what are the four different mechanisms in a steam engine? explain them.

ABCD is a four bar chain with link AD fixed. The lengths of the links are AB = 62.5 mm;
BC = 175 mm; CD = 112.5 mm; and AD = 200 mm. The crank AB rotates at 48 rad/s
clockwise. Draw the velocity and acceleration diagram when angle BAD = 60° and B and
C lie on the same side of AD. Find the angular velocity and angular acceleration of links
BC and CD.

A horizontal jet of oil (SG = 0.6) strikes a curved blade that turns the flow through an angle of 180⁰. The jet area is 1000 mm² and its speed from a stationary nozzle is 35 m/s. The blade is moving toward the nozzle at 15 m/s. Determine the force on the blade from the jet (a) in horizontal direction, Rx in kN and (b) in vertical direction, Ry in kN. [Consider the relative jet velocity in calculations]

Air cargo has experienced a renaissance in the last several years because of skyrocketing international e-commerce amid heightened consumer expectations and reduced oil prices. Additionally, airfreight has become increasingly competitive against other modes of transportation in recent years. Discuss how air cargo should be forecast in 20 years and develop a schematic diagram on the future plan of cargo infrastructure with consideration of air traffic forecast

The sample measurements for Aluminum, Copper and Nylon have the same length, width, and thickness. While the length is 76.5mm and the width is 19.5mm, the thickness of these samples are about 0.127 mm.
How might these specimens behave differently if they were thick?

A 4500 lb SUV is traveling at 65 mph when it strikes a staged attenuator designed to produce three different energy dissipation rates. For the first 6 ft, the attenuator produces a force of 20,000 lb on the impacting vehicle. The second stage is 4 ft long and produces a deceleration force of 40,000 lb. “How long does the attenuator’s 3rd stage have to be to safely stop the SUV if its deceleration force is 60,000 lb. Construct the a-s, a-t, and v-t curves for this impact. (Hint: safely stopping the SUV means the vehicle stops before using up the 3rd stage.)

You have just joined the design and development group at Panasonic, Inc. The first task you are given is to work on the design of a thermal system to anneal TV glass screens. Each screen is made of semi-transparent glass and weighs 10 kg. You need to heat it from a room temperature of 25°C to 1100°C, maintain it at this temperature for 15 minutes, and then cool slowly to 500°C, after which it may be cooled more rapidly to room temperature. The allowable rate of temperature change with time, ∂T/∂t, is given for heating, slow cooling, and fast cooling processes. Any energy source may be used and high production rates and uniform annealing are desired. (a) Give the sketch of a possible conceptual design for the system and of the expected temperature cycle. Briefly give reasons for your choice. (b) List the requirements and constraints in the problem. (c) Give the location and type of sensors you would use to control the system and ensure safe operation. Briefly justify your choices (d) Outline a simple mathematical model to simulate the process.

Discuss the processes for manufacturing components of complicated shapes in larger quantities.

State the importance of using superheaters and reheaters in standalone steam power plants and in combined cycle power plants. Make a short comparison

please compare them to each other.

what precautions are taken when transferring fuel oil from one double bottom tank to another double bottom tank on a ship?

Derive the transformation equations for normal stress and shear stress acting on the inclined
plane (for 2D case)

Starting with a spring index of C = 10, design a compression coil spring of 302 stainless wire with squared ends. The spring is to deflect y = 50 mm, for an applied force of F = 90 N and to close solid when ys = 60 mm. At closure, use a design factor of 1.2 guarding against yielding. Select the smallest diameter wire where wire diameters are available in 0.2-mm increments between 0.2 to 3.2 mm. For the design, specify the wire diameter, the inside and outside diameters of the coil, the spring rate, the total number of coils, the free length of the spring, the final factor of safety, and stability conditions.

Hello! I have some questions related to using Ansys Fluent, I have read the instruction of Ansys Book , but I still do not understand clearly, can you help me? They are as the following:
1. When do we need to use pressure inlet for B.C for the inlet boundary and pressure outlet B.C for the outlet boundary?

2. Can we use pressure inlet B.C for the inlet boundary and outlet B.C for the outlet boundary in one fluid flow study (air flow, gas flow..)? The reason why I ask this question because I used to see on the internet written that if we use pressure inlet B.C for the inlet boundary, we are not recommended to use pressure outlet B.C for the outlet boundary, we are recommended to use velocity outlet B.C for the outlet boundary. Is it right or not?

3. Does the operating pressure in the operating condition effect the gauge pressure in the pressure outlet/ inlet ?

4. In the wall B.C, what does it mean if I choose the stationary wall or the moving wall? Sorry, I have read the instruction of ansys, but I still do not get it.

Thank you in advance! I will thumb you up!