A. Pb02
B. PbSC-4
C. PbO
D. Pb
Related Mcqs:
- During charging the specific gravity of the electrolyte of a lead-acid battery
A. increases
B. decreases
C. remains the same
D. becomes zero - When the specific gravity of the electrolyte of a lead-acid cell is reduced to 1.1 to 1.15 the cell is in___________?
A. charged state
B. discharged state
C. both (A) and (B)
D. active state - ______ of electrolyte indicates the state of charge of the battery
A. colour
B. mass
C. viscosity
D. specific gravity - The common impurity in the electrolyte of lead-acid battery is_____________?
A. chlorine
B. dust particles
C. lead crystals
D. iron - 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 - Excessive charging a battery tends to____________?
A. produce gassing
B. increase the internal resistance of the battery
C. to corrode the positive plates into lead peroxide thereby weakening them physically
D. bring about all above changes - The active materials of a nickel-iron battery are___________?
A. nickel hydroxide
B. powdered iron and its oxide
C. 21% solution of KOH
D. all of the above - The active materials on the positive and negative plates of a fully charged lead-acid battery are_______?
A. lead and lead peroxide
B. lead sulphate and lead
C. lead peroxide and lead
D. none of the above - Level of electrolyte in a cell should be ________ the level of plates
A. below
B. equal to
C. above
D. none of the above - In alkaline cell the electrolyte is_____________?
A. dilute sulphuric acid
B. concentrated sulphuric acid
C. NaOH
D. KOH
