• 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
The critical thickness of insulation for a sphere is

k/h₀
2k/h₀
h₀/k
h₀/2k

ANSWER DOWNLOAD EXAMIANS APP

Heat and Mass Transfer
The use of heat exchangers is made in

Condensers and boilers in steam plants
Condensers and evaporators in refrigeration and air conditioning units
Radiators in automobile
All of these

ANSWER DOWNLOAD EXAMIANS APP

Heat and Mass Transfer
The expression Q = ρ AT4 is called

Joseph-Stefan equation
Stefan-Boltzmann equation
Fourier equation
Newton Reichmann equation

ANSWER DOWNLOAD EXAMIANS APP

Heat and Mass Transfer
In free convection heat transfer transition from laminar to turbulent flow is governed by the critical value of the

Prandtl number, Grashoff's number
Grashoff's number
Reynold's number, Grashoff's number
Reynold's number

ANSWER DOWNLOAD EXAMIANS APP

Heat and Mass Transfer
Two long parallel surfaces each of emissivity 0.7 are maintained at different temperatures and accordingly have radiation heat exchange between them. It is desired to reduce 75% of the radiant heat transfer by inserting thin parallel shields of emissivity 1 on both sides. The number of shields should be

Two
Four
Three
One

ANSWER DOWNLOAD EXAMIANS APP

Heat and Mass Transfer
In regenerator type heat exchanger, heat transfer takes place by

Generation of heat again and again
Direct mixing of hot and cold fluids
Flow of hot and cold fluids alternately over a surface
A complete separation between hot and cold fluids

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
↑