Is it true that charges do not transfer between objects in polarization or conduction?

Is it true that charges do not transfer between objects in polarization or conduction?
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Which form of heat transfer travels the fastest,convection or conduction?

Description : Which form of heat transfer travels the fastest,convection or conduction?

Last Answer : Conductor. A solid object is much better at conducting than gas, that’s why wires are wired. Air has a higher resitance to change, but also changes more than a static object, with different currents and influencing variables like humidity, barometric pressure etc.

The transfer of minerals from top soil to subsoil through soil-water is called? (1) Percolation (2) Conduction (3) Leaching (4) Transpiration

Description : The transfer of minerals from top soil to subsoil through soil-water is called? (1) Percolation (2) Conduction (3) Leaching (4) Transpiration

Last Answer : (3) Leaching Explanation: Leaching refers to the loss of water-soluble plant nutrients from the soil, due to rain and irrigation. As water from rain, flooding, or other sources seeps ... the underground water supply. Mineral nutrients lost from the soil system become unavailable for plant uptake.

The transfer of minerals from top soil to subsoil through soil-water is called? (1) Percolation (2) Conduction (3) Leaching (4) Transpiration

Description : The transfer of minerals from top soil to subsoil through soil-water is called? (1) Percolation (2) Conduction (3) Leaching (4) Transpiration

Last Answer : (3) Leaching Explanation: Leaching refers to the loss of water-soluble plant nutrients from the soil, due to rain and irrigation.

Transfer of heat energy from a heater coil to the cooking vessel takes place through the process of- (1) Convection only (2) Conduction and convection only (3) Radiation and convection only (4) Convection, conduction and radiation

Description : Transfer of heat energy from a heater coil to the cooking vessel takes place through the process of- (1) Convection only (2) Conduction and convection only (3) Radiation and convection only (4) Convection, conduction and radiation

Last Answer : (3) Radiation and convection only Explanation: Conduction is the transfer of heat energy by direct contact, convection is the movement of heat by actual motion of matter; radiation is the transfer of energy with the help of electromagnetic waves.

Heat transfer horizontally within the atmosphere is called – (1) Conduction (2) Convection (3) Absorption (4) Advection

Description : Heat transfer horizontally within the atmosphere is called – (1) Conduction (2) Convection (3) Absorption (4) Advection

Last Answer : (4) Advection Explanation: Convection transfers heat vertically into the atmosphere. In order for heat to be transferred to other regions, it must be transferred horizontally by the wind. The horizontal ... advection is the transport of pollutants or silt in a river by bulk water flow downstream.

Heat transfer in the laminar sub-layer in case of a liquid flowing through a pipe, is mostly by (A) Eddies current (B) Conduction (C) Convection (D) None of these

Description : Heat transfer in the laminar sub-layer in case of a liquid flowing through a pipe, is mostly by (A) Eddies current (B) Conduction (C) Convection (D) None of these

Last Answer : (B) Conduction

The Fourier number (defined as a.t/L 2 ) is used in the analysis of problem involving heat transfer by (A) Forced convection (B) Natural convection(C) Transient conduction(D) Steady state conduction

Description : The Fourier number (defined as a.t/L 2 ) is used in the analysis of problem involving heat transfer by (A) Forced convection (B) Natural convection (C) Transient conduction (D) Steady state conduction

Last Answer : (C) Transient conduction

Fourier's law applies to the heat transfer by (A) Convection (B) Radiation (C) Conduction (D) All (A), (B) & (C)

Description : Fourier's law applies to the heat transfer by (A) Convection (B) Radiation (C) Conduction (D) All (A), (B) & (C)

Last Answer : (C) Conduction

Arithmetic mean area can be used in heat transfer problem to calculate the heat flow by conduction through a cylinder which is (A) Thin walled having the value of Ao Ai /< 2 (B) Thick walled (C) Having the value of Ao /Ai > 2 (D) Both (B) and (C)

Description : Arithmetic mean area can be used in heat transfer problem to calculate the heat flow by conduction through a cylinder which is (A) Thin walled having the value of Ao Ai /< 2 (B) Thick walled (C) Having the value of Ao /Ai > 2 (D) Both (B) and (C)

Last Answer : (A) Thin walled having the value of Ao Ai /< 2

In which mode of heat transfer, the Biot number is important? (A) Transient heat conduction (B) Natural convection (C) Forced convection (D) Radiation

Description : In which mode of heat transfer, the Biot number is important? (A) Transient heat conduction (B) Natural convection (C) Forced convection (D) Radiation

Last Answer : (A) Transient heat conduction

Thermal diffusivity is the most important in heat transfer by (A) Conduction (B) Radiation

