Difference between the open and closed systems, Mechanical Engineering

Assignment Help:

Provide short answers to the following questions:

a)   What the necessary condition for a heat transfer process to occur?

b)   What is a difference between the steady state conditions and the thermal equilibrium state?

c)   Is it possible for the steady state temperature profile in a plane wall to be nonlinear at steady state? If yes, provide one example.

d)   Why do you feel cooler during a windy day than during a calm day even though the air temperature is the same?

e)   Why it is more likely to get burn by putting a bare hand into boiling water at 100oC then into hot air at 200oC?

f)   What is a temperature gradient within an object sitting in a room in which the temperature is maintained constant after a sufficiently long time?

g)   Is it possible that the surface temperature of the object from part f) to be different than the room air temperature? If yes, please explain why?

h)   What is the primary reason for a ground frost (air temperature is greater than zero)? For a given air temperature, is ground frost more likely to occur at windy or calm conditions?

i)    What is a difference between and opaque and semitransparent object?

j)    What is the primary reason for the surfaces of different objects to be different when they exposed to sunlight?

k)   What is the difference between the open and closed systems?

l)    What is the inherent difference between application of conservation of energy over a time interval and at an instant of time?

m)  Why the form of the energy balance for a surface of an object at steady and unsteady state conditions is the same?

n)   What is the primary reason irreversible operation of the actual heat engines?

o)   What is the effect of the power output of the actual heat engine on its efficiency? Please explain.


Related Discussions:- Difference between the open and closed systems

PRODUCTION PLANNING & CONTROL, PRODUCTION PLANNING & CONTROL Assignment 2 ...

PRODUCTION PLANNING & CONTROL Assignment 2 Kid style, International, makes furniture designed for children. Its most popular items are large and small toy boxes. Demand for toy

Heat loss in cylindruical pipe, Explain which laws of physics are used to d...

Explain which laws of physics are used to discuss heat loss in a pipe, and briefly explain how the famous equation for the loss of heat in a cylindrical pipe is derived. Explain th

Ladder slip, ladder slip: A uniform ladder having length of 7m rests ...

ladder slip: A uniform ladder having length of 7m rests against vertical wall with which it makes an angle of 45º, coefficient of friction between ladder and wall is 0.4 and

Shear force and bending moment of simply supported beam., #questicalculatio...

#questicalculation of shear fon\rce and bending moment..

Heat transfer, an elctric current is passed through a wire 1mm in diameter ...

an elctric current is passed through a wire 1mm in diameter and 10mm long. the wire is submerged in liquid water at atmospheric pressure and current is increased until the water bo

Explain the scope of thermodynamics in thermal engineering, State the scope...

State the scope of thermodynamics in thermal engineering. Thermal engineering is a very significant associate branch of mechanical, chemical, environmental, aerospace, marine,

Molding sand , which are the different types of molding sands?explain each

which are the different types of molding sands?explain each

Calculate the maximum stress, Determine the analytical solution for the max...

Determine the analytical solution for the maximum stress in the member shown. Submit screen shots that show the shape of the elements that result with a global element size of 0.15

Show construction subcontractor responsibilities, Q. Show Construction Subc...

Q. Show Construction Subcontractor Responsibilities? The Supplier or Construction Subcontractor is responsible for: • Employing qualified PMI technicians • Performing PMI

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd