Water is pumped from a lake to a storage tank 18 m above at a rate of 70 l/s while consuming 20.4 kw of electric power. disregarding any frictional losses in the pipes and any changes in kinetic energy, determine (a) the overall efficiency of 232 bernoulli and energy equations the pump–motor unit and (b) the pressure difference between the inlet and the exit of the pump.

Coiled springs ought to be very strong and stiff. si3n4 is a strong, stiff material. would you select this material for a spring? explain.

Afull journal bearing has a journal diameter of 27 mm, with a unilateral tolerance of -0.028 mm. the bushing bore has a diameter of 27.028 mm and a unilateral tolerance of 0.04 mm. the l/d ratio is 0.5. the load is 1.3 kn and the journal runs at 1200 rev/min. if the average viscosity is 50 mpa-s, find the minimum film thickness, the power loss, and the side flow for the minimum clearance assembly.

Which of the following components of a pid controlled accumulates the error over time and responds to system error after the error has been accumulated? a)- proportional b)- derivative c)- integral d)- on/off.