Description : Thermal diffusivity is the most important in heat transfer by (A) Conduction (B) Radiation

Last Answer : (A) Conduction

Mode of heat transfer in which the fluid moves under the influence of changes in fluid pressure produced by external work is called (A) Radiation (B) Natural convection (C) Forced convection (D) Conduction

Description : Mode of heat transfer in which the fluid moves under the influence of changes in fluid pressure produced by external work is called (A) Radiation (B) Natural convection (C) Forced convection (D) Conduction

Last Answer : (C) Forced convection

Mode of heat transfer involved in the cooling of air cooled internal combustion engine is (A) Conduction(B) Natural convection(C) Forced convection(D) None of these

Description : Mode of heat transfer involved in the cooling of air cooled internal combustion engine is (A) Conduction (B) Natural convection (C) Forced convection (D) None of these

Last Answer : (B) Natural convection

When warm and cold liquids are mixed, the heat transfer is mainly by (A) Conduction (B) Convection (C) Radiation (D) Both (A) & (C

Description : When warm and cold liquids are mixed, the heat transfer is mainly by (A) Conduction (B) Convection (C) Radiation (D) Both (A) & (C

Last Answer : (B) Convection

If heat transfer rate varies with the time, it is termed as (A) Forced convection (B) Steady state conduction (C) Monochromatic radiation (D) None of these

Description : If heat transfer rate varies with the time, it is termed as (A) Forced convection (B) Steady state conduction (C) Monochromatic radiation (D) None of these

Last Answer : (D) None of these

Heat transfer by conduction in the turbulent core of a fluid flowing through a heated pipe is negligible, if the value of Prandtl number is (A) 0.2 (B) 0.4 (C) 0.6 (D) 0.8

Description : Heat transfer by conduction in the turbulent core of a fluid flowing through a heated pipe is negligible, if the value of Prandtl number is (A) 0.2 (B) 0.4 (C) 0.6 (D) 0.8

Last Answer : (C) 0.6

In case of heat transfer by conduction in a hollow cylinder, __________ mean area is used to calculate the heat transfer rate. (A) Geometric (B) Arithmetic (C) Logarithmic (D) Either (A), (B) or (C)

Description : In case of heat transfer by conduction in a hollow cylinder, __________ mean area is used to calculate the heat transfer rate. (A) Geometric (B) Arithmetic (C) Logarithmic (D) Either (A), (B) or (C)

Last Answer : (C) Logarithmic

View factor is important in heat transfer by (A) Steady state conduction (B) Natural convection (C) Forced convection (D) Radiation

Description : View factor is important in heat transfer by (A) Steady state conduction (B) Natural convection (C) Forced convection (D) Radiation

Last Answer : (D) Radiation

Heat transfer by conduction results due to the transfer of free electrons, kinetic energy & vibrational energy from one molecule to another. Conduction heat transfer cannot take place (A) Between two bodies in physical contact with each other (B) Between two bodies not in physical contact with each other (C) From one part of a body to the another part of the same body (D) Both 'b' & 'c'

Description : Heat transfer by conduction results due to the transfer of free electrons, kinetic energy & vibrational energy from one molecule to another. Conduction heat transfer cannot take place (A) Between two bodies in physical contact ... of a body to the another part of the same body (D) Both 'b' & 'c'

Last Answer : (B) Between two bodies not in physical contact with each other

Pick out the wrong statement. (A) Fluid movement under the influence of buoyant forces resulting from change in density takes place in case of natural convection (B) The ratio NNu /NRe . Npr is called the Stanton number (C) The Peclet number is a measure of the ratio of energy transport by convection to that by conduction (D) The Colburn jH factor for heat transfer is given by Nst Npr

Description : Pick out the wrong statement. (A) Fluid movement under the influence of buoyant forces resulting from change in density takes place in case of natural convection (B) The ratio NNu /NRe . Npr is ... convection to that by conduction (D) The Colburn jH factor for heat transfer is given by Nst Npr

Last Answer : (D) The Colburn jH factor for heat transfer is given by Nst Npr

When the ratio of the Grashoff number and to the square of Reynolds number is one, the dominant mechanism of heat transfer is: (A) Free convection (B) Entry length problem in laminar forced conduction (developing thermal boundary layer) (C) Mixed convection (both free and forced) (D) Forced convection

Description : When the ratio of the Grashoff number and to the square of Reynolds number is one, the dominant mechanism of heat transfer is: (A) Free convection (B) Entry length problem in laminar forced ... (developing thermal boundary layer) (C) Mixed convection (both free and forced) (D) Forced convection

Last Answer : (C) Mixed convection (both free and forced)

