SSC JE Mechanical Engineering 28 Oct 2020 Shift 1 Papers

Question : 185 of 200

Marks: +1, -0

A car has four-stroke in line diesel engine whose compression ratio is 21 : 1 and expansion ratio is 10 : 1. What is the cut off ratio ?

Solution:

Given:

r = 21, r_e = 10, r_c = ?

We know that,

r_c × r_e = r

r_c × 10 = 21

r_c = 2.1

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