Explain the Hume-Rothery Rule. Which parameters are more critical than others? What happens if two metals satisfy/don’t satisfy the rule?

1- In a system with outdoor air for ventilation:
(a) the load on coil is equal to the load on building
(b) the load on building is greater than the load on coil
(c) the load on building is less than the load on coil
(d) the Coil ADP is less than room ADP.
2- Evaporative cooling systems are:
(a) attractive for hot and humid climates
(b) attractive for hot and dry climates
(c) ideal for comfort applications
(d) ideal for several industrial applications
3- Selection of a suitable air conditioning system depends on:
(a) Type of the building
(b) Initial and running costs
(c) Reliability and serviceability
(d) All of the above
3- Match the following:
(a) A large precision laboratory a. Variable air volume system
(b) Perimeter zone of a building b. Constant air volume system
(c) Simultaneous cooling and heating c. Multiple zone, single duct system
(d) A large building complex d. Dual duct system
4- A dedicated outside air unit is used to pre-cool 2,500 CFM(1.18m3
/s) of outside air at
31 °C DB and 85% relative humidity to 15.5 °C DB, 14 °C WB. What is the quantity of
water removed by the coil in GPM?
(a) 0.29 ?PM
(b) 0.33 ?PM
(c) 2.9 ?PM
(d) 2.4 ?PM
5- Which of the following statements are TRUE?
(a) Compared to central systems, the initial cost of a unitary system is less
(b) Unitary systems can be installed quickly and their operation is relatively simple
(c) Unitary systems consume less power compared to central systems of same capacity
(d) Unitary systems are ideal for retrofitting applications
6-Unitary refrigerant based systems are:
(a) used for very small capacities only
(b) are available only for cooling applications
(c) couldnot factory assembled with a performance guaranteed by the manufacturer
(d) also called as package units.
7- State which of the following statements are TRUE?
(a) By improving the internal air movement, the energy consumption of the air
conditioning system can be reduced substantially
(b) By increasing air movement, the thermostat of the air conditioning system can be
set at a lower temperature

A single-cylinder, four stroke research engine operates on Otto cycle. The specification
of the engine is shown as below:-
Displacement volume of the cylinder = 560 cm3
Clearance volume of cylinder = 70 cm3

Minimum temperature = 200°C
Minimum pressure = 200 kPa
Net work output = 1000 kJ/kg
Sketch the process on a P-V diagram and by using constant specific heat at room
temperature, determine:

1) the temperature and pressure at each process,
2) the thermal efficiency of the engine, and
3) the Mean Effective Pressure (MEP).

create a tool for detailed design and stress analysis of Spur Gears. Your tool can be based on one oft he following or a combination of any:, Matlab, Excel Spreadsheets, KISS soft software, Python,etc. and it can be supported by any FEA and/or CAD software .Use your developed tool to solve a full design problem of your choice.

We want to determine spesifications of very toxic fuel especially the particle diameters. After some studying we claim that the particle diameter is dp, exit speed is U, the liquid viscosity is u, surface tension is Y, density is p, the diameter of spraying injector exit is D. For a secure experiment we need to work with water. Design an experiment with water and determine the required conditions. Finally, for toxic fuel use the results of experiment for determining spesifications (especially the partical diameter) with mathematical expressions use dimensionless numbers if needed.

3. (10 pts) A simple Rankine cycle operates between the pressures of 10 kPa and 6 MPa. Steam exits the boiler at 550^oC, liquid exits the condenser at 40^oC, the “wet steam” exiting the turbine has a quality of 90%, the pump efficiency is 64% and the net power output from the system is 87.2 MW. Determine:

1. (2 pts) The mass flow rate through the system, in kg/s.
2. (2 pts) The rate of heat rejection from the condenser, in kW.
3. (2 pts) The rate of heat input, in kW.
4. (2 pts) The thermal efficiency.
5. (2 pts) The isentropic efficiency of the turbine.

Explain the design complexity in axial flow turbine and compressor and their solution in brief.

4.Write a report on AI based Social distancing monitoring using drone with out human interaction report should contain drone design it specification it's algorithm control system algorithm.minimum 10 A4 size page.No plagiarism is allowed other wise down rate is given

don't copy from old answer

The terrace roof of a building at sea level is planned to have a rectangular floor area with dimensions of 10 m and 20 m. The prevailing wind speed in winter is u∞=25 km/h, and air temperature is assumed to be T∞=0°C. Considering that the outer surface temperature of the building is To=10°C, how should the building be positioned with respect to the prevailing wind direction to minimize the heat loss from the roof ?

Question of Thermodynamics

Q2    Ethyl alcohol is burnt in a petrol engine, calculate
A     stoichiometric A/F ratio.
B    Air fuel ration and wet and dry analysis of exhaust gases by volume of exhaust gases for mixture strength of (90%+Last digit of your roll number).
C    Air fuel ration and wet and dry analysis of exhaust gases by volume of exhaust gases for mixture strength of (120%%+Last digit of your roll number).

Last Digit is 1. Kindly solve it step by step as it is for final practice.

heat transfer question, show equations, assumptions, calculations and steps clearly. will give thumbs up rating if solved correctly in 50 minutes

Name the different heat transfer modes, and for each mode provide the governing law and an example from your everyday life.

Hello! I am using Ansys Fluent to discuss air-flow in a 2D channel, so which solver should I use? Do I need to use density based solver or Pressure base solver? Is air-flow compressible flow or incompressible flow? ( For me, I think I should use density based solver, because air-flow is compressible flow, but I am not sure about myself, this is why I ask for help from everyone who can help me). Thank You in advance! I will thumb you up!

Estimate the axial infinite fatigue strength (10⁶) and 10³ fatigue strength for a 25 mm diameter reversed axially loaded steel bar having Su =950 Mpa, Sy = 600 Mpa and is made from a “cold drawn” steel.

Assume: T< 840º F, 99 % Reliability, CG = .8