Water is being pumped from a large lake to a reservoir 25 m above at a rate of 25 L/s by a 10-kW (shaft) pump. If the irreversible head loss of the piping system is 5 m, determine the mechanical efficiency of the pump.

Q: Derive an expression for the work done by a system in a non-cyclic process.

A: The process is called non-cyclic if the endpoint and the starting point is not the same. Let us take…

Q: A Carnot Engine has an efficiency of 50% and the temperature of its cold reservoir is 150 °G. Find…

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Q: "For an isolated system, the mechanical work will be completely converted into thermal energy" True…

A: The statement , "For an isolated system, the mechanical work will be completely converted into…

Q: A 1650 kg car accelerates at a rate of 4.0m/s squared. How much is the cars engine producing?

A: As per the question, it is given that mass of the car is m and acceleration of the car is a, we have…

Q: At a hydroelectric power plant, the water pressure head is at a height of 300 m and the water flow…

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Q: Which of the following would result to an increase in the Carnot efficiency of a heat engine? O The…

A: Heat transfers from warm to cold place ideally. Heat engines transfers heat from cool to warm…

Q: In large buildings, hot water in a water tank is circulated through a loop so that the user doesn’t…

A: The expression for the volume flow rate,   Substitute,

Q: Calculate the blade length of a wind turbine rotor which produces a maximum power of 5 MW at a wind…

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Q: *** A right circular cylindrical tank of depth 12 ft. and radius 4 ft. is half full of oil weighing…

A: The given tank is in the shape of a right circular cylinder with radius, r=4 ft, and depth, h= 12…

Q: Consider these scenarios and state whether work is done by the system on the environment (SE) or by…

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Q: The heart is supplied with 5 L/min of blood from the superior vena cava at point 1, which has a…

A: It is given that, the heart is supplying blood at a rate of 5L/min. The diameter of the input panel…

Q: 2) The pump of a water distribution system is powered by an electric motor whose efficiency is 80%…

A: nelectrical= Mechanical work of motorElectrical energy input to motor=0.8nshaft= Mechanical work…

Q: Water enters the pump of a steam power plant as saturated liquid at 20 kPa at a rate of 45 kg/s and…

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Q: | 1. A horizontal cylindrical tank of length 15 m and diameter 2 m is half-full of water. How much…

A: As per our policy, we can answer only the first problem.

Q: Problem 3 A circular swimming pool has a diameter of 8 meters. The sides are 4 meters high and the…

A: Consider a layer of water at a distance x meters from the top of the pool Weight of the layer of…

Q: Derive an expression for the work done by a system in a cyclic process.

A: For a cyclic process internal energy is zero,

Q: 7.69 The energy grade line for steady flow in a uniform-diameter pipe is shown. Which of the…

A: Energy Gradient Line (EGL) EGL is the graphical representation of sum of static pressure head and…

Q: a powerful and extremely reliable pump. Each day it takes in and discharges about 7500 L of blood.…

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Q: A spherical tank of diameter 4 m is half-full of water (weight density = 9800 N/m³). Setup the…

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Q: An oil pump is drawing 44 kW of electric power while pumping oil with r = 860 kg/m3 at a rate of 0.1…

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Q: Why do we not use brakes with more than 80% efficiency in automobiles? What should be the minimum…

A: we do not use brakes with more than 80% efficiency in automobiles

Q: A spherical tank of diameter 4 m is half-full of water (weight density = 9800 N/m³). Setup the…

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Q: A pump operating at 1170 rpm discharges 2000 gpm at a total head of 109 feet. If the pump speed…

A: Given data The initial operating rotational speed of the pump is N1 = 1170 rpm. The initial…

Q: our client is planning to drain their swimming pool and decided to pump it until it drained. A two…

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Q: A spherical tank of diameter 4 m is half-full of water (weight density = 9800 N/m³). Setup the…

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Q: When energy is conserved, it has a tendency to increase a total energy during the process, thus it…

A: No, total energy is conserved , so total energy can not be increases during the process.

Q: An oil pump is drawing 25 kW of electric power while pumping oil with r = 860 kg/m3 at a rate of 0.1…

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Q: A swimming pool is 20 m long and 10 m wide, with a bottom that slopes uniformly from a depth of 1 m…

A: Given,

Q: An open tank has the shape of a right circular cone. The tank is 8 feet across the top and 6 feet…

A: Consider, a disk of thickness dy at the pumped distance as shown below. Using similar triangle…

Q: As a result of friction between internal parts of an isolated system a, the kinehic energy of the…

A: Mechanical energy is the sum of kinetic and potential energy of an object.

Q: A pump is used to lift 500kg of water from a depth of 80m in 10s. Calculate: (a) The work done by…

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Q: A hydro electric power station takes its water from a lake whose water level is 50m above the…

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Q: A pump handling a liquid raises its pressure from 1 bar to 30 bar. Take the density of the liquid as…

A: Given:Fluid Density  ρ=990 kg/m3Pressure at Initial P1=1 barPressure at Final  P2=30 bar

Q: An engine pumps up 100 kg of water through a height of 10 m in 5 second. If the efficiency of the…

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Q: Which of the following is NOT an energy component of a flowing fluid? 5. Enthalpy: Flowing Fluid;.…

A: (5)Enthalpy is a flowing fluid which do motion where as internal energy is a non flowing fluid. So…

Q: A Carnot engine has a thermal efficiency of 0.60. The temperature of the hot reservoir is 800 K and…

A: A Carnot engine has a thermal efficiency, η=0.60 The temperature of the hot reservoir, TH = 800 K…

Q: A water pump delivers 6 hp of shaft power when operating. If the pressure differential between the…

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Q: Consider a pond with three types of fish. 1) N1= 100, M1-1 lb 2) N2=30, M2-3 Ib 3) N3-10, M3=7 lb…

A: MW is the weight averaged molecular weight. Mathematically, it is given by MW = ∑Ni Mi2∑Ni Mi We use…

Q: A bathroom extractor fan being sold on Amazon has a duct diameter of 10.0 cm. It extracts air from a…

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Q: If a load of 460N was lifted by an effort of 144 N. The distance by the effort is 60 m movement. The…

A: Load = 460 N Effort = 144 N distance moved by effort = 60 m distance moved by the load = 19 m

Q: In the figure, let one unit of pressure be equal to 1 Pa and one unit of volume be equal to 1 m^3.…

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Q: Compute the work done against gravity by a pump that discharges 600 L of fuel oil into a tank 20 m…

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Q: Water falls over a dam of height h with a mass flow rate of IV , in units of kilograms per second.…

A: Given Data: Height = h Mass flow rate = IV Solution: The power is the rate of flow of energy…

Q: When gasoline is burned, it gives off 46,000 J/gram of heat energy. If an automobile uses 13.0 kg of…

A: Given : Heat energy given off when gasoline is burned = 46000 J/gram Gasoline used by an automobile…