Engineering

All new and solved questions in Engineering category

A part is made from 1212 HR steel. 1.If it undergoes a 10% cold work operation, estimate the new yield strength and ultimate strength. 2.If its yield strength is expected to be increased to 75kpsi, how much cold work shall be done

A part is made from 1212 HR steel. 1.If it undergoes a 10% cold work operation, estimate the new yield strength and ultimate strength. 2.If its yield strength is expected to be increased to 75kpsi, how much cold work shall be done...

O propozitie cu "manifesteaza" si "concura"

o propozitie cu "manifesteaza" si "concura"...

A mass of 5 kilograms of air in a piston-cylinder assembly undergoes two processes in series from an initial state where p1 = 4 MPa, T1 = 264°C: Process 1–2: Constant-temperature expansion until the volume is twice the initial volume. Process 2–3: Constant-volume heating until the pressure is again 4 MPa. Sketch the two processes in series on a p-v diagram. Assuming ideal gas behavior, determine (a) the pressure at state 2, in MPa, (b) the temperature at state 3, in oC, and for each of the proce

A mass of 5 kilograms of air in a piston-cylinder assembly undergoes two processes in series from an initial state where p1 = 4 MPa, T1 = 264°C: Process 1–2: Constant-temperature expansion until the volume is twice the initial volume. Process 2–3: Constant-volume heating until the pressure is a...

A rectangular block of 1m by 0.6m by 0.4m floats in water with 1/5th of its volume being out of water. Find the weight of the block.

A rectangular block of 1m by 0.6m by 0.4m floats in water with 1/5th of its volume being out of water. Find the weight of the block....

Recycled materials content is environmental information that is typically: a. self-declared by the manufacturer. b. independently certified by third-party entities. c. listed in the building code. d. part of an environmental label. e. None of the above

Recycled materials content is environmental information that is typically: a. self-declared by the manufacturer. b. independently certified by third-party entities. c. listed in the building code. d. part of an environmental label. e. None of the above...

Energy is not conserved because it can be transferred in term of work and heat. a)-True b)-False

Energy is not conserved because it can be transferred in term of work and heat. a)-True b)-False...

Igure P4.57 provides steady-state operating data for a parallel flow heat exchanger in which there are separate streams of air and water. Each stream experiences no significant change in pressure. Stray heat transfer with the surroundings of the heat exchanger and kinetic and potential energy effects can be ignored. The ideal gas model applies to the air. If each stream exits at the same temperature, determine the value of that temperature, in K.

igure P4.57 provides steady-state operating data for a parallel flow heat exchanger in which there are separate streams of air and water. Each stream experiences no significant change in pressure. Stray heat transfer with the surroundings of the heat exchanger and kinetic and potential energy effect...

A piston/cylinder device has 2.5 kg of air at 350K and 200kPa. It has a non-linear spring attached to the piston such that the pressure is related to the volume according to P-AVI.2+B where "A" and "B" are constants and where P is the absolute pressure in kPa and where Vis the volume in m'. The piston/cylinder device is heated from a heat source at 1600K. First, the piston moves under the spring action until the temperature becomes to 950K just before it hits stops. The volume of the cylinder at

A piston/cylinder device has 2.5 kg of air at 350K and 200kPa. It has a non-linear spring attached to the piston such that the pressure is related to the volume according to P-AVI.2+B where "A" and "B" are constants and where P is the absolute pressure in kPa and where Vis the volume in m'. The pist...

Air flows steadily through a smooth, converging nozzle. At a location where the cross-sectional flow area is equal to 1.0 ft2, the pressure is equal to 115 psia, the temperature is 212 deg F, and the velocity is 250 ft/s. At a second location, downstream from the first, the area is equal to 85 in2. Compute the Mach number and velocity at this section.

Air flows steadily through a smooth, converging nozzle. At a location where the cross-sectional flow area is equal to 1.0 ft2, the pressure is equal to 115 psia, the temperature is 212 deg F, and the velocity is 250 ft/s. At a second location, downstream from the first, the area is equal to 85 in2. ...

