Question: A heat engine operates on a cycle ABCDA consisting of two isochoric transformations and two isobaric transformations. Transformation AB is isobaric at P1=4*10 5 Pa;

A heat engine operates on a cycle ABCDA consisting of two isochoric transformations and two isobaric transformations. Transformation AB is isobaric at P1=4*10⁵Pa; transformation BC is isochoric at V1=5 liters; transformation CD is isobaric at P2=2*10⁵Pa; transformation DA is isochoric at V2=3 liters. Find the efficiency of this heat engine, in %. The gas is monoatomic.

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1) 33.4

2) 27.5

3) 13.8

4) 41.7

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