(a) Explain why XRD (X-Ray Diffraction) and TEM (Transmission Electron Microscopy) techniques are suitable in examining the unit cells and crystal structures of solids. (b) Calculate the expected diffraction angle (θ) for the first order reflection from the (310) planes of BCC chromium (Cr) when a monochromatic X-ray radiation of wavelength (λ) 0.757 Ao is used.

write a Fortran 77 language code for the vortex tube used in mining with its exergy and anergy analysis using r407c refrigerant

A gaseous fuel mixture of 60% propane (C3H8) and 40% butane (C4H10) is an adiabatic The combustion chamber is fully burned with stoichiometric amount of air. Inputs 1 atm According to the pressure and 25 ℃ temperature entering the combustion chamber and the products exit at 1 atm pressure,

a) Write the combustion equation.

b) Air-fuel ratio,

c) Dew point temperature of the products,

d) Calculate the outlet temperature of the products.

(please explain step by step)

There are 5000 CFM of outdoor air with a temp of 40F 35Fwb heated and humidified under steady-flow conditions to a final temp of 70F and 40%RH a)find the mass of water vapor added to each pound mass of dry air b) if the water is supplied at 50F how much heat in Btu/min.

Please answer fast

Determine the properties of moist air in a region where tdb=80F,twb=70F and barometer reading of 750 mmHg. Compute (a) dew point temperature (b) percent relative humidity (c)partial pressure of dry air (d) specific humidity (e) enthalpy (f) specific volume of moist air.

You are the manager of a healthcare facility that is considering different payment options for buying supplies for your facility. The annual charges for these supplies is $10,000 and the vendor is offering you three payment options to consider.

option 1: 3% discount if you make the full payment in 30 days.

option 2: quarterly payments at the beginning of each quarter with a service charge of $100 per quarter.

option 3: monthly payments at the beginning of each month with a service charge of 3% for each monthly payment.

Q1: Which of these three options provides the best value for money? Why?

Q2: Payments for these supplies are made from your bank account which has a current balance of $30,000 and earns monthly interest of 0.2%.

a. Which of these three options now provides the best value for money?

b. At what interest rate would you be indifferent between Options 1 and 2?

c. At what interest rate would you be indifferent between Options 2 and 3?

d. Consider the ending balances under each of these three options for interest rate ranging from 0.0% to 2.0%. Develop data tables to compute the ending balances for this range of interest (consider interest increments of 0.2%). Depict your results in a line graph.

Assuming standard atmospheric pressure and tdb=25 C and 90% RH. Compute (a) dew point temperature (b) specific humidity (c) enthalpy (d) wet bulb temperature

Joining dissimilar metal in arc welding is a difficult task. Explain why?

There are 5000 CFM of outdoor air with a temp of 40F 35Fwb heated and humidified under steady-flow conditions to a final temp of 70F and 40%RH a)find the mass of water vapor added to each pound mass of dry air b) if the water is supplied at 50F how much heat in Btu/min.

An ACME double-threaded power screw has 45 mm major diameter, a pitch of 5 mm and thread angle 2α=29°. A vertical load on the screw reaches a maximum of 8.5 kN. The coefficients of friction are 0.05 for the thread and 0.1 for the collar. The frictional diameter of the collar is 65 mm. a) Find the efficiency of the power screw. b) Is this power screw self-locking? Explain why

At a point in a bracket, the stress on two mutually perpendicular planes are 100 N/mm² (tensile) and 50 N/mm² (tensile). The shear stress across the planes is 80 N/mm². Find using Mohr stress circle or otherwise calculate:

1. Magnitude and direction of the resultant stress on plane making an angle of 20⁰ with the plane of the first stress.
2. Maximum shear stress and location of its plane.

c. Principal stresses and the location of principal planes

Design any pneumatic system of any industrial application with at least 3 outputs.

Please describe the components used.

Example: Bottle Sorting and Labelling: The three outputs can be to sort the bottle by color or size then Seal the Bottle and later Put it in a box. This is just an example...you can use any.

A long, cylindrical, electrical heating element of diameter D= 10 mm, thermal conductivity k= 240 W/m·K, density ρ= 2700 kg/m³, and specific heat cp= 900 J/kg·K is installed in a duct for which air moves in cross flow over the heater at a temperature and velocity of 27°C and 15 m/s, respectively.
(a) Neglecting radiation, estimate the steady-state surface temperature when, per unit length of the heater, electrical energy is being dissipated at a rate of 1500 W/m.
(b) If the heater is activated from an initial temperature of 27°C, estimate the time required for the surface temperature to come within 10°C of its steady-state value.
Evaluate the properties of air at 450 K.

What is the value of the Reynolds number?

Re = 4613.05 (correct)

What is the value of the average Nusselt number?

not sure

What is the steady state temperature, in K?
got it correct

=666.96 K

What is the value of the Biot number?

Bi =0.0027

got correct

How long does it take for the element to come within 10°C of the steady state temperature, in s?

t= 168.21 correct

Knowing the steady state temperature, what is the actual value of the film temperature that should be used to find the air properties, in K? (Do not redo the problem.)

Tf=

(not sure )