## THERMODYNAMICS INTRODUCTION MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS

THERMODYNAMICS INTRODUCTION MULTIPLE QUESTION ANSWERS (MCQ) WITH ANSWERS  MCQ on Thermodynamics increases deep understanding as well as clarity. It will be helpful in applying the basic principals in real practical applications.   Temperature is a (a) Derived quantity (b) Supplementary quantity © Fundamental quantity (d) None ANS: © A closed thermodynamic system involves the use…

## AIR STANDARD CYCLES-INTRODUCTION & OTTO CYCLE CLASS NOTES

AIR STANDARD CYCLES- INTRODUCTION & OTTO CYCLE CLASS NOTES Gas power cycles produce power. Analysis is complex and confusing.  Use assumptions to make the analysis simple. These assumptions help in better understanding. More assumptions cause more deviations from actuality. Otto cycle is a gas power cycle. Petrol engines use Otto cycle. It has two isentropic…

## STEAM ENGINES & TURBINES CLASS NOTES FOR MECHANICAL ENGINEERING

https://mesubjects.net/wp-admin/post.php?post=14522&action=edit   MCQ St Turnbines  https://www.mesubjects.net/wp-admin/post.php?post=3681&action=edit          Steam Nozzles https://www.mesubjects.net/wp-admin/post.php?post=3613&action=edit    Q. ANS. S Turbine STEAM ENGINE & TURBINE CLASS NOTES FOR MECHANICAL ENGINEERING    Steam engine works with steam made in the boiler. It converts heat energy of steam into mechanical motion.  A steam engine uses Rankine cycle ( modified Carnot Cycle) and is thus…

## NOZZLE AND DIFFUSER CLASS NOTES FOR MECHANICAL ENGINEERING

NOZZLE AND DIFFUSER CLASS NOTES FOR MECHANICAL ENGINEERING  It is a passage of variable cross section (area decreases from entrance onward). Velocity increases and pressure decreases. This is true as long as velocity at the inlet of the nozzle is sub-sonic.  Velocity is less the velocity of sound or Mach number <1.  Diffuser is a…

## MAXWELL RELATIONS AND EXACT DIFFERENTIALS CLASS NOTES

MAXWELL RELATIONS AND EXACT DIFFERENTIALS CLASS NOTES Natural Variables The variables kept constant in a process are the natural variables of that process. Thermodynamic potential are a function of its natural variables only.  Partial derivatives of that potential with respect to its natural variables determine the thermodynamic properties. Partial derivatives of that potential cannot determine…

## NON FLOW AND FLOW PROCESSES CLASS NOTES FOR ENGINEERING

NON FLOW AND FLOW PROCESSES CLASS NOTES FOR ENGINEERING Both non flow & flow processes play an important role in thermodynamics. These are part of various thermodynamic cycles. Cycles are power producing & power consuming. 1. Non Flow Processes The boundary of a non-flow process can be fixed, moving or imaginary. These are compression…

## NOZZLES MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS

NOZZLES MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS    MCQ significantly increase the understanding of the nozzle. More MCQ will further increase the knowledge about the nozzle. Nozzle converts pressure energy into kinetic energy. Nozzles are convergent, divergent and convergent-divergent types. There is velocity increase and pressure decrease in a convergent nozzle. There is velocity decrease…

## CARNOT CYCLE MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS

CARNOT CYCLE MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS  MCQ help in better understanding. Carnot Cycle is a most efficient power producing cycle. It has two isentropic and two isothermal processes. In the Carnot Cycle, equations are there for the change of entropy in a process. Every process in nature is irreversible. Entropy increases due to…

## THERMODYNAMIC PROCESSES MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS

THERMODYNAMIC PROCESSES MULTIPLE CHOICE QUESTIONS (MCQ) WITH ANSWERS  MCQ increases understanding and clarity. It helps in using the concepts in real life applications. 1. A vapor becomes a gas as long as degree of super heat is Firstly       < 200C Secondly  < 500C Thirdly      <400C None Ans: (iv) 2.  Which of…

## GASES AND GAS MIXTURES

GASES AND GAS MIXTURES Gas is one of four fundamental states of matter among a solid, liquid, gas and plasma. A pure gas contains only one type of atoms like oxygen gas. Rather it may consist of more than one type of atoms like NO2, CO2 and air. The molecules in a gas are far…