A. thermal conductivity
B. thermal diffusivity
C. density
D. dynamic viscosity
E. kuiematic viscosity

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Related Mcqs:

  1. Thermal conductivity of air with rise in temperature__________________?
    A. increases B. decreases C. remains constant D. may increase or decrease depending on temperature E. none of the above...
  2. Thermal conductivity of solid metals with rise in temperature normally___________________?
    A. increases B. decreases C. remains constant D. may increase or decrease depending on temperature E. unpredictable...
  3. Thermal conductivity of water in general with rise in temperature ____________________?
    A. increases B. decreases C. remains constant D. may increase or decrease depending on temperature E. none of the above...
  4. Thermal conductivity of air at room temperature in kcal/m hr °C is of the order of__________________?
    A. 0.002 B. 0.02 C. 0.01 D. 0.1 E. 0.5...
  5. The value of Prandtl number for air is about _______________________?
    A. 0.1 B. 0.3 C. 0.7 D. 1.7 E. 10.5...
  6. Heat transfer takes place as per ________________?
    A. zeroth law of thermodynamics B. first law of thermodynamic C. second law of the thermodynamics D. Kirchoff’s law E. Stefan’s law...
  7. In heat transfer, conductance equals conductivity (kcal/hr/sqm/°C/cm) divided by ________________?
    A. hr (time) B. sqm (area) C. °C (temperature) D. cm (thickness) E. kcal (heat)....
  8. The ratio of heat flow Q1/Q2 from two walls of same thickness having their thermal conductivities as ATj – 2K2 will be ________________?
    A. I B. 0.5 C. 2 D. 0.25 E. 4.0...
  9. Thermal conductivity of glass-wool varies from sample to sample because of variation in ________________ ?
    A. composition B. density C. porosity D. structure E. all of the above...
  10. According to Wien’s law, the wavelength corresponding to maximum energy is proportion to ________________?
    A. absolute temperature (T) B. I2 C. f D. t E. 1/r...
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