Answer / hi

second law of thermodynamics is a kelvin-planks statement
it states that the heat cannot transfer from cold temp to
high temp without any external workdone

Answer / gurmeet.mech

Clausis statement: it is impossible to construct an engine
which will transfer the heat from low temperature sink to a
higher temerature source.

Kelvin statement: It is impossible to construct an engine
which will do any work by operating between the same
temerature sources.

Answer / sreekesh s

for a spontaneous(natural) process the entropy always
increases.

Answer / karthick

clausius statement--heat cannot be transferred from cold
body to hot body without any external source

100% efficiency is not possible from any machines

Answer / bandi srinivas

It is impossible that heat can't flow from lower temp. to
higher temp. without any external agency.

Answer / rakesh nagdev

The second law of thermodynamics is an expression of the
universal law of increasing entropy, stating that the
entropy of an isolated system which is not in equilibrium
will tend to increase over time, approaching a maximum
value at equilibrium.

For more info visit following link,

http://en.wikipedia.org/wiki/Second_law_of_thermodynamics

Answer / sornakumar

charles statement 'the engine cant design the available
heat energy fully converted into work with out loss '
kelvin statement" the heat cant flow itself from cold
region to hot region without adding work.

Answer / prasadsurendranaik

it is impossible to take energy from sink to source unless
use of externnal force

whenever you operate a heat engines between same sourse &
sink it has same efficiency

Answer / biswajit pradhan

hello friend

the second law of thermodynamics consisting of a 4 to 5
corollary so plz refer thermal engg for all the details.
thanQ

Answer / hari prasad

It is impossible to construct a device that operates in a
cycle and produces no
effect other than the removal of heat from a body at one
temperature and the
absorption of an equal quantity of heat by a body at a
higher temperature.

how to calculate the turbine efficiency?

1 Answers  

what is the exams to be conducted for mechanical engineers and then how to prepare that

0 Answers  

Why tampering to be done?

0 Answers   Essar,

What is the purpose of a setting tank?

1 Answers  

The advantage of a controllable pitch propeller?

2 Answers   RRB,

What are the causes of damage of diesel engine exhaust Valve?

1 Answers   RRB,

hi friends, i want to know full depth of regarding mechanical seals

1 Answers  

Can I use IS 2062 GR B Material for low temperature application upto -20 C ?

0 Answers  

what is threaded joints ,where present usage ?

0 Answers   Kirloskar,

How do you weld 25 mm thick plate?

11 Answers   Bhel, Essar,

What is the function of "Speed Governor" in steam turbine? How it works?

3 Answers   TVS,

how control valve works? process line pressure is 50kg/cm2g and instrument air pressure is about 4 kg/cm2g.

0 Answers