A. nickel hydroxide
B. powdered iron and its oxide
C. 21% solution of KOH
D. all of the above
A. increase the efficiency
B. increase the current capacity
C. increase the voltage output
D. increase the internal resistance
A. colour of electrode
B. gassing
C. specific gravity
D. all above
A. Flat discharge current-voltage curve
B. High power to weight ratio
C. Comparatively longer shelf life under adverse conditions of high temperature and humidity
D. All of the above
A. increases
B. decreases
C. remains the same
D. becomes zero
A. resistance of electrolyte
B. electrode resistance
C. surface contact resistance between electrode and electrolyte
D. all above
A. Lead-acid battery
B. Nickel-iron battery
C. Dry cell battery
D. Silver oxide battery