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Tej replied | 10/08/2015

Yes the first law expresses the general law of conservation of energy. and states that heat and work are mutually convertible

Heat In = Work Out over complete cycle
or Sum (d Q ) = sum (d W )

Over a complete cycle the algebraic sum of the quantities of heat supplied to a system is equal to the algebraic sum quantities of work performed by the system i.e.

In...  more»
Yes the first law expresses the general law of conservation of energy. and states that heat and work are mutually convertible

Heat In = Work Out over complete cycle
or Sum (d Q ) = sum (d W )

Over a complete cycle the algebraic sum of the quantities of heat supplied to a system is equal to the algebraic sum quantities of work performed by the system i.e.

In a cyclic process any property of the system are the same at the end of a cycle as at the beginning. Throughout the path of a cycle (?Q - ?W) represents a change in the total stored internal energy property of the system ?E . The basic energy equation results from this

?Q = ?E + ?W

The total stored internal energy E includes for various forms of energy including

the various forms of potential energy (gravity, magnetic, electrical)
thermal energy
chemical energy
atomic energy
kinetic energy
surface tension energy

Note: In classical thermodynamics as applicable to mechanical engineering the atomic energy and the chemical energy are not considered....

E = U + P.E + K.E + S.E

P.E = total potential energy, K.E = total kinetic energy, S.E = total surface energy . The intrinsic internal energy U is the total internal energy minus the energies of motion, gravitational, magnetic and surface forces energies . The first law can be written using U as

?Q = ?U + ?W «less

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Virendra replied | 13/08/2015

Yes according to the first law of thermodynamics heat is convertable to work.
Take the example of IC engine the heat energy is converted into mechanical work in the engine cylinder.

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Anil replied | 30/12/2015

Thermodynamic equilibrium is equilibrium of rate of flow of heat transfer whereas thermal equilibrium is stable state of temperature

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Shivanand replied | 04/03/2016

thermal equilibrium is a concept related with equilibrium of bodies related with temptrature.and thermodynamic equilibrium is related with the equilibrium of bodies with respect to thermo properties such as pressure,temptrature,volumeetc.

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Love replied | 01/03/2016

3000-5000 as per subject

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Mohan replied | 02/03/2016

4000 per subject is good amount if you a take hour wise 300

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Pavan replied | 21/09/2015

Write a if condition that checks each and every index of string with 1 until u reach null termination . If the condition is true then increase the value of count variable by one. Count variable must be declared at the beginning of the program. At last print the count variable. That's it. Have fun with programs.

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Prashanth replied | 14/02/2016

Rotate right or left 8 times thriugh carry and check the flag each time...

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Raviteja 14/07/2015 in  BTech Tuition

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Abhishek replied | 22/07/2015

AIEE not AEE.......
Keep motivated - meet friends who are serious too and share your progress and problems faced.

Find good teachers who can help
I have seen http://www.askiitians.com and they seem pretty decent for online doubt clearance.

Join a Test series - a national test...  more»
AIEE not AEE.......
Keep motivated - meet friends who are serious too and share your progress and problems faced.

Find good teachers who can help
I have seen http://www.askiitians.com and they seem pretty decent for online doubt clearance.

Join a Test series - a national test series like Brilliant tutorials or Resonance. This will tell you in advance if you are failing.
Find right theory books.
Brilliant and Vidyamandir books are not up to the mark for theory. Brilliants has a good but limited set of questions for practice. Vidyamandir questions I have not checked.

I recommend following books
Physics: HC Verma
Maths: Arihant publications are decently good (I came across lot of errors though)
Inorganic chemistry: I dont know the latest books
Physical Chemistry: P. Bahadur
Organic chemistry: Arihant «less

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Vishvanand replied | 06/02/2016

Yes you can But first tell me what is your engineering branch.

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Vipin 11/07/2015 in  BTech Tuition

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Uman replied | 28/07/2015

No, it can't be negative. but if you are finding difference between two entropy then your result can be negative.

