Cp and Cv 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:

This question was previously asked in
SSC JE ME Previous Paper 7 (Held on: 25 Sep 2019 Evening)
View all SSC JE ME Papers >
  1. 179.5 kJ/kg
  2. 250 kJ/kg
  3. 420 kJ/s
  4. 430.75 kJ/kg

Answer (Detailed Solution Below)

Option 2 : 250 kJ/kg
Free
Thermodynamics for All AE/JE ME Exams Mock Test
4.7 K Users
20 Questions 20 Marks 20 Mins

Detailed Solution

Download Solution PDF

Concept:

Gate ME 2017 IC Application Images-Q4

Heat addition in the diesel cycle is a constant pressure process.

Heat added (Q) = Cp × (T­3 – T2) kJ/kg

Cp = Heat capacity at the constant process.

T2 = Temperature at the end of the heat addition process

T2 = Temperature at the beginning of the heat addition process

Calculation:

Given:

Cp = 1 kJ/kgk, T3 = 1723 K, T2 = 1473 K

Q = 1 × (1723 - 1473) = 250 kJ/kg

Latest SSC JE ME Updates

Last updated on Jul 15, 2025

-> SSC JE ME Notification 2025 has been released on June 30. 

-> The SSC JE Mechanical engineering application form are activated from June 30 to July 21. 

-> SSC JE 2025 CBT 1 exam for Mechanical Engineering will be conducted from October 27 to 31. 

-> SSC JE exam to recruit Junior Engineers in different disciplines under various departments of the Central Government.

-> The selection process of the candidates for the SSC Junior Engineer post consists of Paper I, Paper II, Document Verification, and Medical Examination.

-> Candidates who will get selected will get a salary range between Rs. 35,400/- to Rs. 1,12,400/-.

-> Candidates must refer to the SSC JE Previous Year Papers and SSC JE Civil Mock Test, SSC JE Electrical Mock Test, and SSC JE Mechanical Mock Test to understand the type of questions coming in the examination.

Get Free Access Now
Hot Links: teen patti bindaas teen patti online teen patti sequence teen patti master downloadable content teen patti online game