A. thermal resistance
B. thermal coefficient
C. temperature gradient
D. thermal conductivity
E. heat-transfer
Correct Answer: thermal conductivity ✔
Last Updated: January 24, 2019
Related MCQs
- A grey body is one whose absorptivity__________?
- The rate of energy emission from unit surface area through unit solid angle, along a normal to the surface, is known as __________?
- In convection heat transfer from hot flue gases to water tube, even though flow may be turbulent, a laminar flow region (boundary layer of film) exists close to the tube. The heat transfer through this film takes place by__________?
- Unit of thermal diffusivity is__________?
- Film coefficient is defined as Inside diameter of tube__________?
- Thermal conductivity of wood depends on__________?
- Thermal diffusivity is __________?
- Moisture would find its way into insulation by vapour pressure unless it is prevented by __________ ?
- Heat transfer by radiation mainly depends upon__________?
- Which of the following has maximum value of thermal conductivity__________?
- The amount of heat flow through a body by conduction is__________?
- Heat flows from one body to other when they have__________?
- Which of the following has least value of conductivity__________?
- Thermal conductivity of glass-wool varies from sample to sample because of variation in __________ ?
- According to Prevost theory of heat exchange __________?
- Thermal diffusivity of a substance is __________?
- The ratio of heat flow Q1/Q2 from two walls of same thickness having their thermal conductivities as ATj – 2K2 will be __________?
- Heat is transferred by all three modes of transfer, viz, conduction, convection and radiation in __________?
- Thermal conductivity of a material may be defined as the__________?
- Which of the following is expected to have highest thermal conductivity__________?
- In heat transfer, conductance equals conductivity (kcal/hr/sqm/°C/cm) divided by __________?
- The time constant of a thermocouple is__________?
- Thermal conductivity of water at 20°C is of the order of__________?
- Total heat is the heat required to__________?
- Thermal conductivity of air with rise in temperature__________?
- Thermal conductivity of air at room temperature in kcal/m hr °C is of the order of__________?
- Cork is a good insulator because it has__________?
- Metals are good conductors of heat because__________?
- Temperature of steam at around 540°C can be measured by __________?
- Thermal conductivity of water in general with rise in temperature __________?
- Which of the following is a case of steady state heat transfer __________?
- Which of the following is the case of heat transfer by radiation __________?
- Heat flowing from one side to other depends directly on __________?
- Heat transfer in liquid and gases takes place by__________?
- Unit of thermal conductivity in S.I. units is__________?
- When heat is Transferred by molecular collision, it is referred to as heat transfer by __________?
- Sensible heat is the heat required to __________?
- Thermal conductivity of solid metals with rise in temperature normally__________?
- When heat is transferred from one particle of hot body to another by actual motion of the heated particles, it is referred to as heat transfer by __________?
- Unit of thermal conductivity in M.K.S. units is __________?
- Thermal conductivity of non-metallic amorphous solids with decrease in temperature __________?
- The insulation ability of an insulator with the presence of moisture would__________?
- Heat is closely related with__________?
- When heat is transferred form hot body to cold body, in a straight line, without affecting the intervening medium, it is referred as heat transfer by __________?
- Heat transfer takes place as per __________?