Skip to content
Early access — you're among the first to try PYQLabs. Share feedback
GATE 2021Set 1Q45NATanswer keyexplanation soonhard
Mechanical Engineering · Thermodynamics
Concept intelligence
Jump into a concept drill from this question.
Mastery map →
Studying seriously for GATE CSE?

Keep browsing free. Pro unlocks the paid study loop: explanations, topic mastery, mistake notebook, and custom PYQ drills.

See GATE CSE betaOpen notebook
Recurring concept
See all 5

Thermodynamics has appeared in GATE Mechanical Engineering 5 times across 4 years (2019, 2021, 2025, 2026).

∑ has math
ThermodynamicsRankine CycleSteam Power PlantThermal Efficiency