a) Briefly write down the basic heat gains that make up the cooling load in items.

b) A desired feature from refrigerants is that the evaporation pressure is high and the condensing pressure is low. Explain the main reason for this by drawing the T-s diagram of a single-stage cooling cycle.

1. How would you expect a flaw to affect the mechanical properties of brittle materials?

A tank of water is emptied by the force of gravity through a syphon. The difference in water levels between the two tanks is 3 m and the highest point of the syphon is 2 m above the top surface level and the length of the pipe from inlet to the highest point is 2.5 m. The pipe is designed with a bore of 25 mm and the length 6 m. The pipe frictional coefficient is 0.007 and the inlet loss coefficient K is 0.7. Calculate the following:
4.1 the volume flow rate and,
4.2 the pressure at the highest point in the pipe

Two tanks each contain 100 gal of water and tank 2 initially has 50 lbs of salt uniformly dissolved in it. An external flow brings adds 5 gal/min to tank 1 with 5 lbs of salt in it. Tank 1 feeds tank 2 at 10 gal/min, and tank 2 feeds back to tank 1 at 5 gal/min. Finally, an exit stream leaves tank 2 at 5 gal/min.

1) Use Laplace transforms to solve the system of ODEs modeling this system and report the amount of salt in tank 2 as a function of time.

2)find the Homogeneous solution for the system of ODEs above without Laplace transforms; instead, using eigenvalues/eigenvectors.

3)Solve the Particular solution for the system of ODEs above using Undetermined Coefficients.

A)Model the heat transfer system that occurs during the extrusion process and explain the types of heat transfer that occur during the process.

B)Mold material, material to be extruded, mold sizes, material size and section type, extrusion force, ambient temperatures, material temperature, etc. Calculate the heat loss to the environment by using the material-mold-environment heat flow path during the extrusion process by determining the material and process parameters yourself and choosing the conduction and convection constants of the material and environment correctly.

A student studying in medical school, according to the body structure of a person with high fever, the body
will help calculate the time required to lower the temperature to a certain degree
wants you to develop a formula.
Heat produced in the human body 400 W, total heat passing through the body through transmission, convection and radiation
If 800 W and body specific heat 3500 kJ / kgK, other students may also need other features.
By choosing according to your own body structure, the time to lower the body temperature by 10 o C.
You calculate.

size=180cm

weight=93

PROBLEM 4 (3 separate mini-problems) a. Consider two different types of motors. Motor A has a characteristic life of (4000+YZ) hours and a shape parameter B = 0.9. Motor B has a characteristic life of (400+YZ) hours with a shape parameter B = 2.8. Which of these offers better reliability for 100 hours? Which of these offers better reliability for 500 hours? b. A different gasket (known to be at constant failure rate) has a MTBF of 10 months. 1. What is the reliability at (200+ YZ/2) days? 2. How many days does it take for the reliability to fall to a 90% level? 3. How many days does it take for the reliability to fall to a 80% level?
C. Given that a complex software system averages (10+YZ) errors per 20,000 lines of code, you are looking at managing a 10,000 line program. What is the probability of exactly 0, 1, and 2 errors in 10 000 lines of code? What is the probability of 2 or more errors? Show calculations below, with answers to two decimal places. Probability # of errors 0 1 2. >2 100.00%

Steam enters the nozzle of an impulse turbine stage at 60 bar and 500 °C and leaves at 20 bar. Flow is adiabatic and reversible. The nozzle angle is 20°. The moving blade is symmetric, travels at optimum velocity, and assumed to be frictionless. It is also assumed that there is neither expansion nor contraction of the steam flow through the blade passage. Draw the velocity diagram and calculate (a) the blade efficiency and (b) the stage efficiency.

Explain using an example why computing lift ratio is better in assessing soundness of an association rule than just using support for the products associated in the rule or confidence in the rule. What is the practical significance of lift ratio less than 1?

Air at 25°C flows over a 10-mm-diameter sphere with a velocity of 20 m/s, while the surface of the sphere is maintained at 75°C. What is the rate of heat transfer from the sphere? q = ___ W ?

Please provide correct final answer for guaranteed thumbs up rating !

A heat exchanger with one body and eight pipe passes is designed. Water flows from the exhaust gas pipes as cold fluid by the body as cold fluid. Exhaust gas to the system at 210 ° C
and entering at a temperature of 140 ° C
The heat transfer coefficient is 392 W / m2K. On the other hand, water enters 16 iron (k = 38 W / mK) pipes with an inner diameter and outer diameter of 32 mm and 36 mm, respectively, at a temperature of 600 cm / s at 40 ° C and exiting at a temperature of 80 ° C. According to this
a.) Find the flow rate of the exhaust gas.
b.) Find the total heat transfer area.
c.) Calculate the pipe length for one pass.
(The properties of the water will be taken from the table. The air table will be used for the exhaust gas.)

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Describe the drive system used by the robot including the type of sensor

Any robot from any brand:

1. FANUC

2. Yaskawa

3. Motoman

4. ABB

5. KUKA

A vertical axis cylinder 0.075m² in cross sectional area is open to the atmosphere at one end and closed at the other by a piston which supports a mass of 85 kg. the piston is supported by compressed air. 5.46kJ of heat is transferred to the air and the piston lifts the mass through 55cm. What is the increase in internal energy, U, during the process? Draw the path of the process on a PV diagram.

P_atmos= 1.03 bar Ans=0.75 kJ

The temperature and pressure of the steam at the inlet of a high pressure turbine is 500 ° C, respectively. It is 12 MPa and 300 ° C and 3MPa at its outlet. If the mass flow of steam is 400 kg / h, how much is the isentropic efficiency of the turbine?