Along semi-cylindrical duct has a diameter 1.0m. its base surface can be approximated as black, and heat is supplied from the base at a rate of 1200w/m-. the side surface has an emissivity of 0.4 and is maintained at 375°c. neglecting the end effects, determine the temperature of the base surface (assume the surfaces are opaque, diffuse and gray, and the convection heat transfer is not considered.)

On a average work day more than work place firs are reorted

The mass flow rate of the fluid remains constant in all steady flow process. a)- true b)- false

Afoot bridge is made as a simple deck, 4 m long, with a cross section 2 m (wide) and 20 cm thick, and made of wood. the deck is supported at the two ends. the maximum load allowable on the bridge is 10 tons, provided it is uniformly distributed on the deck. to sense this load, a strain gauge is placed at the center of the bridge and its resistance is monitored. if the sensor has a nominal resistance of 350 s2 and a gauge factor of 3.6, what is the reading of the strain gauge at maximum load? the modulus of elasticity for the wood used in the construction is 10 gpa.