Heat Transfer Questions

Q.  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 ___________________?

a. conduction
b. convection
c. radiation
d. conduction and convection
e. convection and radiation


ANSWER: See Answer
 
No explanation is available for this question!
MCQs:  Heat is transferred by all three modes of transfer, viz, conduction, convection and radiation in _________________?
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MCQs:  The ratio of heat flow Q1/Q2 from two walls of same thickness having their thermal conductivities as ATj – 2K2 will be ________________?
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MCQs:  Thermal diffusivity of a substance is ____________________?
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MCQs:  According to Prevost theory of heat exchange ___________________?
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MCQs:  Thermal conductivity of glass-wool varies from sample to sample because of variation in ________________ ?
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MCQs:  Which of the following has least value of conductivity_________________?
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MCQs:  Heat flows from one body to other when they have_________________?
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MCQs:  The amount of heat flow through a body by conduction is_______________?
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MCQs:  Which of the following has maximum value of thermal conductivity________________?
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MCQs:  Heat transfer by radiation mainly depends upon___________________?
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MCQs:  Moisture would find its way into insulation by vapour pressure unless it is prevented by __________________ ?
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MCQs:  Thermal diffusivity is ____________________?
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MCQs:  Thermal conductivity of wood depends on_______________?
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MCQs:  Film coefficient is defined as Inside diameter of tube________________?
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MCQs:  Unit of thermal diffusivity is_________________?
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MCQs:  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___________________?
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MCQs:  The rate of energy emission from unit surface area through unit solid angle, along a normal to the surface, is known as ________________?
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MCQs:  A grey body is one whose absorptivity_________________?
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MCQs:  Heat conducted througfi unit area and unit thick face per unit time when temperature difference between opposite faces is unity,is called__________________?
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MCQs:  Two balls of same material and finish have their diameters in the ratio of 2 : 1 and both are heated to same temperature and allowed to cool by radiation. Rate of cooling by big ball as compared to smaller one will be in the ratio of____________________?
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