Questions and Answers
11.The negative plates of a lead acid battery has
spongy lead (Pb)
12.The temperature at which tyre inflation pressure should be checked is
ambient temperature
13.The calorific value of Diesel is about
45.5 MJ/kg
Note:-The calorific value of diesel fuel is roughly 45.5 MJ/kg (megajoules per kilogram), slightly lower than petrol which is 45.8 MJ/kg. However, diesel fuel is denser than petrol and contains about 15% more energy by volume (roughly 36.9 MJ/litre compared to 33.7 MJ/litre).
14.The correct flow of power through the drive train is
engine-clutch – mainshaft- countershaft -final driven gear -driveshafts - wheels
15.The octane number of compressed natural gas (CNG) is
120
16.The compression ratio for Diesel engines usually lies in the range of
15-25
17.The piston compression rings are made of
cast iron
18.When the brake pedal free play is less than the specified value, then the
brake drags
19.The three basic cylinder arrangements for automotive engines are
in line, V, and opposed
20.The connecting rods are generally made of
I shaped crosssection.
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