What is the advantage of using sun energy over fossil fuels

what is the advantage of using sun energy over fossil fuels...

Hot water (cph = 4188 J/kg∙K) enters a thin-walled double-pipe counterflow heat exchanger at 2.5 kg/s and 100°C. The overall heat transfer coefficient and the surface area are 1000 W/m2 ∙K and 21 m2 , respectively. For the cold stream, cold water (cpc = 4178 J/kg∙K) enters the heat exchanger at 5 kg/s and 20°C. (a) Determine the heat transfer rate for the heat exchanger (in W)

Hot water (cph = 4188 J/kg∙K) enters a thin-walled double-pipe counterflow heat exchanger at 2.5 kg/s and 100°C. The overall heat transfer coefficient and the surface area are 1000 W/m2 ∙K and 21 m2 , respectively. For the cold stream, cold water (cpc = 4178 J/kg∙K) enters the heat exchanger ...

A turbine in a simple ideal Rankine cycle with water as the working fluid operates with an inlet temperature of 500°C and pressure of 600 kPa and an exit temperature of 45°С. Find the turbine work in MW if the mass flow rate of the steam is at 11 kg/s.

A turbine in a simple ideal Rankine cycle with water as the working fluid operates with an inlet temperature of 500°C and pressure of 600 kPa and an exit temperature of 45°С. Find the turbine work in MW if the mass flow rate of the steam is at 11 kg/s....

What is the density of a 3.25 in. diameter sphere of steel that weighs 3.21 lbs? Round to two decimal places. DO NOT INCLUDE UNITS.

What is the density of a 3.25 in. diameter sphere of steel that weighs 3.21 lbs? Round to two decimal places. DO NOT INCLUDE UNITS....

Which is the main material in a solar cell?

Which is the main material in a solar cell?...

*Avoid waiting in long drive-thru lines, for example, at fast-food restaurants or banks. Park your car and go in. *When possible, use public transportation, walk, or ride a bike. *Get regular engine tune ups and car maintenance checks. *Join a carpool or vanpool to get to work or school. *Keep tires properly inflated and aligned. Conservation. The choices in the list above help to regulate important biogeochemical cycles as well as conserve important natural resources. Making these good choices

*Avoid waiting in long drive-thru lines, for example, at fast-food restaurants or banks. Park your car and go in. *When possible, use public transportation, walk, or ride a bike. *Get regular engine tune ups and car maintenance checks. *Join a carpool or vanpool to get to work or school. *Keep tires...

**Please Help. ASAP**Rearrange the formula so the letter in parenthesis is the subject. Show your work as well.1) v-u/a = t, (v)2) y-x^2/x = 3z, (y)3) x+xy = y, (x)4) x+y = xy, (x)5) x = y+xy, (x)6) E = (1/2)mv^2-(1/2)mu^2, (u)7) (x^2/a^2)-(y^2/b^2) = 1, (y)8) ay^2 = x^3, (y)

**Please Help. ASAP**Rearrange the formula so the letter in parenthesis is the subject. Show your work as well.1) v-u/a = t, (v)2) y-x^2/x = 3z, (y)3) x+xy = y, (x)4) x+y = xy, (x)5) x = y+xy, (x)6) E = (1/2)mv^2-(1/2)mu^2, (u)7) (x^2/a^2)-(y^2/b^2) = 1, (y)8) ay^2 = x^3, (y)...

If you've wondered about the flushing of toilets on the upper floors of city skyscrapers, how do you suppose the plumbing is designed so that there is not an enormous impact of sewage arriving at the basement level?

If you've wondered about the flushing of toilets on the upper floors of city skyscrapers, how do you suppose the plumbing is designed so that there is not an enormous impact of sewage arriving at the basement level?...

The angle measures in a triangle are (3x + 4)°, (5x)°, and (7x- 4)°. What is the measure of the largest angle in the triangle

The angle measures in a triangle are (3x + 4)°, (5x)°, and (7x- 4)°. What is the measure of the largest angle in the triangle...