Power Sources » Exercise - 13. The ratio of Ah efficiency to Wh efficiency of a lead-acid cell is : (a) always less than one (b) just one (c) always greater than one (d) either (a) or (b)
Power Sources » Exercise - 1 1. Active materials of a lead-acid cell are : (a) lead peroxide (b) sponge lead (c) dilute sulphuric acid (d) all the above
Power Sources » Exercise - 18. The active materials of a nickel-iron battery are : (a) nickel hydroxide (b) powdered iron and its oxides (c) 21% solution of caustic potash (d) all of the above