an irrigation channel of trapezoidal section, having side slopes 3 horizontal to 2 vertical is to carry a flow of 10 m³/s on a longitudinal slope of 1 in 5000. the channel is to be lined for which the value of friction coefficient in manning's formula is n = 0.012. find the dimensions of the most economic section of the channel​

Steel is coated with a thin layer of ceramic to protect against corrosion. what do you expect to happen to the coating when the temperature of the steel is increased significantly? explain.

Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false

Afour cylinder four-stroke in-line engine has a stroke of 160mm, connecting rod length of 150mm, a reciprocating mass of 3kg and its firing order is 1-3-4-2. the spacing between cylinders is 100mm. i. show that the engine is in balance with regard to the primary inertia forces and primary 3. a and secondary inertia couples. li determine the out of balance secondary inertia force ii. propose ways of balancing this out of balance force and discuss the challenges that will arise