In hydraulic systemsthe mechanical energy is transferred to the compressed air and then converted into mechanical energythe mechanical energy is transferred to the oil and then converted into mechanical energythe electrical energy is transferred to the oil and then converted into mechanical energythe mechanical energy is transferred to the oil and converted into electrical energyO O

In hydraulic systems the mechanical energy is transferred to the compressed air and then converted into mechanical energy the mechanical energy is transferred to the oil and then converted into mechanical enery the electrical energy is transferred to the oil and then converted into mechanical energy the mechanical energy is transferred to the oil and converted into electrical energy

In hydraulic systems the mechanical energy is transferred to the compressed air and then converted into mechanical energy the mechanical energy is transferred to the oil and then converted into mechanical enery the electrical energy is transferred to the oil and then converted into mechanical energy the mechanical energy is transferred to the oil and converted into electrical energy

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Hot water at a constant volumetric flow rate of Fh and temperature Th(t) is mixed with cold water at a constant volumetric flow rate of Fc and a constant temperature of Tc. Both streams flow into a bathtub, but because of carelessness, the water is overflowing and keeping the bathtub full of water. The bathtub volume is V, and the heat loss can be ignored. Assuming the water in the bathtub is perfectly mixed and constant density and heat capacity, derive the differential equation relating the temperature in the bathtub, T(t), to the temperature of the hot water, Th(t).
A pump takes water at 60°F from a large reservoir and delivers it to the bottom of an open elevated tank 25 ft above the reservoir surface through a 3 inch ID pipe. The inlet to the pump is located 10 ft below the water surface, and the water level in the tank is constant at 160 ft above the reservoir surface. The pump delivers 150 gal/min. If the total loss of energy due to friction in the piping system is 35 ft·lbf/lb. The pump and its motor have an overall efficiency of 55 %. i.Let us set our first point at the surface of the large reservoir, and the second point at the surface of the open elevated tank. Determine the velocity of the water at point 1 in ft/s. ii.What is the density of water at the conditions stated in lb/ft3? iii.If 1 horsepower is equivalent to 500 (ft-lbf)/s, the pump should be able to supply how much hp?
Answer in English Units
2. An air-conditioning system requires air flow at the main supply duct at a rate of 180 m³/min. The average velocity of air in the circular duct is not to exceed 10 m/s to avoid excessive vibration and pressure drops. Assuming the fan converts 70 percent of the electrical energy it consumes into kinetic energy of air, determine the size of the electric motor needed to drive the fan and the diameter of the main duct. Take the density of air to be 1.20 kg/m3. Note that Air Power of the fan is give by: AP = Qy Ah Where: Q = volume flow rate of air m3/s, y = specific weight of air, kN/m³, Ah = pressure head, m Ans: 618 mm 180 m/min 10 m/s
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How does a hydraulic system work and what are some of its applications?
What is the change in internal energy when compressing air in an insulated cylinder from 0.2m3 to 0.01m3. Use t1=20C P1 = 100kPa (K)
A pump takes water at 60°F from a large reservoir and delivers it to the bottom of an open elevated tank 25 ft above the reservoir surface through a 3 inch ID pipe. The inlet to the pump is located 10 ft below the water surface, and the water level in the tank is constant at 160 ft above the reservoir surface. The pump delivers 150 gal/min. If the total loss of energy due to friction in the piping system is 35 ft·lbf/lb, Calculate the horsepower required to do the pumping. The pump and its motor have an overall efficiency of 55 %. i. Determine the velocity of the water at point 2 in ft/s. ii. Assuming that the large open reservoir is open to the atmosphere as well, which of the following equations best describes the mechanical energy balance for the system? iii.The Reynolds number for the flow is?
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Fluid Mechanics
6.
Water is to be pumped from the bottom of a well 20 ft deep with a specific heat of 1 BTU/lbm F is pumped using a 1-hp jet pump. Heat is lost from the whole system at the constant rate of 500 BTU/min. What is the temperature (℉) of the water as it enters the storage tank assuming that the well water is at 35℉?