• HOME
  • QUIZ
  • CONTACT US
EXAMIANS
  • COMPUTER
  • CURRENT AFFAIRS
  • ENGINEERING
    • Chemical Engineering
    • Civil Engineering
    • Computer Engineering
    • Electrical Engineering
    • Mechanical Engineering
  • ENGLISH GRAMMAR
  • GK
  • GUJARATI MCQ

Heat and Mass Transfer

Heat and Mass Transfer
If the temperature of a solid surface changes form 27°C to 627°C, then its emissive power changes in the ratio of

270
81
9
3

ANSWER DOWNLOAD EXAMIANS APP

Heat and Mass Transfer
The total radiation from a black body per second per unit area is ________ fourth power of the absolute temperature. This statement is known as Stefan Boltzmann law.

Directly proportional to
Equal to
None of these
Inversely proportional to

ANSWER DOWNLOAD EXAMIANS APP

Heat and Mass Transfer
A heat exchanger with heat transfer surface area A and overall heat transfer coefficient U handles two fluids of heat capacities Cmax and Cmin. The number of transfer units (NTU) used in the analysis of heat exchanger is specified as

U/Cmin
Cmin/U
U.Cmin
U/A.Cmin

ANSWER DOWNLOAD EXAMIANS APP

Heat and Mass Transfer
Reynolds number is the ratio of

None of these
Kinematic viscosity to thermal diffusivity
Energy transferred by convection to that by conduction
Inertia force to viscous force

ANSWER DOWNLOAD EXAMIANS APP

Heat and Mass Transfer
Which of the following is the case of heat transfer by radiation?

Heat received by a person from fireplace
Blast furnace
Heating of building
Cooling of parts in furnace

ANSWER DOWNLOAD EXAMIANS APP

Heat and Mass Transfer
According to Dalton's law of partial pressures, (where pb = Barometric pressure, pa = Partial pressure of dry air, and pv = Partial pressure of water vapour)

Pb = pa + pv
Pb = pa - pv
Pb = pa × pv
Pb = pa/pv

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Heat and Mass Transfer

DOWNLOAD APP

  • APPLE
    from app store
  • ANDROID
    from play store

SEARCH

LOGIN HERE


  • GOOGLE

FIND US

  • 1.70K
    FOLLOW US
  • EXAMIANSSTUDY FOR YOUR DREAMS.
  • SUPPORT :SUPPORT EMAIL ACCOUNT : examians@yahoo.com

OTHER WEBSITES

  • GUJARATI MCQ
  • ACCOUNTIANS

QUICK LINKS

  • HOME
  • QUIZ
  • PRIVACY POLICY
  • DISCLAIMER
  • TERMS & CONDITIONS
  • CONTACT US
↑