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Vankata Sai replied | 07/08/2015

Entropy change of universe can never be negative but entropy change of system might be negative depending on process. entropy is randomness or disorder associated with molecules so there is nothing like negative randomness so there could be some randomness or no randomness.

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Manjula 12/07/2015 in  BTech Tuition

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Prashanth replied | 17/02/2016

yeah w3schools

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Rushikesh replied | 27/03/2016

w3school, tutorialpoint are good resources for anything basics related to Web Technologies.

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Srinivas 06/07/2015 in  BTech Tuition

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Rohit replied | 13/07/2015

There are basically 4 laws that characterize thermodynamic system
1) Zeroth law - If two systems are in thermal equilibrium respectively with a third system, they must be in thermal equilibrium with each other.
2) 1st law - When energy passes, as work, as heat, or with matter, into or out from a system, its internal energy changes in accord with the law of conservation...  more»
There are basically 4 laws that characterize thermodynamic system
1) Zeroth law - If two systems are in thermal equilibrium respectively with a third system, they must be in thermal equilibrium with each other.
2) 1st law - When energy passes, as work, as heat, or with matter, into or out from a system, its internal energy changes in accord with the law of conservation of energy.
3) 2nd law - the sum of the entropies of the interacting thermodynamic systems increases in a natural thermodynamic process.
4) 3rd law - he entropy of a system approaches a constant value as the temperature approaches absolute zero. «less

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Vikas replied | 13/07/2015

There are 4 laws in Thermodynamics:
Zeroth Law: It was named zeroth law since it should be preceded the first and the second laws of thermodynamics.it serves as a basis for the validity of temperature measurement.It's a fact that is obvious become one of the law of Thermodynamics.
First law: Basis for conservation of Energy.
Second law: Basis for direction of flow...  more»
There are 4 laws in Thermodynamics:
Zeroth Law: It was named zeroth law since it should be preceded the first and the second laws of thermodynamics.it serves as a basis for the validity of temperature measurement.It's a fact that is obvious become one of the law of Thermodynamics.
First law: Basis for conservation of Energy.
Second law: Basis for direction of flow of energy.
Third law of thermodynamics: provides absolute reference point for the determination of entropy. «less

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Arun replied | 20/07/2015

Check yourself whether you have the interest to work with numbers, logics and application oriented mathematics. If you have, Go ahead.The stuffs you have learned in your schooling is enough to proceed.

Research on different career options available for a B.Tech CS graduate. This will build your objectives and interest that let you to automatically find what you have to...  more»
Check yourself whether you have the interest to work with numbers, logics and application oriented mathematics. If you have, Go ahead.The stuffs you have learned in your schooling is enough to proceed.

Research on different career options available for a B.Tech CS graduate. This will build your objectives and interest that let you to automatically find what you have to learn.

Enjoy the course. All the Best ... «less

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Sobhana replied | 20/07/2015

Computer fundamentals, basic programming language and communication skills.

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Ashutosh replied | 03/08/2015

Michael Corral- vector calculus and Erwin Kreyzig- Advanced Engineering Mathematics and Thomas and finney- Calculus.. hope it will help

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Kavya replied | 31/03/2016

B S Grewal

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Suresh replied | 29/06/2015

Hi ,this is Suresh. If you want I will teach vlsi and digital electronics.

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Abita replied | 29/06/2015

I am done B.tech in electronics and communications and confident to provide tuition for VLSI.

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Saswat 31/05/2015 in  BTech Tuition

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Shweta replied | 08/06/2015

You have to prepare for UPSC Civil services. Only then u can be shortlist for IPS/IAS/IFS

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Chirag replied | 05/03/2016

Civil Services exam.

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Srinivas 20/05/2015 in  BTech Tuition

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Ravi replied | 27/05/2015

Per subject 4,500, completion of syllabus.

