A10 m^2 plane-wall with a thickness of 1m dissipates heat to ambient air through its two surfaces on the left and right, respectively. the thermal conductivity of the wall is = 20 w/m*k . the convection heat transfer coefficient at its external surface ℎ = 20 w/(m^2)k . the measured surface temperature is 50 °c. the ambient air temperature is 0 ℃. (1) draw a schematic figure of this wall and have all parameters known clearly presented; (2) find the heat dissipated from this wall to ambient air; (3) find the maximum temperature within this wall;

The y form of iron is known as: a) ferrite b) cementite c) perlite d) austenite

Asingle-geared blanking press has a stroke of 200 mm and a rated capacity of 320 kn. a cam driven ram is assumed to be capable of delivering the full press load at constant force during the last 15 percent of a constant-velocity stroke. the camshaft has an average speed of 90 rev/min and is geared to the flywheel shaft at a 6: 1 ratio. the total work done is to include an allowance of 16 percent for friction a) estimate the maximum energy fluctuation b) find the rim weight for an effective diameter of 1.2 m and a coefficient of speed fluctuation of 0.10

Which of the following refers to refers to how well the control system responds to sudden changes in the system. a)-transient regulation b)- distributed regulation c)-constant regulation d)-steady-state regulation