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Question
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)
Options:
A .  P.L.A.N/2
B .  P.L.A.N
C .  2 × P.L.A.N
D .  P.L.A.N/4
Answer: Option A

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