Related Questions

In leaf springs, the maximum bending stress developed in the plates is (where W = Load acting on the spring, $$l$$ = Span of the spring, n = Number of plates, b = Width of plates and t = Thickness of plates)
A $$\frac{{{\text{W}}l}}{{{\text{nb}}{{\text{t}}^2}}}$$
B $$\frac{{3{\text{W}}l}}{{2{\text{nb}}{{\text{t}}^2}}}$$
C $$\frac{{2{\text{W}}l}}{{{\text{nb}}{{\text{t}}^2}}}$$
D $$\frac{{3{\text{W}}l}}{{{\text{nb}}{{\text{t}}^2}}}$$
The negative plates of a lead acid battery has
A Lead peroxide (PbO2)
B Spongy lead (Pb)
C Lead sulphate (PbSO4)
D Sulphuric acid (H2SO4)
The positive plates of a lead acid battery has
A Lead peroxide (PbO2)
B Spongy lead (Pb)
C Lead sulphate (PbSO4)
D Sulphuric acid (H2SO4)
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
When a lead storage battery is discharged,
A SO2 is evolved
B Lead sulphate is consumed
C Lead is formed
D Sulphuric acid is consumed
The lead-acid cell should never be discharged beyond
A 1.8 V
B 1.9 V
C 2 V
D 2.1 V
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
During charging the specific gravity of the electrolyte of a lead-acid battery
A increases
B decreases
C remains the same
D becomes zero
While preparing electrolyte for a lead-acid battery
A water is poured into acid
B acid is poured into water
C anyone of the two can be added to other chemical
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

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