Acarbon/epoxy (as/3501) unidirectional laminate with a fiber orientation q = 30° is exposed to the following stresses, sx = 40 ksi, sy = -20 ksi, txy = 20 ksi. determine the engineering strains in the fiber coordinate system. use the following typical properties for carbon/epoxy e1 = 18.4 msi, e2 = 1.6 msi, g12 = 0.95 msi, n12 = 0.28.

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

Apiping systems consists of 6 m of 6-std type k and 12 m of 4-std type k, both drawn copper tubing. the system conveys ethylene glycol at a rate of 0.013 m3/s. the pressure drop across the system is to be calculated. there are two 90° elbows in the 6-in pipe, a reduction from the 6-in pipe to the 4-in pipe and four 90° elbows in the 4-in pipe. all fittings are soldered (same as flanged) and regular. the inlet and outlet of the system are at the same height.

Which one of the following faults cause the coffee in a brewer to keep boiling after the brewing cycle is finished? a. an open circuit in the heating element b. a short circuit at the terminals c. welded contacts on the thermostat d. a leak around the gasket