dQ-dW=1 which of the law is obeyed by the equation
Answers were Sorted based on User's Feedback
Answer / justahelper
The first law tells us that energy is neither created nor
destroyed i.e cyclic integral of dQ should be equal to
cyclic integral of dW about a closed cycle
Then, the 2nd law clarifies this relation by specifying that
heat HAS to be rejected in the conversion of heat to work
and all heat supplied cannot be converted to work, some heat
will be stored as internal energy
Hence, dQ-dW=1 means dW work is done out of dQ and the
remaining 1 is the increase in internal energy. Hence, 2nd
law is obeyed here.
Is This Answer Correct ? | 19 Yes | 0 No |
Answer / sornakumar
dQ/dW=1 THIS is the first law of thermodyanamics
Is This Answer Correct ? | 10 Yes | 5 No |
Answer / sneha more
if the eqn is for process then it obeys first law.
dQ-dW=1 dU=1
if eqn is for cycle then it obeys second law
since,
dQ & dW should not be equal
Is This Answer Correct ? | 2 Yes | 2 No |
Answer / ronnie
answer #5 is correct.
here dQ = 1-dW so
dQ is not equal to dW
hence second law of thermodynamics is obeyed....
Is This Answer Correct ? | 2 Yes | 2 No |
Answer / anil kumar satri
first law of thermodynamics
for open system dq = dw
so dq-dw=1
dq= dw
Is This Answer Correct ? | 0 Yes | 13 No |
anybody having idea about bel interview questions for mechanical,
State fresh water generation plant made water flow.
0 Answers Marine Engines and Systems,
types of stainless steel.why does this called stainless.what is passivation related to SS? What is sensitisation in stainless? Examples of diffrent type of steel e.g. austenatic,martensite,ferritic etc. 304,303,316. How to get rid of carbide formation in SS and stablization in SS.(347 etc.)Different type of heat treatments. Iron carbon diagram. Nelson chart with respect to corosion. Diffrent type of corosion and causes. Carbon equvalent number. Welding related questions.(requirement of post and pre heating in welding). welding of SS. If you have pre experience in maintenance then Material and welding related questions will be there. Then various types equipment in plant (a) static (b) rotatic in pumps and compressor,turbines funda of balance drum and balance disc, balancing line. Impulse wheel, wheel chamber pressure and its effect on turbone health if this increases. Thermal expansion of turbines and with respect to how foundation bolting are designed. Fixing of lower casing before dismantling. Most important shaft alignment and balancing of rotating equipment,classification of static and rotatic equpment used in process plants. Materials for diffrent services as refinery plants fertilizer plants, cement plants, sulphur plants, crude oil with higher sulphur services, then third important thing is codes, standards and recommended practices of diffrent organisation like ASTM,ASME,API,TEMA,BIS,IS,ISO,NPFA,OISD etc. diffrent type of work permit systems fire and safety point of view.
What are the flow characteristics?
What is breather frequency of tank?
wer r u coming from ,,,,
can any1 suggest me the books for placement papers.
Cam,Connecting Rod,Piston & Cylinders Combinely forms How many links ?
Respected Sir, I am preparing for J.E of RRB Chennai.Please send me all RRB Chennai solved paper in the year of 2004 to till date. My ID is musini_p@rediffmail.com Thanking you sir, Anand
what is the difrence between goal and target?
why to work in oil industry
Causes of dilution of lubricating oil in a steam turbine?
0 Answers ABC Inc, RRB, Siemens,