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Chandra Sekhar replied | 27/05/2015

per month

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Nitish replied | 25/06/2015

In pass by value new variable is created during function call whose size is equal to the size of actual variable.but in pass by reference a pointer is created to hold the address of actual variable. The size of the pointer is about 4-8 byte only which overcome the overhead of pass by value. So we can say pass by reference optimize function call.

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Shaheen Bano replied | 22/07/2015

pass by value means we are passing a a copy of the value of each argument is passed to the function;and passed by referance means we are passing an address to a function.

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Anvesh 11/05/2015 in  BTech Tuition

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Saurabh replied | 02/08/2015

Always use singular verb with it and with many always use plural verb.

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Murty replied | 23/02/2016

Each of a large number of

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Sundeep replied | 13/07/2016

Minimum 6k can ask upto anywhere around 10k (6k-10k)

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SMART FUTURE POINT replied | 23/07/2016

5k at smart future point offline classes and online for Rs 500 per hour only

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Eliyazer replied | 24/01/2016

both of them are plasmids with unequal configurations

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Parth replied | 13/02/2016

12

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Priyanka 19/04/2015 in  BTech Tuition

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Pramod replied | 06/05/2015

Ratio of voids in a volume to total volume.

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Sandeep replied | 24/06/2015

It is ratio of vol of void to the vol of solid.......it's range is e>0.....it can't be 0 because vol of void is never 0.....for coarse grain soil e>1 & for fine grain soil e<1 generally.

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Anvesh 17/04/2015 in  BTech Tuition

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Chary replied | 25/11/2015

past incidents are useful to learn lessons so that mistakes are not repeated. future incidents are based on present actions.It is always better to live in the present with proper planning to have a good future.

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Subhash replied | 16/02/2016

Learn from your past. If present is good, future will be better, but don't sacrifiy your present for making best future. Balance both.

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Manisha replied | 27/07/2015

All these materials are classified on the basis of forbidden energy gap between conduction band and valence band. In conductor ,conduction band is fully filled with electrons. In insulator ,valence band is fully filled and does't contribute to create an electric current. In semi conductor, conduction and valence band are partially filled.

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Pramod replied | 11/02/2016

On the basis of energy band diagram and the conduction of charge carriers from one band to another.

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Akshay replied | 19/05/2015

Dont copy and paste

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Abhishek replied | 19/10/2015

Electrical power can easily be transformed in other form , or it can be retrieved by various technologies availabe in the world

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Abhishek replied | 19/10/2015

Because rotor conductors carry currents only if there i a relative speed between stator field and rotor field , if it will run on synchronous speed then induced emf in rotor conductors will be zero and rotor currents will also be zero then motor will not run at all

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Jayakrishna replied | 05/01/2016

if the speed of the rotor reaches to synchronous speed then other is no relative speed between the rotor and stator field hence no e.m.f and hence no current. due to this no torque to maintain rotation. that is the reason for IM always runs below synch speed.

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Aalok replied | 12/12/2015

unbalanced voltage leads to negative sequence voltage and in turn negative sequence current which leads to a flux opposite to the normal one and in turn an emf in the rotor and this leads to negative sequence current which is very high and enough to burn rotor windings.

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Marri replied | 13/12/2015

current will draw more in the circuit in which voltage is less and finally motor will get over heated and burnt or fuse will get blown off

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Venkat replied | 11/09/2015

DC drives are free from electromangnetic Induction and controlled electronically by the logic controllers which can be monitored remotely by software .DC drives are robust and less heat generators there by efficiency is more

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Jayakrishna replied | 05/01/2016

in DC drives that to shunt machinesre having constant speed characteristics that means almost their speed is independent of load

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Surai 11/04/2015 in  BTech Tuition

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T.vasundhara Devi replied | 22/02/2016

refer : IS:1893:2000.
IS:4326.
IS:456:2000
Reinforced hand book by Reynold

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Boom replied | 11/08/2016

Building or Bridges?

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