Art of judging influence of stars upon human affairs is known as _______?
A. Astrology
B. Paleontology
C. Meteorology
D. Geology
Month: December 2018
The output voltage of a charger is__________?
The output voltage of a charger is__________?
A. less than the battery voltage
B. higher than the battery voltage
C. the same as the battery voltage
D. none of the above
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____________?
A. just one
B. always greater than one
C. always less than one
D. none of the above
The storage battery generally used in electric power station is__________?
The storage battery generally used in electric power station is__________?
A. nickel-cadmium battery
B. zinc-carbon battery
C. lead-acid battery
D. none of the above
During the charging of a lead-acid cell__________?
During the charging of a lead-acid cell__________?
A. its voltage increases
B. it gives out energy
C. its cathode becomes dark chocolate brown in colour
D. specific gravity of H2SO4 decreases
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_______?
A. lead and lead peroxide
B. lead sulphate and lead
C. lead peroxide and lead
D. none of the above
The capacity of a lead-acid cell does not depend on its___________?
The capacity of a lead-acid cell does not depend on its___________?
A. temperature
B. rate of charge
C. rate of discharge
D. quantity of active material
The hundredth anniversary of a significant event is known as ________?
The hundredth anniversary of a significant event is known as ________?
A. Centenary
B. Elysium
C. Assassin
D. None of the above
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
A. time
B. Faraday’s
C. Boltzman
When a lead-acid battery is in fully charged condition, the color of its positive plate is__________?
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