Rigid tank A and tank B (containing water) are connected to a piston cylinder with two valves as shown below. The piston cylinder assembly is initially (state 1) empty when the valves are closed.

The pressure required to float the piston is 800kPa, the piston is constantly loaded and is free to move. Now the valves are opened and the fluid reaches a uniform state at 250C within the system (state 2).

Determine: (a) The final volume (5 points) (b) The final pressure (5 points) (c) The work done (5 points) (d) Show the process on a PV diagram (5 points) (e) The heat transfer

The initial conditions for tank A are: Mass=3kg T=120C Volume=0.6?3 The initial conditions for tank B are: P=600kPa T=200C Volume=0.4?3

show the root sum square method for describing the total uncertainty of a quantity, which depends on a set of parameters called Xi (i=1,n) explain the roll of the sensitivity coefficient of each parameters.

This is experimental fluid dynamics question, please explain nicely

A Styrofoam(k = 0.035 W/m-°C) box has outer dimensions of 250 mm x 450 mm x 600 mm and is 3 cm thick. Initially, the box is filled with 40kg of ice at 0°C, and the inner surface temperature of the ice chest can always be taken to be 0°C. The heat transfer coefficient between the outer surface of box and surrounding air at 35°C is 20 W/m2 -°C. (a) Determine how long it will take for the ice in the box to melt completely. Assume that the heat transfer from the 450 mm x 600 mm bottom of the box is negligible.

Derive the condition of stability of a vehicle while taking a turn in case of front wheel drive.

#subject VEHICLE DYNAMICS

Derive the condition of stability of a vehicle on slope.

#subject VEHICLE DYNAMICS

Explain the term Oversteer and Understeer in measurable along understeer gradient and how weight distribution effect it.

#subject VEHICLE DYNAMICS

Derive the steady state cornering equation. And write down the condition for neutral steer.

#Subject VEHICLE DYNAMICS

design and experimental setup for Air source water heat pump develop its mathematical model using fortran 77 formulate the governing differential equation and solve it by Photon 77 only no other software as it is to be submitted for course work of Mtech and plot the results for various parameter such as outside air temperature and splitting the evaporator will increase the scope or will decreases that also you discuss and finally the conclusion on the whole experiments performed

The power-plant will have 380 MWe electric power.

The proposed gas-vapor cycle is different from traditionally used ones. It
consists of closed gas turbine cycle (instead of open gas turbine cycle used
commonly). The working fluid is helium and the cycle consists of a compressor, a
heater, a turbine and a cooler. The cooler acts as heat recovery steam generator
(HRSG) for steam cycle. Other components of cycle are turbine condenser and
pump. The condition at inlet to compressor is to be taken as 750 kPa, 60oC. The
compressor pressure ratio is 4.0 and the maximum turbine inlet temperature is
900oC. Steam leaves the HRSG at 1 MPa and 300oC. The condenser pressure is 10
kPa. Assume pressure loss across heater, HRSG, condenser and connecting piping
to be negligible. Also, assume hundred percent efficiency for all component.
Calculate the mass flow rate of helium and steam required to provide the desired
power output, the cycle efficiency, and the cycle heat rate. Also estimate the exergy
destruction for this cycle. The environmental conditions are 100 kPa and 30oC.
Estimate pinch-point temperature difference? Is this cycle feasible?

what is the dimension Chain? what is the closing link,increasing link and decreasing link?

15. A four stroke oil engine developing 75 kW at 300 r.p.m is to have the total fluctuation of speed limited
to 5%. Two identical flywheels are to be designed. The workdone during the power stroke is found to
be 1.3 times the average workdone during the whole cycle. The turning moment diagram can be
approximated as a triangle during the power stroke. Assume that the hoop stress in the flywheel and
the bending stress in the arms should not exceed 25 MPa. The shear stress in the key and shaft
material should not exceed 40 MPa. Give a complete design of the flywheel. Assume four arms of
elliptical cross-section with the ratio of axes 1 : 2. Design should necessarily include (i) moment of
inertia of the flywheel, (ii) flywheel rim dimensions, (iii) arm dimensions, and (iv) flywheel boss and
key dimensions and sketch showing two views of the flywheel with all the dimensions

I have absolutely no idea how to attempt this.

You work for a power station design company and have a client who has a fairly loose specification for a steam powered plant. You are required to design a steam power plant cycle that can achieve a cycle thermal efficiency of at least 20%. Assume that any used turbines have isentropic efficiencies of 80% and any pumps have isentropic efficiencies of 65%. The maximum pressure allowed for the cycle is 50 bar and minimum pressure allowed is 1 bar. You have total discretion to assume the temperatures, pressures and any other variable you deem necessary unless stated above, though assumptions need to be of sensible values that are justified given current engineering technology. Your brief summary report should include as a minimum the following;

1- Discuss the advantages and disadvantages of your chosen cycle and compare it to alternative cycles using bullet points.

2- System diagram (Block diagram) and T-s diagrams with labeled states and temperature, pressure, enthalpy, and entropy information for your design. This should also include explanation of your design.

3- Sample calculations for enthalpy difference of turbine stage of your selected cycle.

14. An engine runs at a constant load at a speed of 480 r.p.m. The crank effort diagram is drawn to a scale
1 mm = 200 N-m torque and 1 mm = 3.6º crank angle. The areas of the diagram above and below the
mean torque line in sq mm are in the following order:
+ 110, – 132, + 153, – 166, + 197, – 162
Design the flywheel if the total fluctuation of speed is not to exceed 10 r.p.m. and the centrifugal stress
in the rim is not to exceed 5 MPa. You may assume that the rim breadth is approximately 2.5 times the
rim thickness and 90% of the moment of inertia is due to the rim. The density of the material of the
flywheel is 7250 kg/m3.
Make a sketch of the flywheel giving the dimensions of the rim, the mean diameter of the rim and
other estimated dimensions of spokes, hub etc

12. Design a cast iron flywheel having six arms for a four stroke engine developing 120 kW at 150 r.p.m.
The mean diameter of the flywheel may be taken as 3 metres. The fluctuation of speed is 2.5% of mean
speed. The workdone during the working stroke is 1.3 times the average workdone during the whole
cycle. Assume allowable shear stress for the shaft and key as 40 MPa and tensile stress for cast iron as
20 MPa. The following proportions for the rim and elliptical arms may be taken:
(a) Width of rim = 2 × Thickness of rim
(b) Major axis = 2 × Minor axis