cell is
The active materials of a nickel-iron battery are
The active materials of a nickel-iron battery are
The specific gravity of electrolyte is measured by
The specific gravity of electrolyte is measured by
The effect of sulphation is that the internal resistance
The effect of sulphation is that the internal resistance
Excessive charging a battery tends to
Excessive charging a battery tends to
The substances which combine together to store electrical energy during the charge are called ______ materials
The substances which combine together to store electrical energy during the charge are called ______ materials
During the charging and discharging of a nickel-iron cell
During the charging and discharging of a nickel-iron cell
Battery container should be acid resistance, therefore it is made up of
Battery container should be acid resistance, therefore it is made up of
Cells are connected in series in order to
Cells are connected in series in order to
Charging a sulphated battery at high rate results in
Charging a sulphated battery at high rate results in
The active material of the positive plates of silver-zinc batteries is
The active material of the positive plates of silver-zinc batteries is
When two batteries are connected in parallel, it should be ensured that
When two batteries are connected in parallel, it should be ensured that
The internal resistance of an alkali cell is nearly _____ times that of the lead-acid cell.
The internal resistance of an alkali cell is nearly _____ times that of the lead-acid cell.
In constant voltage charging method, the charging current from discharged to fully charged condition
In constant voltage charging method, the charging current from discharged to fully charged condition
The current flow through electrolyte is due to the movement of
The current flow through electrolyte is due to the movement of
Internal resistance of a cell is due to
Internal resistance of a cell is due to
During discharge, the active material of both the positive and negative plates is changed to
During discharge, the active material of both the positive and negative plates is changed to
Each cell has a vent cap
Each cell has a vent cap
During charging the specific gravity of the electrolyte of a lead-acid battery
During charging the specific gravity of the electrolyte of a lead-acid battery
A battery of 6 cells will show a drop of _____ volts from fully charged state to fully discharged state.
A battery of 6 cells will show a drop of _____ volts from fully charged state to fully discharged state.
The storage battery generally used in electric power station is
The storage battery generally used in electric power station is
The capacity of a lead-acid cell does not depend on its
The capacity of a lead-acid cell does not depend on its
On the average the ampere-hour efficiency of an Edison cell is about
On the average the ampere-hour efficiency of an Edison cell is about
Which of the following has lower sp. gravity V
Which of the following has lower sp. gravity V
In constant-current charging method, the supply voltage from discharged to fully charged condition
In constant-current charging method, the supply voltage from discharged to fully charged condition
Persons preparing electrolyte should wear
Persons preparing electrolyte should wear
Chargmg of sulphated battery produces ____ heat.
Chargmg of sulphated battery produces ____ heat.
Capacity of dry cells is
Capacity of dry cells is
A constant-voltage generator has
A constant-voltage generator has
The average charging voltage for alkali cell is about
The average charging voltage for alkali cell is about
It is noticed that durum charging
It is noticed that durum charging
Which of the following primary cells has the highest voltage ?
Which of the following primary cells has the highest voltage ?
The internal resistance of a lead-acid cell is that of Edison cell
The internal resistance of a lead-acid cell is that of Edison cell
In a lead-acid cell, lead is called as
In a lead-acid cell, lead is called as
Mercury cell has which of the following characteristics?
Mercury cell has which of the following characteristics?
The best indication about the state of charge on a lead-acid battery is given by
The best indication about the state of charge on a lead-acid battery is given by
Shelf life of a small dry cell is
Shelf life of a small dry cell is
The following indicate that battery on charge has attained full charge
The following indicate that battery on charge has attained full charge
Which of the following is incorrect?
Which of the following is incorrect?
_______ of electrolyte indicates the state of charge of the battery
_______ of electrolyte indicates the state of charge of the battery
Five 2 V cells are connected in parallel. The output voltage is
Five 2 V cells are connected in parallel. The output voltage is
Which of the following factors adversely affects the capacity of the leadacid battery ?
Which of the following factors adversely affects the capacity of the leadacid battery ?
As compared to constant-current system, the constant-voltage system of charging a lead acid cell has the advantage of
As compared to constant-current system, the constant-voltage system of charging a lead acid cell has the advantage of
During the charging of a lead-acid cell
During the charging of a lead-acid cell
The capacity of a lead-acid cell depends on
The capacity of a lead-acid cell depends on
The body of Edison cell is made of
The body of Edison cell is made of
The open circuit voltage of any storage cell depends wholly upon
The open circuit voltage of any storage cell depends wholly upon
Following will occur if level of electrolyte falls below plates
Following will occur if level of electrolyte falls below plates
A dead storage battery can be revived by
A dead storage battery can be revived by
Extent of corrosion in the underground metal work depends upon
Extent of corrosion in the underground metal work depends upon
The lead-acid cell should never be discharged beyond
The lead-acid cell should never be discharged beyond
In order that a hydrometer may float vertically in electrolyte its C.G. should be
In order that a hydrometer may float vertically in electrolyte its C.G. should be
Trickle charging of a storage battery helps to
Trickle charging of a storage battery helps to
Following will happen if battery charging rate is too high
Following will happen if battery charging rate is too high
When the specific gravity of the electrolyte of a lead-acid cell is reduced to 1.1 to 1.15 the cell is in
When the specific gravity of the electrolyte of a lead-acid cell is reduced to 1.1 to 1.15 the cell is in
While preparing electrolyte for a lead-acid battery
While preparing electrolyte for a lead-acid battery
When the lead-acid cell is fully charged, the electrolyte assumes _____ appearance
When the lead-acid cell is fully charged, the electrolyte assumes _____ appearance
Following will happen if the specific gravity of electrolyte becomes more than 1.23.
Following will happen if the specific gravity of electrolyte becomes more than 1.23.
The common impurity in the electrolyte of lead-acid battery is
The common impurity in the electrolyte of lead-acid battery is
Internal resistance of a cell is reduced by
Internal resistance of a cell is reduced by
During the idle period of the battery, strong electrolyte tends to change the active material of the cell into
During the idle period of the battery, strong electrolyte tends to change the active material of the cell into
Life of the batteries is in the following ascending order.
Life of the batteries is in the following ascending order.
Internal short circuits are caused by
Internal short circuits are caused by
Cells are connected in parallel to
Cells are connected in parallel to
Weston standard cell at 20°C has voltage of ____ volts.
Weston standard cell at 20°C has voltage of ____ volts.
