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The sketch shows a common consumer product called Water Pik. This device uses a motor to drive a piston pump that produces a jet of water (diameter d = 3 mm, temperature T = 10 °C) with a speed of 25 m/s. Estimate the minimum electric power in watts that is required by the device. Hints: (a) Assume that the power is used only to produce the kinetic energy of the water in the jet; and (b) in a time interval ?t, the amount of mass that flows out the nozzle is ?m, and the corresponding amount of kinetic energy is (?mV2/2).
Q. A bridge is to be constructed over a stream having a catchment area = 20 miles 2 partly in plains and partly in hills. Portion in hills has a length of 1.7 miles and fall of 88
Prestressed concrete poles In the past decades, prestressed concrete poles have become popular and have replaced the traditional poles made of timber, steel or reinforced con
Determine what is meant by normally consolidated clay stratum and over-consolidated clay stratum. Draw typical results of consolidation test data to a suitable plot relating the vo
Vertical Curves: When two vertical gradients meet, it is necessary to provide a vertical curve. Two types of vertical curves are used: (a) Summit curve, where the point of
Describe the two fundamental purpose of surveying.
Explain the Activitated Sludge (Aeration Tank)? The activated sludge treatment process is a biochemical oxidation process. Organic solids are stabilized through the oxidation p
What is 'contact pressure'? How does it depend on the type of structure and type of soil? What is 'active zone' in soil? Define it with reference to the pressure bulb concept.
Q. Grouting in segmental linings in tunnels? Grouting is typically carried out under pressure in segmental linings at the time of tunnel construction due to the below reasons:
Q. Permanent Repairs to rail fracture? (i) If the fracture is such that, wide gap A T welding ban be adopted, then the total length of fractured ends to-be cut shall be equal t
The regulations and specifications that followed for compaction works for earth dam in Oman
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