A. rectifiers
B. engine generator sets
C. motor generator sets
D. any one of the above methods
A. 20 to 30%
B. 40 to 50%
C. 60 to 70%
D. 90 to 95%
A. copper
B. lead
C. iron
D. silver oxide
A. lead and lead peroxide
B. lead sulphate and lead
C. lead peroxide and lead
D. none of the above
A. colour of electrode
B. gassing
C. specific gravity
D. all above
A. excessive gassing under load conditions
B. excessive drop in the specific gravity of electrolyte even when the cell is on open circuit
C. both A. and (b)
D. none of the above
A. Current
B. Efficiency of the circuit
C. Power in the load resistance
D. Voltage across the load resistance