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ENGINEERING
COLLEGE
The process in which the system pressure remain constant is called a)-isobaric b)-isochoric c)-isolated d)-isothermal
ENGINEERING
MIDDLE SCHOOL
Ame:7. A step-down transformer reduces the primary current.True or false
ENGINEERING
COLLEGE
4. Use voltage divider concepts to find the voltages indicated in the following circuits. You may want to use some of your results from problem 1. You may need to use the voltage divider equation more than once.
ENGINEERING
MIDDLE SCHOOL
When is liquid electrical tape a better choice than conventional electrical tape for covering exposed conductors?
ENGINEERING
MIDDLE SCHOOL
: Built-in beam of length 6 m was loaded with two concentrated loads 20kN at point (B) 2m from left support (A) and 40kN at point (C) 2m from right support (D), and triangular load start from point (B) 0kN/m to point (D) 24kN/m.If E=200GN/m2I= 0.000001m4Determine:1. The reactions and fixing moments2. Slope and deflection at point (C)
ENGINEERING
MIDDLE SCHOOL
Cause and effect of global warming on animals essay
ENGINEERING
COLLEGE
In this type of projection, the angles between the three axes are different:- A) Isometric B) Axonometric C) Trimetric D) Dimetnic
ENGINEERING
COLLEGE
If 100 J of heat is added to a system so that the final temperature of the system is 400 K, what is the change in entropy of the system? a)- 0.25 J/K b)- 2.5 J/K c)- 1 J/K d)- 4 J/K
ENGINEERING
COLLEGE
A container filled with a sample of an ideal gas at the pressure of 150 Kpa. The gas is compressed isothermally to one-third of its original volume. What is the new pressure of the gas a)-900 kpa b)- 300 kpa c)- 450 kpa d)- 600 kpa
ENGINEERING
COLLEGE
A wind turbine system has the following specifications: Diameter:45 m Rated power 700 kW at the wind speed of 12 m/s Turbine speed 1500 rpm Determine the swept area of the wind turbine. a)- 1640 m^2 B)- 1690 m^2 c)- 1590 m^2 d)- 1540 m^2
ENGINEERING
COLLEGE
A tensile test is carried out on a bar of mild steel of diameter 20 mm. The bar yields under a load of 80 kN. It reaches a maximum load of 150 kN, and breaks finally at a load of 70 kN. Find (i) the tensile stress at the yield point (1i) the ultimate tensile stress; (iii) the average stress at the breaking point, if the diameter of the fractured neck is 10mm
ENGINEERING
COLLEGE
What is refrigeration capacity and what is meant by a "ton" of refrigeration?
ENGINEERING
COLLEGE
Use Newton's method to determine the angle θ, between 0 and π/2 accurate to six decimal places. for which sin(θ) = 0.1. Show your work until you start computing x1, etc. Then just write down what your calculator gives you.
ENGINEERING
COLLEGE
The larger the Bi number, the more accurate the lumped system analysis. a)-True b)- False
ENGINEERING
COLLEGE
What are the general principles of DFA? What are the steps to minimize the number of parts for an assembly?
ENGINEERING
COLLEGE
The average flow speed in a constant-diameter section of the Alaskan pipeline is 2.5 m/s. At the inlet, the pressure is 8.25 MPa (gage) and the elevation is 45 m; at the outlet, the pressure is 350 kPa (gage) and the elevation is 115 m. Calculate the head loss in this section of pipeline.
ENGINEERING
COLLEGE
Assume that in orthogonal cutting the rake angle is 15° and the coefficient of friction is 0.15. a. Determine the percentage change in chip thickness when the coefficient of friction is doubled. Justify your answer. b. Determine the percentage change in chip thickness when the rake angle is increased to 25o . Justify your answer.
ENGINEERING
COLLEGE
A 78-percent efficient 12-hp pump is pumping water from a lake to a nearby pool at a rate of 1.5 ft3/s through a constant-diameter pipe. The free surface of the pool is 32 ft above that of the lake. Determine the irreversible head loss of the piping system, in ft, and the mechanical power used to overcome it. Take the density of water to be 62.4 lbm/ft3.
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