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Expected Questions series Thermodynamics Part-1
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Question based on 1st Law of Thermodynamics and SFEE

Deep Sangeet Maity
->VERIFIED EDUCATOR ->DESIGN ENGINEER @ SCHLUMBERGER ->KREATRYX GATE Content Developer ->99.4%ile GATE-18

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Unacademy user
Sakshi Pahwa
10 months ago
Good!
sir I have question that An insulated box contains 0.5kg of gas having Cv =0.98kj/kgk falls from a balloon 4km above the earth surface.the temperature rise of the gas when the Box Hits the ground will be ... I have doubt that if it is insulated then also there will be temperature rise or it will be zero
Deep Sangeet Maity
4 months ago
there will be a rise in Temperature....
Suraj prasad singh
4 months ago
okk and thank you
Suraj prasad singh
4 months ago
okk and thank you
Suraj prasad singh
4 months ago
okk and thank you
Deep Sangeet Maity
4 months ago
I hope you know the reason.... if not LET me know I'll tell you
sir in 1st question why temperature is not taken in degree Celsius???why it comes in Kelvin??
Deep Sangeet Maity
3 months ago
you can put in Kelvin as well as Celcius also
Deep Sangeet Maity
3 months ago
273 will become balance from both the sides
Dilshad Singh
3 months ago
k sir thank you
  1. Thermodynamics (Question series) Lesson-1 GATE Presented by Deep sangeet Maity


  2. About ME Working as a Design engineer at "Cameron Manufacturing India Limited (A Schlumberger Company)". .Currently working as "GATE content editor and developer"at "Kreatryx" .Qualified GATE "3" times .Qualified "Gate 2018 with 99.4 percentile 779(75.26 marks) gate score" in mechanical stream .Qualified "Gate 2017 with 98.83 percentile 726(70 marks) gate score" irn mechanical stream I also have an 2+ years of experience of teaching Engineering subjects like Engineering mechanies, Thermodynamies, SOM, HMIT Ex-CADD Engineer at "CADD CENTRE". Passed B.E. with honours with 76.71%. I am pursuing my MTech in Thermal I have an 2.5+ years of experience as a CADD Engineer. . . also have worked for "CAD ACADEMY" as a Design engineer for 1 year.


  3. Question: 1 kg of air in an insulated rigid tank of volume 1 m'is churned with a friction-less fan (see figure below) of 600 W capacity for 10 minutes. The fan efficiency is 100 %. Treating air as an ideal gas and neglecting kinetic and potential energy changes, what is the increase of pressure, to the nearest kPa? 600 W


  4. So Hank ork s done SeC


  5. -The fan is suo ithed on o 0x 606 sec. 360000


  6. dst law fThemedy nanic 360


  7. Nou Air can be treared es Td 1.39 142. 819 kP


  8. R charachen is tic gas con 2.


  9. Question: A well-insulated rigid hot water tank receives steady flow of water from two sources as shown in the figure below 1 kg/ s at 80 C 5 kgl s at 50 C Back-up heater at 60 C There is no accumulation of water in the tank. A back-up heater is provided to ensure a constant outflow temperature of water at 60 C from the tank under steady state. What is the required capacity of the back-up heater to the nearest kW?_


  10. 4st Louw of thermo d narui c s levo ener in + Ang