Capillary number is proportional to { (viscous force) / (surface tension force) } and is used in momentum transfer in general and atomization and 2-phase flow in beds of solids calculations in particular. It is equivalent to (We/Re).

___________ Which is the friction factor for ReD = 600 and e/D = 0.002 in pipe flow?

___________ What is the friction factor for ReD= 3 x 105 and D/e = 5000 in pipe flow?

Iron ores found in Ireland and Britain are not suitable for production of high-quality steel because they contain too much of which one of the following elements:

(a) Sulphur
(b) Carbon
(c) Nitrogen
(d) Phosphorus?

The inside of the stack of a blast furnace is usually lined with:

(a) Steel sheets
(b) Ceramic refractories (c) Asbestos
(d) Water-cooled copper?

To improve the fuel-efficiency of the modern blast furnace, which one of the following may be added to the blast:

(a) O2 (b) N2 (c) H2 (d) CO2?

In steelmaking, basic slags are necessary for the removal of which element:

(a) Carbon
(b) Silicon
(c) Phosphorus (d) Oxygen?

Give three examples of materials properties, and indicate where they are used in engineering product development. Compare any one of the listed properties for Metals, Ceramics, and Polymers materials on the same scale graphically

A circumferential aluminum fin is attached to an electronic resistor having 1/4 inch diameter. The fin is 1/8 inch long and .001 inches thick. The convective heat transfer coefficient to the surrounding media, air at 60^oF, is 10 Btu/h ft^{2 o}F when the fin is at 120^oF. Estimate the fin efficiency and the heat transfer from the fin.

A two-pass shell and tube heat exchanger has an overall conductance of 450 W/m^{2 o}C when used as a condenser for a large air conditioning system. Refrigerant R-134a enters thecondenser at 20 kg/ s as a saturated vapor at 70^oC and leaves as a saturated liquid. If cooling water enters at a rate of 60 L/s, 10^oC, determine the outlet temperature of the cooling water and the effective area of the condenser.

Explain the principle of a critical radius when adding isolation to pipes

Sailplanes use updrafts to stay aloft for hours at a time. Near one particular airfield, a stone quarry (with very dark rocks) surrounded by a wooden area provides a particularly regular source for updrafts on hot days. With your knowledge of heat transfer, explain the processes that create the updraft

With your knowledge of heat transfer, explain how birds regulate their temperature

Compute the elastic modulus for the following metal alloys, whose stress-strain behaviors may be observed in the "Tensile Tests" module of Virtual Materials Science and Engineering (VMSE): (a) titanium, (b) tempered steel, (c) aluminum, and (d) carbon steel. How do these values compare with those presented in Table 6.1 for the same metals?

What is steady-state error? What is the type of the system?

What is the steady-state error of type 0, type 1, and type 2 systems for step signal, ramp signal, and parabolic signal, respectively?

A refrigerator with a cooling capacity of 5 ton uses ammonia as the working fluid. The condenser and evaporator maintain a pressure of 1500 kPa and 200 kPa respectively. The compressor has an isentropic efficiency of 80%. If the vapor leaving the evaporator is superheated by 5°C and the liquid leaving the condenser is supercooled by 5°C, determine:
a) The power input to the compressor

b) The mass flow rate of ammonia

c) The COP of the refrigerator

Give me the refernces please

what is the maximum? temperture and minimum for Airbus 320-200 ? Give me the refernces please

what is the maxiumum speed and altitude ? Give me the refernces please

where is the location of the fuel tank ?   Give me the refernces please

After additively manufacturing a part, many manufacturers will perform Hot Isostatic Pressing (HIP) to remove pores from the material. These pores form naturally as part of the process of additive manufacturing, and negatively affect the fatigue life and mechanical properties of the part. After HIP, the material often becomes soft since the high temperature of the process also removes the microstructure.

What process would you use to strengthen the material after the HIP process without changing shape of the part, and why?

The elevator starts from rest at the first floor of the building and comes to a complete stop at the 6th floor. It can accelerate at 6 ft/s² and then decelerate at 2 ft/s² Determine the shortest time is takes to reach the 6th floor, which is 60 ft above the ground. Draw the v?t and s?t graphs for the motion of the elevator.

Using an iron-carbon phase diagram and the lever rule , calculate the expected phases and volume fraction of each phase at room temperature for the a) the 0.20 wt.% C steel and b) the 0.45 wt.% C steel. Draw the equilibrium microstructure you would expect at room temperature for each steel.