GATE Previous years Thermodynamics questions Important one-mark GATE questions By Rutuja Bothara
RUTUJA BOTHARA Perusing B.Tech in Mechanical Engineering from Vellore Institute of Technology, Vellore. (2015- 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.
G)bo- charge d fouS troke dire ct injjec-tion diesel engine has a displacemend 2sL . The eh gine has ah oud Put of gsokw at 2200 r m. The moan ef fecLive P ress cune in M Pa closes+ +o 2 b) O.2 dl 2. 3 For 2 Stroke Pem = 2x10 Pa = 2 MPa
DA gas contained in a cylinde 's compresse d , tha required fo compress ion being sooo kT. outing the Process, he at interaction 2000 kJ caues the surroundings o the heated. Th 'ni e nal energy of the gad dut ' n g the Process ' e change in -2000 kT
.The following four figures have been drawn to represent a fictitious thermodynamic cycle, on the P-V and T-S planes. According to the first law of thermodynamics, eqcal areas are ehicitseay thermodynamics. (A) Fig 1 and 2 (B) Fig 1 and 3 (3) Fig 1 and 4 (4) Fig 2 and 3
fig- 1 fig. 2 fig- 3 fig.4 What is the area under p-v diagram?Work transfer What is the area under T-s diagram? = Heat transfer According the First law of thermodynamics in a cycle, we have We see that figure 1 and 2 satisfies the first law of thermodynamics and hence both have the same area.
Acompre ndersoes a reversible steody flow Pro cen. The gas + inlet ahd oat le t of -the corn Prets or is des igne d as s+age! Potentia andKinetic eneraa hana* are anoredhe Fo -to be are us e ol bota +10 ns g as The Specific cooe qired to be supplied to the cornpre Ssor for hi gas com Proce3 S 2.
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rox gen are mixed a cia baHcady uo ith anothe 2 mol of oxygen in mixing char, be , so th at- the final to +a/ Pret3 ure and those o nd , visual consti tuents a+-thei S R Th change i entropy d +o Pet l oxysen , is R In b 2eho R In 2 2 a diab proces dgo
1) Availa bi lity of a systero at any given S+ate is a) a propet the ystem aximum 0rk obtainable as the system goes to dead State -The total energ of the S stern ) The maximum efal ork obtain a ble a* the System goes to dead 6tate
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