A. glass
B. plastic
C. wood
D. all above
Related Mcqs:
- 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 - In a lead-acid battery the energy is stored in the form of___________?
A. charged ions
B. chemical energy
C. electrostatic energy
D. electromagnetic energy - 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
A. 6 parts of acid to 4 parts of water
B. 4 parts of acid to 4 parts of water
C. 4 parts of acid to 6 parts of water
D. 4 parts of acid to 8 parts of water - 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 a lead-acid battery is in fully charged condition, the color of its positive plate is__________?
A. dark grey
B. brown
C. dark brown
D. none of 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 - The best indication about the state of charge on a lead-acid battery is given by____________?
A. output voltage
B. temperature of electrolyte
C. specific gravity of electrolyte
D. none of the above - The common impurity in the electrolyte of lead-acid battery is_____________?
A. chlorine
B. dust particles
C. lead crystals
D. iron - As compared to constant-current system, the constant-voltage system of charging a lead acid cell has the advantage of___________?
A. reducing time of charging
B. increasing cell capacity
C. both (A) and (B)
D. avoiding excessive gassing - In a lead-acid cell dilute sulfuric acid (electrolyte) approximately comprises the following__________?
A. one part H2O, three parts H2SO4
B. two parts H2O, two parts H2SO4
C. three parts H2O, one part H2SO4
D. all H2S04
