GTU · BE Mechanical · Semester 3
GTU 3131905 Engineering Thermodynamics Old Question Papers PDF
Official Gujarat Technological University (GTU) old question papers PDF (Regular & Remedial) and step-by-step solved questions for Engineering Thermodynamics across 2025 – 2026 examinations.
7 questions GTU asked more than onceAsked in all 2 papers: Draw Rankine cycle on P-v, T-s and h-s diagrams and derive an expression for its thermal efficiency with and without pump work.See listExam papers
Most repeated questions
7 questions GTU set in two or more of 2 papers, most repeated first. Tap a year to open that paper at the question.
Draw Rankine cycle on P-v, T-s and h-s diagrams and derive an expression for its thermal efficiency with and without pump work.
An engine working on the Otto cycle is supplied with air at 0.1 MPa, 35℃. The compression ratio is 8. Heat supplied is 2100 KJ/kg. Calculate the maximum pressure and temperature of the cycle, the cycle efficiency and mean effective pressure (for air, Cp = 1.005, Cv = 0.718 and R = 0.287 KJ/kg K).
Explain principle of increase of entropy. Apply it for the heat transfer through a finite temperature difference.
5 kg of water at 0℃ is exposed to reservoir at 98℃. Calculate the change of entropy of water, reservoir and universe. Assume that specific heat of water is 4.187 KJ/Kg- K.
Describe with neat diagram the bomb calorimeter.
List the desirable properties of a good refrigerant.
State the assumptions made in the analysis of air standard cycles.
Which branches take this subject
GTU's syllabus lists 3131905 for 2 branches. One set of papers serves all of them.
Semester 3: 2 branches
Automobile Engineering, Mechanical Engineering
Other Semester 3 subjects
Common questions
Are these GTU 3131905 Engineering Thermodynamics papers valid for both Regular and Remedial exams?
Yes. Gujarat Technological University (GTU) follows the same 70-mark syllabus, exam blueprint, and 23-mark passing cutoff for both Regular and Remedial (ATKT/backlog) examinations. All 2 past exam sessions (2025 – 2026) serve as comprehensive preparation for either attempt.
How can I download GTU 3131905 Engineering Thermodynamics old question papers PDF?
You can download official GTU 3131905 original question paper PDFs directly from the table above with 1 click and zero deceptive ads or wait timers. Every paper also includes interactive online questions with AI study prompts.
What is the passing mark for GTU Engineering Thermodynamics (3131905)?
The external theory exam carries 70 marks. The minimum passing cutoff is 23 marks (33%). Exam duration is 2.5 hours.
What is the GTU exam pattern for 3131905?
The examination contains 5 main questions of 14 marks each, totaling 70 marks. Questions 2 through 5 provide internal OR choices, typically split into 3-mark, 4-mark, and 7-mark questions.