Heat transfer by __________ may not necessarily require the presence of a medium. (A) Conduction (B) Natural convection (C) Forced convection (D) Radiation

Description : Heat transfer by __________ may not necessarily require the presence of a medium. (A) Conduction (B) Natural convection (C) Forced convection (D) Radiation

Last Answer : (D) Radiation

Pick out the correct statement. (A) 1 kcal/hr.m.°C is equal to 1 BTU/hr. ft.°F (B) In steady state heat conduction, the only property of the substance which determines the temperature distribution, is the thermal conductivity (C) In unsteady state heat conduction, heat flows in the direction of temperature rise (D) In heat transfer by forced convection, Grashoff number is very important

Description : Pick out the correct statement. (A) 1 kcal/hr.m.°C is equal to 1 BTU/hr. ft.°F (B) In steady state heat conduction, the only property of the substance which determines the ... in the direction of temperature rise (D) In heat transfer by forced convection, Grashoff number is very important

Last Answer : (B) In steady state heat conduction, the only property of the substance which determines the temperature distribution, is the thermal conductivity

In furnaces operating at very high temperature (say) 1250°C, e.g. soaking pit), the maximum heat transfer takes place by (A) Conduction (B) Convection (C) Radiation (D) Cannot be predicted

Description : In furnaces operating at very high temperature (say) 1250°C, e.g. soaking pit), the maximum heat transfer takes place by (A) Conduction (B) Convection (C) Radiation (D) Cannot be predicted

Last Answer : (C) Radiation

Maximum heat transfer in high temperature furnaces is by (A) Conduction (B) Convection (C) Radiation (D) Either (A), (B) or (C); depends on the type of furnace

Description : Maximum heat transfer in high temperature furnaces is by (A) Conduction (B) Convection (C) Radiation (D) Either (A), (B) or (C); depends on the type of furnace

Last Answer : (C) Radiation

Gibbs phase rule finds application, when heat transfer occurs by (A) Conduction (B) Convection (C) Radiation (D) Condensation

Description : Gibbs phase rule finds application, when heat transfer occurs by (A) Conduction (B) Convection (C) Radiation (D) Condensation

Last Answer : (D) Condensation

In a furnace with heating element temperature at 1700°C, the dominant mechanism of heat transfer will be (A) Conduction (B) Radiation (C) Natural convection (D) Forced convection

Description : In a furnace with heating element temperature at 1700°C, the dominant mechanism of heat transfer will be (A) Conduction (B) Radiation (C) Natural convection (D) Forced convection

Last Answer : (B) Radiation

Heat transfer by __________ is almost absent in case of fluidised bed drying operation. (A) Radiation (B) Conduction (C) Convection (D) Both (B) & (C)

Description : Heat transfer by __________ is almost absent in case of fluidised bed drying operation. (A) Radiation (B) Conduction (C) Convection (D) Both (B) & (C)

Last Answer : A) Radiation

Heat transfer to the water wall in a high pressure water wall type boiler furnace is mainly by (A) Conduction (B) Convection (C) Radiation (D) Both 'a' & 'b'

Description : Heat transfer to the water wall in a high pressure water wall type boiler furnace is mainly by (A) Conduction (B) Convection (C) Radiation (D) Both 'a' & 'b'

Last Answer : Option C

reduction in thermal resistance during heat transfer does not occur in the (A) Convection heat transfer by stirring the fluid and cleaning the heating surface (B) Conduction heat transfer by reduction in the material thickness and increase in the thermal conductivity (C) Radiation heat transfer by increasing the temperature and reducing the emissivity (D) None of these

Description : reduction in thermal resistance during heat transfer does not occur in the (A) Convection heat transfer by stirring the fluid and cleaning the heating surface (B) Conduction heat transfer by ... Radiation heat transfer by increasing the temperature and reducing the emissivity (D) None of these

Last Answer : Option C

What refers to the transfer of energy between a solid surface and the adjacent fluid that is in motion?  A. Conduction  B. Convection  C. Radiation  D. Electrification

Description : What refers to the transfer of energy between a solid surface and the adjacent fluid that is in motion?  A. Conduction  B. Convection  C. Radiation  D. Electrification

Last Answer : Convection

____ is the transfer of energy in the form of electromagnetic waves. a. Compulsion c. Convection b. Radiation d. Conduction

Description : ____ is the transfer of energy in the form of electromagnetic waves. a. Compulsion c. Convection b. Radiation d. Conduction

Last Answer : b. Radiation

____ is the transfer of heat from one particle to another by contact. a. Conduction c. Radiation b. Convection d. Combustion

Description : ____ is the transfer of heat from one particle to another by contact. a. Conduction c. Radiation b. Convection d. Combustion

Last Answer : a. Conduction

Explain application of conduction and convection mode of heat transfer in automobile.

