A pump must suck a well as deep as 20 m, water temperature 25 ° C, how the arrangement puts the pump depth so that water can be pumped perfectly, count and use the required table

1. A turbo pump works at 1200 rpm rotation, with the ability to raise water as high as 200 m as much as 650 liters / minute, which is driven by an electric motor. But because the electric voltage should be 220 volts decreased so that the pump shaft spindle only 1000 rpm with the character of the pump. The pump efficiency assumption is 85%.

a. How much power is needed if the voltage is still normal 220 volt.

b. With the actual condition of the pump turn down to 1000 rpm how much water can be drained if water remains to be raised as high as 200 m.

c. How much water can be raised if the amount of water remains as much as 650 liters / minute.

d. What is the power requirement in the actual condition.

A piston–cylinder device initially contains 2 kg water in 1 m3 at 500 kPa. The system then cools down and the volume drops to half and pressure of 300 kPa. At this state, the piston is resting on a set of stops, and the mass of the piston is such that a pressure of 500 kPa is required to move it. (a) Show the process on a P-v, T-v and P-T diagrams with respect to saturation lines and determine, (b) the final temperature, (c) the work done during this process, and (d) the total heat transfer. full step plz

Question 2

a) List and describe the five processes that cause wear at the interface of the tool and chip and the interface of tool and work in machining. What are the two major factors which enhance tool wear mechanisms? Explain in detail.

b) List and describe the three main processes that cause grinding wheel wear. Define Grinding Ratio and explain in detail, the relationship between grinding ratio, surface finish, and wheel speed using a plot.

Question 3

a) In an Electrochemical Machining process, the feedstock is made of an aluminium alloy (Ultimate Tensile Strength = 572 MPa, Tensile Yield Strength = 503 MPa). The desired time to machine a hole (?=10 mm) through a 20 mm-thick part is 2.1 min at a feed rate of 0.18 mm/s. What are:

(i) the efficiency of the process in %, and

(ii) the current requirement in amps to achieve this machining time target?

b) Describe in detail the process of circular sawing with the aid of a freehand sketch. What are the two major mechanisms by which circular sawing is achieved and what materials are commonly used as circular saws of each type?

Question 3

a) In an Electrochemical Machining process, the feedstock is made of an aluminium alloy (Ultimate Tensile Strength = 572 MPa, Tensile Yield Strength = 503 MPa). The desired time to machine a hole (?=10 mm) through a 20 mm-thick part is 2.1 min at a feed rate of 0.18 mm/s. What are:

(i) the efficiency of the process in %, and

(ii) the current requirement in amps to achieve this machining time target?

b) Describe in detail the process of circular sawing with the aid of a freehand sketch. What are the two major mechanisms by which circular sawing is achieved and what materials are commonly used as circular saws of each type?

1)Why we want to choose 1-2 heat exchange
2) Benefits of using many tubes in the heat exchange
3) material use for tube
4)shell tube
5) why we use 1 inch two pass
6) the length of tube we use is 6ft
7)U tube - Coose BEU and AEU
8)tube sheet
9) buffle

Question 4)

a) Explain in some detail the meaning of thermal radiation. Your answer should include the difference between radiation from other forms heat transfer.

b) What is the stefan-Boltzmann law. How does this relate to the heat transfer by radiaion?

themes of gas metal arc welding...
I need by report....
so give me like that

pleasee give more details about that you can take 5 hour

How can I make calculations and design a toy car running at a speed of 10m/s and which should cover a maximum distance of 30m? The design should consist of springs, gears, shafts, rack, and pinion. Urgent help needed.

Air at 1 atm flowing at a rate of 0.1 kg / s has to be cooled from 400 to 300K in a tube of 10 cm in diameter with a uniform wall temperature of 250 K. Determine the length of the tube.

The United States has a lot of federally owned land. Unfortunately, uncontrolled natural forest fires destroy large areas in the western US every summer. In 2002, about 1,000,000 acres of standing timber in national forests were consumed. Some consideration is being given to improved management practices that could produce electric power from residual forest thinning. Estimate the lost energy content of burned US forests during 2002. Assuming the US average electricity demand is about 300,000 MW e , how much forested land would be needed to produce all the country ’ s power? Is this a sustainable alternative? How would you manage the forest lands needed? A few facts to consider: the total forested area on US federal lands in the lower 48 states is about 600 million acres with a standing stock density of about 100 dry metric tonnes of wood per acre. Woody plants and trees capture solar energy via photosynthesis at an average rate of about 0.8 W/m 2 , which corresponds to producing about 5 – 10 dry tons of biomass per acre annually with an average heating value of 8000 BTU/dry lb. Note that 1 acre = 43,560 ft 2 = 0.405 hectare = 4047 m 2 and the average heat-to-work conversion efficiency of a biomass-fired electric power plant is about 35%.

Derive the critical fiber volume fraction with respect to strength and explain what is it.

single cylinder naturally aspirated engine (CNG) on engine performance based on high-speed high load comparison with baseline conditions early ignition late ignition and rich and lean PV graph and p theta comparison how to do with results (already obtained) comparing emissions, MFB ( 10 % 50% 90%).......Analysis if it's more or less the values how to analyze the basic comparisons for eg baseline vs high speed vs high load if the values are more why is it?

rich and lean comparisons what happens AT TDC early and late ignition ...what happens to the parameter change