GATE Previous years Thermodynamics questions GATE 2016 Thermodynamics solved questions set 1 By Rutuja Bothara

RUTUJA BOTHARA . Perusing B.Tech in Mechanical Engineering from Institute of Technology, Vellore. (2015- Vellore 2019) Cleared JEE Mains 2015 Cleared VITEEE-2015 with AIR 8718 .Cracked HITSEEE-2015 with AIR 91 . Worked as a Career Counsellor in Teachers Academy (2016- 2018) and BOLO app. https://unacademy.com/user/ rurutujajb96-9511

Which of the following statements are TRUE with respect to heat and work? (i) They are boundary phenomena -(ii) They are exact differentials (ii) They are path functions 1. both (i) and (ii) 2. both (i) and (iii) 3. both (ii) and (iii) 4. only (ii)

Heat and Work both are boundary Phenomena and also depend on the path foll owed by the process Ihexact Integral

The INCORRECT statement about regeneration in vapor power cycle is that (A) it increases the irreversibility by adding the liquid with higher energy content to the steam generator (B) heat is exchanged between the expanding fluid in the turbine and the compressed fluid before heat addition (C) the principle is similar to the principle of Stirling gas cycle (D) it is practically implemented by providing feed water heaters

Regeheration is used to dectease the rreversibility betweeh hot and cold fluids in the boilee drum

For water at 250 C, dps/dTS= 0.189 kPa/K (ps is the saturation pressure in kPa and Ts is the saturation temperature in K) and the specific volume of dry saturated vapour is 43.38 m3/kg. Assume that the specific volume of liquid is negligible in comparlson with that of vapour Using the Clausius-Clapeyron equation, an estimate of the enthalpy of evaporation of water at 25 C (in kJ/kg) is

clausias-clapeyrah equation is dishes

hf TSVg cITS 251273) 43-38 hfg 2443-248 KJ KI

An ideal gas undergoes a reversible process in which the pressure varies linearly with volume. The conditions at the start (subscript 1) and at the end (subscript 2) of the process with usual notation are: pl 100 kPa,V1 0.2m3 and p2- 200 kPa,V2 0.1 m3 and the gas constant, R 0.275 k]/kg-K. The magnitude of the work required for the process (in kJ) is

-Consider a steam power plant operating on thee simple ideal Rankine cycle. Steam enters the turbine at 3 MPa and 350 C and is condensed in the condenser at a pressure of 75 kPa. Determine the thermal efficiency of this cycle,for saturated liquid,

h2 384.3g t 0,886 2278.6 h4 384. o.oo1037( 3000-75) h 4-38 7-42

Enroll

121

✕Download

Rutuja Bothara

Strengthen GATE /PSU/ESE/SSC JE/RRB JE /campus Placements preparation.
A passionate mechanical engineer -VIT University

U

Unacademy user

Ashish

10 months ago

3/5
thank you mam.

0

Reply

Vb

Vaibhavi bora

6 months ago

Thanks

0

Reply

Rutuja Bothara

6 months ago

Thank you