Description : Explain application of conduction and convection mode of heat transfer in automobile.

Last Answer : Applications of conduction1. Fins provided on motor cycle engine 2. Electric fuse cut off 3. Electric heater 4. Carbonisation of coal 5. Melting of iron in blast furnace 6. Fission reactions in ... 5. Radiator - Puts warm air out at the top and draws in cooler air at the bottom.

Heat transfer horizontally within the atmosphere is called (1) Conduction (2) Convection (3) Absorption (4) Advection

Description : Heat transfer horizontally within the atmosphere is called (1) Conduction (2) Convection (3) Absorption (4) Advection

Last Answer : Advection

The transfer of minerals from top soil to subsoil through soil-water is called? (1) Percolation (2) Conduction (3) Leaching (4) Transpiration

Description : The transfer of minerals from top soil to subsoil through soil-water is called? (1) Percolation (2) Conduction (3) Leaching (4) Transpiration

Last Answer : Leaching

What is it called when transfer of electrons (resulting in charges)?

Description : What is it called when transfer of electrons (resulting in charges)?

Last Answer : This is an ionic bond.

What is it called when transfer of electrons (resulting in charges)?

Description : What is it called when transfer of electrons (resulting in charges)?

Last Answer : This is an ionic bond.

The rate of transfer of charges through a circuit is called? (1) Potential Difference (2) Resistance (3) Current (4) Energy

Description : The rate of transfer of charges through a circuit is called? (1) Potential Difference (2) Resistance (3) Current (4) Energy

Last Answer : (3) Current Explanation: The rate of transfer of charges through a circuit is called Current. An electric current is the rate of flow of electric charge past a point or region. An electric current is said to exist when there is a net flow of electric charge through a region.

Which of these is an example of a transfer payment? (a) Profit ; (b) Retirement pension ; (c) Rent ; (d) Transportation and freight charges

Description : Which of these is an example of a transfer payment? (a) Profit ; (b) Retirement pension ; (c) Rent ; (d) Transportation and freight charges

Last Answer : ; (b) Retirement pension ;

What method of heat transfer to all objects give out heat their surroundings?

Description : What method of heat transfer to all objects give out heat their surroundings?

Last Answer : Need answer

When two objects are touching and transfer heat is called?

Description : When two objects are touching and transfer heat is called?

Last Answer : Conduction

When two objects are touching and transfer heat is called?

Description : When two objects are touching and transfer heat is called?

Last Answer : Conduction

how do polarization and opinion shift generally work in a decision-making group? -General Knowledge

Description : how do polarization and opinion shift generally work in a decision-making group? -General Knowledge

Last Answer : They depend on the predispositions of the members. -is how polarization and opinion shift generally work in a decision-making group.

Who in 1808 discovered polarization of light and introduced the term ‘Polarization’?

Description : Who in 1808 discovered polarization of light and introduced the term ‘Polarization’?

Last Answer : Answer: Etienne-Louis Malus.

What is polarization ?

Last Answer : Polarization is the division into two opposite or opposing groups or camps.

Polarization of electrons in acrolein may be written as:

Description : Polarization of electrons in acrolein may be written as:

Last Answer : Polarization of electrons in acrolein may be written as: A. `H_(2)overset(delta+)"C"=CH-CH=overset( ... (2)overset(delta-)C=CH-CH=overset(delta+)O`

Polarization of electrons in acrolein may be written as:

Description : Polarization of electrons in acrolein may be written as:

Last Answer : Polarization of electrons in acrolein may be written as: A. `H_(2)overset(delta+)"C"=CH-CH=overset( ... (2)overset(delta-)C=CH-CH=overset(delta+)O`

How did the KKK contribute to the polarization and sectional alignment of political parties in the late nineteenth century?

Description : How did the KKK contribute to the polarization and sectional alignment of political parties in the late nineteenth century?

Last Answer : What is the answer ?

The information of brilliant colors in a thin soap film is a consequence of the phenomena of - (1) Polarization and interference (2) Diffraction and dispersion (3) Multiple refraction and dispersion (4) Multiple reflection and interference

Description : The information of brilliant colors in a thin soap film is a consequence of the phenomena of - (1) Polarization and interference (2) Diffraction and dispersion (3) Multiple refraction and dispersion (4) Multiple reflection and interference

Last Answer : (4) Multiple reflection and interference Explanation: Light waves reflected by the upper and lower boundaries of a thin film interfere with one another, either enhancing or reducing the reflected light.