Related MCQs

• In case of solid cylinder of radius R, the temperature distribution is given as
• The maximum temperature for cylindrical coordinate occurring at r = 0 is
• For a cylindrical rod with uniformly distributed heat sources, the thermal gradient at half the radius location will be
• Consider a convective heat flow to water at 75 degree Celsius from a cylindrical nuclear reactor fuel rod of 50 mm diameter. The rate of heat generatioN is 50000000 W/m3 and convective heat transfer coefficient is I kW/m2 K. The outer surface temperature of the fuel element would be
• A slab of 12 cm thickness and generating heat uniformly at 10 6 W/m3 has thermal conductivity of 200 W/m degree. Both surfaces of the slab are maintained at 150 degree Celsius. Determine the heat flow rate at the quarter planes
• A concrete column used in bridge construction is cylindrical in shape with a diameter of 1 meter. The column is completely poured in a short interval of time and the hydration of concrete results in the equivalent of a uniform source strength of 0.7 W/kg. Determine the temperature at the center of the cylinder at a time when the outside surface temperature is 75 degree Celsius. The column is sufficiently long so that temperature variation along its length may be neglected. For concreteAverage thermal conductivity = 0.95 W/m KAverage density = 2300 kg/m3
• The constants of integration are to be determined from the relevant boundary conditions which are(i) t = t w at r = R(ii) q g (π L R2) = -k (2 π R L) (d t/d r)(iii) Increasing temperature gradientChoose the correct option?
• A 25 mm diameter egg roll (k = 1 W/m degree) is roasted with the help of microwave heating. For good quality roasting, it is desired that temperature at the center of roll is maintained at 100 degree Celsius when the surrounding temperature is 25 degree Celsius. What should be the heating capacity in W/m 3 of the microwave if the heat transfer coefficient on the surface of egg roll is 20 W/m2 degree?
• THE_MAXIMUM_TEMPERATURE_FOR_CYLINDRICAL_COORDINATE_OCCURRING_AT_R_=_0_IS?$
• In_case_of_solid_cylinder_of_radius_R,_the_temperature_distribution_is_given_as$