- Film
- Nucleate
- Transition
- All of the above
1 Answers
Call
Talk Doctor Online in Bissoy App
Even though heat transfer co-efficients in boiling liquids is large, use of fins is advantageous, when the entire surface is exposed to __________ boiling.?
Answer: Option 1 Let'
1 Answers 1 views
When warm and cold liquids are mixed, the heat transfer is mainly by?
Answer: Option 2 Let'
1 Answers 2 views
When the mixture to be distilled has a very high boiling point and the product material is heat sensitive, the separation technique to be used is __________ distillation.?
Answer: Option 2 Let'
1 Answers 1 views
Fourier's law of heat conduction is (where Q = Amount of heat flow through the body in unit time, A = Surface area of heat flow, taken at right angles to the direction of heat flow, dT = Temperature difference on the two faces of the body, dx = Thickness of the body, through which the heat flows, taken along the direction of heat flow, and k = Thermal conductivity of the body)?
Answer: Option 1 Fourier's law of heat conduction is k. A. (dT/dx) where Q = Amount of heat flow through the body in unit time, A = Surface area of heat...
1 Answers 1 views
The depth of centre of pressure (h) for a vertically immersed surface from the liquid surface is given by (where IG = Moment of inertia of the immersed surface about horizontal axis through its centre of gravity, A = Area of immersed surface, and x = Depth of centre of gravity of the immersed surface from the liquid surface)?
Answer: Option 4 Let'
1 Answers 1 views
Trouton's ratio is given by (where λb, = molal heat of vaporisation of a substance at its normal boiling point, kcal/kmol Tb = normal boiling point, °K )?
Answer: Option 1 Troutons rule states that for most of the liquid the entropy of vaporisation is constant at boiling points and the entropy of vaporisation is given by ratio...
1 Answers 1 views
Fouling factor for a heat exchanger is given by (where, U₁ = heat transfer co-efficient of dirty surface U₂ = heat transfer co-efficient of clean surface)?
Answer: Option 2 Let'
1 Answers 1 views
The relation among various mass transfer co-efficients (M.T.C) for ideal gases is given by (where, Kc & Km are M.T.C. for equimolar counter diffusion with concentration & mole fraction respectively as the driving force. and, Kp = M.T.C. for diffusion of a gas through a stagnant inert gas with pressure as driving force.)?
Answer: Option 3 Let'
1 Answers 1 views
Controlling heat transfer film co-efficient is the one, which offers __________ resistance to heat transfer.?
Answer: Option 3 Let'
1 Answers 1 views
Which of the following forced convection heat transfer equation accounts for the liquid viscosity effect for viscous liquids?
Answer: Option 2 Let'
1 Answers 1 views