Automobile Engineering in ME
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/4
P.L.A.N
2 × P.L.A.N
P.L.A.N/2

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Automobile Engineering in ME
The path taken by intake air is

Carburettor (or throttle body) air cleaner intake manifold intake ports cylinders
Air cleaner carburettor (or throttle body) intake ports intake manifold cylinders
Air cleaner intake manifold carburettor (or throttle body) intake ports cylinders
Air cleaner carburettor (or throttle body) intake manifold intake ports cylinders

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Automobile Engineering in ME
The function of an oil control orifice is that it

Removes impurities from cylinder head lubricating oil
Regulates the pressure of engine oil supplied by the oil pump for the lubrication of cylinder head mechanism and other purposes
Turns oil into fine mist for spray lubrication
Returns cylinder head lubricating oil to the oil pan at high speed

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Automobile Engineering in ME
The drive-shafts are connected to the differential and wheel hubs through universal joints because the universal joints

Compensate for variations in the relative positions of the differential and the wheels which result from bumpy road surfaces or other similar driving conditions.
None of these
Absorb any difference in speed between the left and right wheels when the vehicle is turning
Absorb the vibrations transferred from the surface of the road

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