SSC JE Mechanical Engineering 25 Sep 2019 Shift 1 Paper

Question : 125 of 200

Marks: +1, -0

C_p

and

C_v

for working fluid in a diesel cycle are 1 kJ/kgK and 0.718 kJ/kgK respectively. Temperatures at the beginning and the end of the heat addition process are 1473 K and 1723 K respectively. The heat added is:

179.5 kJ/kg
250 kJ/kg
420 kJ/s
430.75 kJ/kg

Validate

Solution:

{C}_{{p}}=1 kJ\/kgk, {T}_{3}=1723 {K}, {T}_{2}=1473 {K}

{Q}=1 \×(1723-1473)=250 {kJ} \/ {kg}

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