A six-cylinder, four-stroke CI engine has a bore of 10 cm and a stroke of 14 cm. If the engine runs at 2500 rpm and has a brake load of 480 N, what is the barometer reading?

Here's a step-by-step solution for the problem:

First, let's list the given data and convert them to consistent SI units:

• Number of cylinders, $k = 6$
• Engine type: Four-stroke CI engine
• Bore, $D = 10 \text{ cm} = 0.10 \text{ m}$
• Stroke, $L = 14 \text{ cm} = 0.14 \text{ m}$
• Speed, $N = 2500 \text{ r.p.m.}$
• Brake load, $W = 480 \text{ N}$
• Barometer reading, $P