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haridas_mandal
Group Title
An ideal gas is subjected to a cyclic process ABCD as depicted in the PV diagram given. Which of the following curves represents the equivalent cyclic process?
 one year ago
 one year ago
haridas_mandal Group Title
An ideal gas is subjected to a cyclic process ABCD as depicted in the PV diagram given. Which of the following curves represents the equivalent cyclic process?
 one year ago
 one year ago

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aish_premrenu Group TitleBest ResponseYou've already chosen the best response.0
Where is the 'given' PV diagram?
 one year ago

haridas_mandal Group TitleBest ResponseYou've already chosen the best response.0
dw:1359433955167:dw
 one year ago

haridas_mandal Group TitleBest ResponseYou've already chosen the best response.0
The PV diagram
 one year ago

aish_premrenu Group TitleBest ResponseYou've already chosen the best response.0
What's the question? cyclic process equivalent to? any equation given?
 one year ago

haridas_mandal Group TitleBest ResponseYou've already chosen the best response.0
The diagram is on the extreme left is the PV Diagram and the all the 4 options given on PT diagram. My fault , I do not know how to amend the sketch as there is no eraser facility..One of the 4 options is right.
 one year ago

haridas_mandal Group TitleBest ResponseYou've already chosen the best response.0
dw:1359435181308:dw
 one year ago

Mashy Group TitleBest ResponseYou've already chosen the best response.0
ok lets do this section by section.. in your original graph.. section A to B.. what kind of process is it??
 one year ago

haridas_mandal Group TitleBest ResponseYou've already chosen the best response.0
It is const pr i.e isobaric one.
 one year ago

Mashy Group TitleBest ResponseYou've already chosen the best response.0
ok.. so you see that volume is expanding keeping pressure constant... now tell me during this process what happens to temperature?
 one year ago

haridas_mandal Group TitleBest ResponseYou've already chosen the best response.0
PV=nRT v is directly proportional to T hence it creases.
 one year ago

Mashy Group TitleBest ResponseYou've already chosen the best response.0
correct.. so now.. match the options.. for AB section!!
 one year ago

Mashy Group TitleBest ResponseYou've already chosen the best response.0
which options can you eliminate ??
 one year ago

haridas_mandal Group TitleBest ResponseYou've already chosen the best response.0
right extreme which is no 2 in this question.
 one year ago

Mashy Group TitleBest ResponseYou've already chosen the best response.0
dw:1359878043806:dw NOW TELL WHICH OPTION can you eliminate?
 one year ago

haridas_mandal Group TitleBest ResponseYou've already chosen the best response.0
first column second row as it shows pr not constant. and as i have said right top most as the arrow is shown from B to A.( though I am not sure of that)
 one year ago

Mashy Group TitleBest ResponseYou've already chosen the best response.0
the arrow has to be opposite.. now i have marked 4 options dude.. i have called it A B C D.. :P.. so you are saying you can eliminate option C right??.. you are correct .. cause pressure is increasing in that you can also eliminate option A.. so its between option B and D..
 one year ago

haridas_mandal Group TitleBest ResponseYou've already chosen the best response.0
why A? Pr as shown is constant here.
 one year ago

haridas_mandal Group TitleBest ResponseYou've already chosen the best response.0
It was my fault not to show it correctly. Line ab at A is parallel.
 one year ago

Mashy Group TitleBest ResponseYou've already chosen the best response.0
ohhww.. ok ok :).. fine.. so then lets continue with section BC.. what do you think happens?
 one year ago

haridas_mandal Group TitleBest ResponseYou've already chosen the best response.0
It is either isothermal or adiabatic
 one year ago

Mashy Group TitleBest ResponseYou've already chosen the best response.0
yea well.. its very difficult to make out if its an isothermal or adiabatic!! :/.. lets skip that.. and go to CD process!!
 one year ago

haridas_mandal Group TitleBest ResponseYou've already chosen the best response.0
It is ischoric , volume is const.
 one year ago

Mashy Group TitleBest ResponseYou've already chosen the best response.0
correct.. and pressure is decreasing.. so temperature should be decreasing.. time to eliminate one more option.. which one?
 one year ago

Mashy Group TitleBest ResponseYou've already chosen the best response.0
correct.. so now it boils down to whether the BC and DA processes are adiabatic or isothermal.. thats where i really dunno how to find out.. :/.. but in your option B.. the order is opposite.. so if the directions are like that.. then option B can be eliminated right?
 one year ago

haridas_mandal Group TitleBest ResponseYou've already chosen the best response.0
Problem is the correct option given is as B that is the right upper most. and not been explained. Pl help.
 one year ago

Mashy Group TitleBest ResponseYou've already chosen the best response.0
since its reversible maybe .. the direction doesn't matter.. !!!
 one year ago

Mashy Group TitleBest ResponseYou've already chosen the best response.0
you have to look at the curve in AB section.. if the curve is STEEEP .. its an adiabatic.. if the curve is not all that steep.. then its isothermal
 one year ago

Mashy Group TitleBest ResponseYou've already chosen the best response.0
can't draw :P.. http://physics.info/pressurevolume/ check this.. !!
 one year ago

haridas_mandal Group TitleBest ResponseYou've already chosen the best response.0
Ok thanks I shall come back.
 one year ago

Mashy Group TitleBest ResponseYou've already chosen the best response.0
i need to go now.. sorry :(... but ll reply once i am back.. if no one else clears your doubt that is!!
 one year ago
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