no 1
No 7.
The reverse system is used to increase the total solid orange juice from 11% to 24% consisting of 100 pipes with a length of 10 m and a diameter of 0.1 cm. the membrane permeability coefficient is known as 0.2 kg water / m² hours kPa and the product feed rate is 185 kg / min
a) determine the flow of water (kg water / hour) to reach that concentration .... (kg / min)
b) make an estimate of the difference in transmembrane hydrostatic pressure required in the operating system ... (kpa)

Solve by Excel Solver using  branch and bound method.

Minimise:

f = 4x1 + 5x2 + x3 + 4x4 + 2x5 + 11x6 + 2x7

Subject to:

g1 = 2x1 + 4x2 + 5x3 + 7x4 + x5 + 4x6 + 10x7 ≥ 110

g2 = 4x1 + x2 + 5x3 + 7x4 + 3x7 ≤ 80

g3 = 2x1 + 5x2 + 3x3 + 3x4 + x5 + 8x6 + x7 ≥ 40

x1, x2, x3, x4 ∈ {1, 2, 3, 4}

x5, x6, x7 ≥ 0

Calculate the osmotic pressure of low-fat milk with 9% total solids at 20°C and a gas constant of 8.134 m³ kPa / Kg mol K

A 10 kg steam initially at 2 MPa saturated vapor is inside an insulated piston cylinder. The cylinder has a bottom valve. As this valve opens, steam at 800 kPa and 200C exits while the steam inside the tank has 400kPa saturated vapor. Find the exit mass of steam from the cylinder in kg.

Que1.Consider two balls of identical mass. If ball 1 is moving to the right towards stationary ball 2 at 1.0 m/s and the two balls collide elastically, what will the final velocities of both balls be? (Hint: consider this simulation.)

Que 2.If the same two balls again undergo a collision, but this time the collision is inelastic, what will the final velocities of both balls be?

Que 3.What are the conditions for elastic and inelastic collisions?

Que 4.Explain how the acceleration of an object can be equal to gravitational acceleration.

Problem 1: A 5.2-liter, spark-ignition, four-stroke cycle, V6 automobile engine operates at 2400 RPM with ? = 1.5. The engine has a volumetric efficiency of 89%, with bore as B = 2.1 S. The density of air at room temperature is 1.18 kg/m3.

Lamda = 1.5

Calculate:

1. Stroke length (m and cm)
2. Average piston speed (m/sec)
3. Mass flow rate of air into engine [kg/sec]
4. Mass flow rate of fuel into engine [kg/sec]

Angular work is positive during eccentric muscle contraction and negative during concentric
muscle contraction. With the aid of sketches, explain the reason for work to be positive and
negative for eccentric and concentric muscle actions, respectively.

To find a positive root for , write a MATLAB script file that uses Bisection method. Choose any initial value that is needed. Use absolute relative approximate error to be less than 0.01. Your code should report the number of iteration and the value of x.

Write a MATLAB script file to integrate  using trapezoid method (do not use trapz command for this part, write your own script). Consider x=-0.5 to 3 with Δt=0.01, and compare your result with using “integral” and "trapz" commands (all in one file).

A power plant operates on a regenerative vapor power cycle with one open feedwater heater. Steam enters the first
turbine stage at 12 MPa, 520◦C and expands to 1 MPa, where some of the steam is extracted and diverted to the open
feedwater heater at 1 MPa. The remaining steam expands through the second turbine stage to the condenser pressure of
6 kPa. Saturated liquid exits the open feedwater heater at 1 MPa. For isentropic processes in the turbines and pumps,
determine for the cycle.
a) The thermal efficiency.
b) The net power developed, in MW, for a mass flow rate of 106 kg/h into the first-stage turbine.

Steam at 32 MPa, 520◦C leaves the steam generator of an ideal Rankine cycle modified to include three turbine

stages with reheat between the stages. The reheat pressures are 4 and 0.5 MPa, respectively, and steam enters the second-
stage turbine at 440◦C and the third-stage turbine at 360◦C. The condenser pressure is 0.08 bar. Determine for the cycle

a) The net work per unit mass of steam flowing, in kJ/kg.
b) The thermal efficiency.

Analyze the different types of defects that can be developed in plastic injection moulding processes. Your analysis must include the defects explanation, causes of the defects and the remedy of reducing the defects

A SMC is being used to mold the outer panel of an automobile hood. The inner panel of the hood will be made from a thin-gage steel. Write three concerns you may have for using SMC in this application. Suggest a method of improving the stiffness of the outer panel without increasing its weight and discuss a molding defect that may be associated with this method.

An object is initially traveling at a velocity of 12 m/s. It then begins to change it’s velocity according to the function ?=2.5?+3? v = 2 . 5 s + 3 a , where v is the velocity of the object, s is the objects position, and a is the acceleration. Determine the velocity of the object 30 meters after the velocity begins to change. (17.5 m/s)