A water turbine is placed at the bottom of a hill. It receives Q = 30 m³/s of water from a large lake at the top of the hill. The elevation difference between the turbine and the free surface of the lake is h = 100 m. Water leaves turbine with the speed V₂ = 2 m/s. Head loss in the water supply pipe connecting turbine and the lake is 20 m. Calculate power (in MW) transferred from the water to the turbine.

a.Consider a component (you decide) in an aircraft that is subjected to creep. What standard creep reduction techniques would be best suited?

b.How does temperature affect creep rates and why?

c.Is there a difference between metals and plastics with creep failure?

d.Use the Hunt Library or a preferred one to explain constant stress or constant strain testing for plastics. What time scales are reasonable to test and determine with confidence?

Q.8. Super-heated steam at 875 K is flowing through a thick walled tube of stainless tube with inside diameter 40mm and outside diameter50mm such that its inner wall is heated to a uniform temperature of 875K.To reduce heat loss, the tube is lagged with 30mm layer of asbestos insulation k=0.2 W/m.K. Calculate the heat loss using the electrical analogy per metre length if the outer surface temperature of the insulated tube is 350K.Thermal conductivity of steel=19 W/m.k.

0.2 kg/s of moist air at 45oC (DBT) and Humidity ratio 0.006 kgw/kgda (dry air) is mixed with 0.3 kg/s of moist air at 250C (DBT) and a humidity ratio of 0.018 kgw/kg da in an adiabatic mixing chamber. After mixing, the mixed air is heated to a final temperature of 40o C using a heater. Assume the barometric pressure to be 1 atm. Find

Enthalpies of both fluids

Temperature and humidity ratio of air after mixing.

Heat transfer rate in the heater.

Draw the displacement diagram for the motions specified. In each case the length of the diagram is to be 120mm, and unless otherwise stated 30 degree intervals (10mm = 30 degrees) are to be used along theta's axis the height of the diagram is equal to the maximum follower displacement.

a) Rise 3/4in with constant acceleration in 90 degree followed by a rise of 3/4in with constant deceleration in 90 degree.

b) Dwell 30 degree

c) fall 3/4in with constant acceleration 60 degree followed by a fall of 3/4in with constant decceleration in 60 degree

d) Dwell 30 degree

1) The Bay of Fundy-Passamaquoddy area near the border between Maine and New Brunswick/Nova Scotia in Canada, is another prime site for tidal power. The basin area is 700km² and the average tidal range is 10.8 meters. Calculate the theoretical maximum power generating capability and the estimated realistic power available from this site. (SHOW your WORK)

2) A client wants you to design a roof-mounted solar water heater to supplement the energy input to their radiant floor heating system. They would like to have an indirect solar collection system similar to the one shown in Figure 11.16 of your textbook. The south-facing solar collector has a stated efficiency of 41%, and will be used to INDIRECTLY heat water in a supplemental storage tank that has a capacity of 150 Liters (~ 40 gallons). The circulating pump will operate at the rate of 20 x 10^-6 m³/sec. On a typical summer day, there are 5.6 hours of direct sunshine, which creates a 15.5°C temperature rise in the solar collector fluid for that whole time period. Assume the collector fluid is water (heat capacity of 4.184 J/g-°C). What will be the increase in temperature of the water in the storage tank?

1) The Bay of Fundy-Passamaquoddy area near the border between Maine and New Brunswick/Nova Scotia in Canada, is another prime site for tidal power. The basin area is 700km² and the average tidal range is 10.8 meters. Calculate the theoretical maximum power generating capability and the estimated realistic power available from this site. (SHOW your WORK)

2) A client wants you to design a roof-mounted solar water heater to supplement the energy input to their radiant floor heating system. They would like to have an indirect solar collection system similar to the one shown in Figure 11.16 of your textbook. The south-facing solar collector has a stated efficiency of 41%, and will be used to INDIRECTLY heat water in a supplemental storage tank that has a capacity of 150 Liters (~ 40 gallons). The circulating pump will operate at the rate of 20 x 10^-6 m³/sec. On a typical summer day, there are 5.6 hours of direct sunshine, which creates a 15.5°C temperature rise in the solar collector fluid for that whole time period. Assume the collector fluid is water (heat capacity of 4.184 J/g-°C). What will be the increase in temperature of the water in the storage tank?

A 2-Kg mixture of 20% N2 , 30% O2 and 50% CO2 by mass is heated to 500 K with constant volume. Find The final pressure and the total heat transfer needed.

field engineering is a stressful job, why would you choose it be a field engineering?

how do I answer this interview question?

In other words, how do I show that I am able to afford stress

please give an example

A rigid tank of volume 0.75 m3 is initially evacuated. A hole develops in the wall, and air from the surroundings at 1 bar, 30°C flows in until the pressure in the tank reaches 1 bar. Heat transfer between the contents of the tank and the surroundings is negligible. Determine the final temperature in the tank, in °C.

Explain and describe the design, the need for, and use of burnable absorbers. Focus on IFBA types of burnable absorbers.  

use a matlab built-in function to numerically solve:

dy/dx= -x^2+((x^3*e^-y)/4) for 1<=x<=5 with y(1)=1

plot the solution

2) Explain the meaning of 4 different alloy codes by giving the composition and temper condition. State the applications in which these alloys can be used and explain the reasons why these alloys should be used in these specific applications.

A 2-m-high, 4-m-wide rectangular advertisement panel is attached to a 4-m-wide, 0.15 m-high rectangular concrete block (density = 2300 kg/m³) by two 5-cm-diameter, 4-m-high (exposed part) poles, as shown in the figure. If the sign is to withstand 150 km/h winds from any direction, determine (a) the maximum drag force on the panel, (b) the drag force acting on the poles, and (c) the minimum length L of the concrete block for the panel to resist the winds. Take the density of the air to be 1.3 kg/m³.