a coffee in a cup is kept on open atmosphere .Allow the heat transfer by conduc

a coffee in a cup is kept on open atmosphere .Allow the heat
transfer by conduction,convection and radiation.among temperature
theoretical(Tth) and temperature measured(Tm), which one is greater?

Question Posted / khusbu123

4 Answers
7000 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

a coffee in a cup is kept on open atmosphere .Allow the heat transfer by conduction,convection and ..

Answer / guest

TEMPERATURE THEORETICAL

Is This Answer Correct ?

1 Yes

0 No

a coffee in a cup is kept on open atmosphere .Allow the heat transfer by conduction,convection and ..

Answer / mithilesh rane

Tth will be greater than Tm

Is This Answer Correct ?

0 Yes

0 No

a coffee in a cup is kept on open atmosphere .Allow the heat transfer by conduction,convection and ..

Answer / parmod

But why will there be difference in theoretical and practical temperatures.......what are the assumptions??

Is This Answer Correct ?

0 Yes

0 No

a coffee in a cup is kept on open atmosphere .Allow the heat transfer by conduction,convection and ..

Answer / karthik

Ans: Conduction

Since, the loss of temperature from the surface to the surrounding is less as the area(surface) exposed is less. If it was in a plate it would've been convection as the area exposed in this case will definitely be large...

Ex/Expt: The Coffee cools down very rapidly when the cup is placed/surrounded by cold water.... This proves that conduction process is taking place at a higher rate than convection.

Is This Answer Correct ?

1 Yes

3 No

Post New Answer

More Mechanical Engineering Interview Questions

Hello there, Im a Mechanical Engineer. I passed out in 2010 and have worked for 6 months in the Middle East as a Trainee Engineer. Im now in India and due to appear for an Interview for a firm in the Middle East. The post is of an Automobile Engineer. Im kinda nervous as to what to prepare for the interview. The training which I got was in different areas ranging from technical to managerial aspects. What I mean to say is that that was more of a crash training, where I couldn't stick to one section alone. The interview which Im attending is more of a technical one. What I would like to know, how and what I should be preparing? I have two weeks for the preparation. Should I go through the normal automobile aspects or everything in random. PS: I have excellent communication skills, the one area in which I'm very confident.

0 Answers

What type of Voltage should be in the Resistance Welding. Should it be High or Low & Why?

1 Answers

What do you do when in your duty, ME alarm oil mist detect high density?

0 Answers

What are orthotropic materials ?

0 Answers

will stress be induced in a material if it expands freely???

3 Answers Bhel, HAL, TCS,

How to reduce prodction assembly time ?

2 Answers

if you say any object having a certain mass must be on the surface of the earth due to gravity, but how come gas molecules even after having a certain mass in atm. temperature and pressure not able to stay on ground.

2 Answers

why we can't use condensate pump in place of feed pump.

1 Answers Hindalco,

why a diesel generator gives less fuel consumption which has a mechanical governer compared to auto governor

1 Answers L&T,

How to calculate IKW (inputkilowatt) ie.. efficiency of a airconditioning chiller plant capacity of 310TR

0 Answers Carrier,

What would be the COP of a chiller having capacity of 750 TR and IKW is 0.6 KW/TR

2 Answers

Can anyone suggest me how to learn Computational Fluid Dynamics? (I am just a beginner.)

0 Answers

For more Mechanical Engineering Interview Questions Click Here