The main characteristics of a maintenance-free (MF) battery is that

a maintenance-free battery requires little maintenance during normal use and it is sufficient to add water instead of an electrolyte containing sulphuric acid
a maintenance-free battery has a relatively short shelf life when compared with standard batteries
since it is sealed, the water in a maintenance-free battery is not lost through evaporation thus accordingly it is not necessary to top up the cells with water
recharging of a mainte
✅ The correct answer is option C.

Which one of the following statement correctly describe the construction of a bevel-gear type differential?

The drive shafts are splined to the differential carrier.
The left side gear and the differential carrier rotate in constant unison.
The differential carrier houses differential pinion gears and side gears, each pinion gear meshes with a different side gear.
The differential carri
✅ The correct answer is option D.

The indicated power of a four-stroke engine (in watts) is equal to (where P = Mean effective pressure in N/m2, L = Length of stroke in metres, A = Cross-sectional area of the piston in m2, and N = Speed of the engine in revolutions per second (r.p.s))

P.L.A.N/2
P.L.A.N
2 x P.L.A.N
P.L.A.N/4
✅ The correct answer is option A.