Which type of hitch consists of two or more vertical hitches attached to the same hook, and allows the slings to be connected to the same load without the use of a spreader beam?
O Basket hitch
O Bridle hitch
Block-and-tackle hitch
O Double-leg chain hitch

The characteristic roots of a dynamic system are: 1.7920 1.8160 i, -1.7920 1.8160 i, -0.4160 what is the order of this system? what are the settling time and damping ratio of the system?

Air enters a horizontal, constant-diameter heating duct operating at steady state at 290 k, 1 bar, with a volumetric flow rate of 0.25 m°/s, and exits at 325 k, 0.95 bar. the flow area is 0.04 m2. assuming the ideal gas model with k = 1.4 for the air, determine (a) the velocity at the inlet and exit, each in m/s, and (c) the rate of heat transfer, in kw flow rate, in kg/s, (b) the mass kg 0.3

List 3 options on how to reduce knocking problens during engine process,