The heat flow equation through a cylinder of inner radius r1 and outer radius r2 is desired to be written in the same form as that for heat flow through a plane wall. For wall thickness (r 2-r 1) the area will be

The heat flow equation through a cylinder of inner radius r1 and oute

1.	The heat flow equation through a cylinder of inner radius r1 and outer radius r2 is desired to be written in the same form as that for heat flow through a plane wall. For wall thickness (r 2-r 1) the area will be
A.	A1 + A2/2
B.	A1 + A2
C.	A2 – A1/ log e (A2/A1)
D.	A1 + A2/2 log e (A2/A1)
Answer» B. A1 + A2

Discussion

No Comment Found

Related MCQs

A stainless steel tube with inner diameter 12 mm, thickness 0.2 mm and length 50n cm is heated electrically. The entire 15 k W of heat energy generated in the tube is transferred through its outer surface. Find the intensity of the current flow
A cylindrical cement tube of radii 0.05 cm and 1.0 cm has a wire embedded into it along its axis. To maintain a steady temperature difference of 120 degree Celsius between the inner and outer surfaces, a current of 5 ampere is made to flow in the wire. Find the amount of heat generated per meter length. Take resistance of wire equal to 0.1 ohm per cm of length
For steady state and a constant value of thermal conductivity, the temperature distribution associated with radial convection through a cylinder is
A cylinder of radius r and made of material of thermal conductivity k 1 is surrounded by a cylindrical shell of inner radius r and outer radius 2r. This outer shell is made of a material of thermal conductivity k 2. Net conductivity would be
The heat flow equation through a cylinder of inner radius r1 and outer radius r2 is desired to be written in the same form as that for heat flow through a plane wall. For wall thickness (r 2-r 1) the area will be
A steel pipe of 20 mm inner diameter and 2 mm thickness is covered with 20 mm thick of fiber glass insulation (k = 0.05 W/m degree). If the inside and outside convective coefficients are 10 W/m2 degree and 5 W/m2 degree, calculate the overall heat transfer coefficient based on inside diameter of pipe. In the diagram, the diameter of small circle is 20 mm
A_STAINLESS_STEEL_TUBE_WITH_INNER_DIAMETER_12_MM,_THICKNESS_0.2_MM_AND_LENGTH_50N_CM_IS_HEATED_ELECTRICALLY._THE_ENTIRE_15_K_W_OF_HEAT_ENERGY_GENERATED_IN_THE_TUBE_IS_TRANSFERRED_THROUGH_ITS_OUTER_SURFACE._FIND_THE_INTENSITY_OF_THE_CURRENT_FLOW?$
A_CYLINDRICAL_CEMENT_TUBE_OF_RADII_0.05_CM_AND_1.0_CM_HAS_A_WIRE_EMBEDDED_INTO_IT_ALONG_ITS_AXIS._TO_MAINTAIN_A_STEADY_TEMPERATURE_DIFFERENCE_OF_120_DEGREE_CELSIUS_BETWEEN_THE_INNER_AND_OUTER_SURFACES,_A_CURRENT_OF_5_AMPERE_IS_MADE_TO_FLOW_IN_THE_WIRE._FIND_THE_AMOUNT_OF_HEAT_GENERATED_PER_METER_LENGTH._TAKE_RESISTANCE_OF_WIRE_EQUAL_TO_0.1_OHM_PER_CM_OF_LENGTH?$
For steady state and a constant value of thermal conductivity, the temperature distribution associated with radial convection through a cylinder i?
A cylinder of radius r and made of material of thermal conductivity k 1 is surrounded by a cylindrical shell of inner radius r and outer radius 2r. This outer shell is made of a material of thermal conductivity k 2. Net conductivity would be

The heat flow equation through a cylinder of inner radius r1 and outer radius r2 is desired to be written in the same form as that for heat flow through a plane wall. For wall thickness (r 2-r 1) the area will be

Discussion

No Comment Found

Related MCQs

Reply to Comment