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1 kg of air is compressed from 40 m^3 volume under 100 kPa pressure to 1 m^3 volume. What will be the pressure at constant temperature?

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1 kg of air is compressed from 40 m^3 volume under 100 kPa pressure to 1 m^3 volume.  What will be the pressure at constant temperature?

(a) 5000 kPa

(b) 6170 kPa

(c) 3215 kPa

(d) 4000 kPa

I have been asked this question during an interview.

My question is based upon Diesel Engine Vs. Petrol Engine topic in section Internal Combustion Engine of Farm Machinery

1 Answer

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Best answer
Correct option is (d) 4000 kPa

To explain: Using the relation

P1V1 = P2V2

P2 = \(\frac{P_1*V_1}{V_2} = \frac{100*40}{1} \)

P2 = 4000 kPa.

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