Thermodynamics For ISRO | by Praveen Kulkarni Sir

Hello. Yes.

We'll start in 2 minutes.

What?

Hello.

Hello. Hello. Can you hear me?

Hello. Hello. Can you hear?

Hello. Hello. Can you hear?

Yeah. Yeah. Yeah. Uh so uh one student

asked why only thermodynamics? So I

scheduled this class on YouTube 4 days

back. I was uh so I was the first one to

schedule on YouTube but I don't know

what happened to be honest. I have no

idea.

So as you ask the question I'm

answering. So I scheduled with a plan

long back but I don't know what

happened. If you want you can check

also. I scheduled first it was

thermodynamics

okay yes definitely I'll come up with

different subjects definitely because I

teach around 15 subjects so don't worry

so I'll be teaching uh maximum so don't

worry max yes

uh chundran batch you know it is

starting on just I'll take 1 minute this

is starting on 4th

June Ml from

tomorrow and all the educators will take

classes on

this the subject division like

internally. So we'll try our level

best or be comprehensive manner neatly

neatly neatly in a neat manner. Okay. So

the batch is starting.

Is everything

fine? Are we fine? Are we fine? Very

good. Strong network connect. Don't

worry. So

uh 2

minutes because I

changed. Yeah. Thank you for your

faith.

Maxible. I'll see that.

Now is it

fine? Fine. Very good.

Now the main aim of these classes is

like you know chendra and batch

systematically I'm

cover syllabus comprehensively in four

months 3 to four months because

examination will be somewhere in the

month of November

December from my sources I came to

know but we don't know but we'll see

that 3 4 months possible neatly Wherever

concepts are required

discuss like wherever concepts are

required

discuss but on YouTube it depends

availility we'll give our best but

availability depend confirm so that we

have we have to take but this depends on

our availability okay that's what I uh

meant

Okay.

Right.

So to tomorrow, tomorrow we are starting

the batch 4th June. So please uh

sequentially

subject. Okay. Right.

Now today what is my plan for this

YouTube sessions? They go I will not do

pqs because pqs is your headache

sir. Pyqs means already questions people

will give

solutions practice that you should

practice. So what am I going to do? So

after seeing all

questions different questions different

in the sense which we can expect and

practice and you when you see some new

questions which ideas so that is the

main

aim. What is your

doubt? What is your doubt? What is your

doubt?

Ashu Kumar. What is your doubt?

Please clarify my doubt.

currently attending classes day at an

academy. I'm currently doing uh studying

for a job as technical assistant. So I

don't know what kind of study I should

do. Please tell me. Okay. Okay. So per

technical

assistant number you message me I'll

give you one source so that you you can

contact easy to

find.

Okay.

Connect. Shall we

sit? Okay.

Right. Please note on that

P second to

confidence

questions

or Yes. Yes. Yes.

I

think take this

question. So wherever it is required

I'll do it

sir. Okay.

Right. Theory I will give you. Do you

want theory? What do you want? You tell

me. Do you want a bit of

theory? But

paper group form a

group. Do you want theory or

directly? Directly to

basics. Wherever it is required, I'll

give you. Wherever it is required, I'll

give you. Will it be okay? Wherever it

is required, I'll give you ch. Huh? Take

this. D-Q and D-W are the heat and work

interactions of the system. One more

thing I'm telling you in some questions.

What I have done is I have linked some

concepts so that three four questions

can be framed that

question. I don't think that lengthy

questions simple questions simple in the

question. D-Q and D-W are the heat and

work interactions of the system with the

surroundings and DU is the change in

internal energy for an ideabetic process

in a closed system. Constant pressure

combuster the process is constant

pressure and closed system adiabetic

constant pressure combuster take which

of the following is correct whenever it

is a closed system can I write dash q is

equal to du plus d-w whenever it is a

closed system I can easily write this

equation now ideatic process sir

questions question sir not pqs I will

not do pqs pq is

Now what is dd- q? 0. Why it is zero?

Because anyone because it is adabetic.

It is du plus d-w. Excellent s. So du

can be written as minus d-w. Excellent

s.

Now if I take modulus of both what will

happen? du is equal to dw. Excellent.

and process already the heat transfer is

zero. Already heat transfer is zero and

dash is equal to d because when the

process is going on definitely there

will be some internal energy. So

constant pressure

work sir. Closer system constant

pressure work. So what is the answer

sir?

S delta a

triangle. There are different notations.

There are different

notations. Inexact

differential that is a big difference.

Delta big difference. So answer is what

is it correct sir? Is the answer

D? I say questions

possibility. I take this please

answer please

answer a closer system undergoing a

cycle consists of two reversible

isothermal to theory look at here I'll

give you some

theory dash q is equal to du + d-w you

apply this for closure system and under

what conditions you are applying this

equation when kinetic potential energy

changes are neglected

and closer system. Okay sir, no problem.

No problem. If the process and one more

thing is process for example internal

energy of an ideal gas is a function of

temperature gas law we call it as law.

Internal energy of an ideal gas is a

function of temperature. So if ideal gas

is undergoing isoothermal process, what

will happen to the temperature constant?

When temperature is constant, internal

energy is constant. When internal energy

is constant, the change in internal G is

zero. When the change in internal energy

is zero, heat transfer is equal to what?

Work transfer. He may be asking in which

process the heat transfer is converted

into work transfer. It is isothermal

process. So you may be wondering sir,