Home
PDF Store
Exams
G.K.
Aptitude
Reasoning
English
Computer
Biology
Privacy
About
Contact
Home
All MCQ
Exams
PDF Store
G.K.
Aptitude
Reasoning
English
Computer
Biology
Privacy
About
Contact
Earn $100 Online Daily just answering survey. Click Here
What is the correct answer?
4
The ratio of surface convection resistance to the internal conduction resistance is known as
A.
Grashoff number
B.
Biot number
C.
Stanton number
D.
Prandtl number
Related Questions
The logarithmic mean temperature difference (tm) is given by (where Δt1…
A designer chooses the values of fluid flow rates and specific heats in…
A heat exchanger with heat transfer surface area A and overall heat transfer…
The unit of overall coefficient of heat transfer is
An electric cable of aluminium conductor (k = 240 W/mK) is to be insulated…
A grey body is one whose absorptivity
The critical temperature is the temperature
Thermal conductivity of water ________ with rise in temperature.
Thermal diffusivity of a substance is
The heat transfer from a hot body to a cold body is directly proportional…
The rate of energy transferred by convection to that by conduction is…
Emissivity of a white polished body in comparison to a black body is
Depending on the radiating properties, a body will be black when
Which of the following has least value of conductivity?
Which of the following is the case of heat transfer by radiation?
According to Prevost theory of heat exchange
Thermal diffusivity is
The amount of radiation mainly depends on
The heat transfer by conduction through a thick sphere is given by
According to Stefan Boltzmann law, ideal radiators emit radiant energy…
Heat transfer by radiation mainly depends upon
Two long parallel surfaces each of emissivity 0.7 are maintained at different…
Two balls of same material and finish have their diameters in the ratio…
Stefan Boltzmann law is applicable for heat transfer by
The thermal diffusivities for solids are generally
The critical radius is the insulation radius at which the resistance to…
Two plates spaced 150 mm apart are maintained at 1000°C and 70°C.…
The rate of energy emission from unit surface area through unit solid…
The ratio of the thickness of thermal boundary layer to the thickness…
Heat is closely related with
Also checkout
Data Sufficiency MCQ
Nuclear Chemistry MCQ
Problems on Numbers MCQ
Botany and Human Welfare MCQ
Metabolism MCQ
Course of Action MCQ
Chemical Process MCQ
Php Programming MCQ
IBPS Common Written Exam (PO/MT) Main 2016 Solved Paper MCQ
Java Programming MCQ
Urologic problems in pregnancy MCQ
Angiosperms (Taxonomy and Classification) MCQ