A cylindrical rod of copper originally 16.0 mm in diameter is to be cold worked by drawing; the circular cross section will be maintained during deformation. A cold-worked yield strength in excess of 250 MPa and a ductility of at least 12% EL are desired. Furthermore, the final diameter must be 11.3 mm. Explain how this may be accomplished:
(1) show why it cannotbe realized by single drawing and (2) suggest proper procedures to fulfill the requirements.You will need to use following figuresto solve the problem.
Answers
Solution :
Given data:
Diameter of the copper cylindrical rod = 16 mm
Yield strength = 250 MPa
Calculating the percent cold work
\($\text{Percentage Cold Work} = \frac{\pi\left(\frac{d_0}{2}\right)^2-\pi\left(\frac{d_d}{2}\right)^2}{\pi\left(\frac{d_0}{2}}\right)^2} \times 100$\)
\($ = \frac{\pi\left(\frac{16}{2}\right)^2-\pi\left(\frac{11.3}{2}\right)^2}{\pi\left(\frac{16}{2}}\right)^2} \times 100$\)
= 50% CW
Therefore, at \(50\% \ CW\), the yield strength of copper will be of the order of 330 MPa.
The ductility will be 4% elongation (EL).
Rather than performing drawing in single operation, we draw some of the fraction of total deformation, and then the anneal them to recrystallize and also finally w do cold work on the material for the second time to achieve its final diameter, ductility and yield strength.
\(21\% \ CW\)is required for a yield strength of \(250 \ MPa\). Similarly, a maximum of \(23\% \ CW\) is required for\(12\% \ EL\).
The average of the two values is \(22\% \ CW\). To achieve both the \(\text{specified yield strength and ductility,}\) the copper should be deformed to\(22\% \ CW\). The\(\text{ final diameter}\) after the first drawing and the initial diameter for the second drawing is \($d_0'$\) , then
\($22\% \ CW = \frac{\pi\left(\frac{d_0'}{2}\right)^2-\pi\left(\frac{11.3}{2}\right)^2}{\pi\left(\frac{d_0'}{2}}\right)^2} \times 100$\)
\($d_0'=\frac{11.3}{\sqrt{1-\frac{22\% \ CW}{100}}}$\)
\($d_0'=12.8 \ mm$\)
Related Questions
What is the composition, in atom percent, of an alloy that consists of 4.5 wt% Pb and 95.5 wt% Sn?
a. 2.6 at% Pb and 97.4 at% Sn.
b. 7.6 at% Pb and 92.4 at% Sn.
c. 97.4 at% Pb and 2.6 at% Sn.
d. 92.4 at% Pb and 7.6 at% Sn.
Answers
Answer: Option A is correct -- 2.6 at% Pb and 97.4 at% Sn.
Explanation:
Option A is the only correct option -- 2.6 at% Pb and 97.4 at% Sn. While option B, which is 7.6 at% Pb and 92.4 at% Sn. and option C, which is 97.4 at% Pb and 2.6 at% Sn. and option D, which is 92.4 at% Pb and 7.6 at% Sn. are wrong.
we want to specify an rc3 class fit for the illustrated hole and shaft. what is the minimum allowable diameter of the hole if its basic size is 1.25 inches?
Answers
The basic size of the hole for an RC3 fit is 1.25 + 0.0015 = 1.2515 inches
How to specify an RC3?To specify an RC3 fit for the illustrated hole and shaft, we need to determine the minimum allowable diameter of the hole.
First, we need to know the limits of the hole and shaft sizes for an RC3 fit.
According to ANSI B4.1 standard for fits and tolerances, the basic size of the shaft is 1.25 inches and the tolerance class is H11.
The basic size of the hole for an RC3 fit is determined by adding a certain amount of allowance to the basic size of the shaft.
The allowance is calculated based on the fit type, the shaft tolerance class, and the hole tolerance class. For an RC3 fit, the allowance is 0.0015 inches.
Therefore, the basic size of the hole for an RC3 fit is 1.25 + 0.0015 = 1.2515 inches. This is the minimum allowable diameter of the hole for the specified fit.
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You filled a balloon that has a volume of 45 cm3 with helium gas. What is the volume of the helium gas?
Answers
Answer:
The volume of the helium gas is 45 cm³.
Explanation:
The volume of the helium gas can be determined from kinetic theory of gases, which states that gas molecules do not have a fixed volume, rather they assume the volume of their container.
Therefore, if the volume of the balloon is 45 cm³, which is also the container of the helium gas, then the volume of the helium gas is 45 cm³.
Discuss the design a hypothetical computer of tomorrow, the
equivalent of a desktop or notebook PC today. How big would the
computer be? Would it be portable or built into furniture or some
other object? Should it be wearable or embedded in a person’s
body? What is the ideal computer of the future?
Answers
The future computer will be powerful, portable, lightweight, and compact with features like VR, AR, and AI. It will analyze big data, integrate with other devices, prioritize ergonomics and customization, and ensure security and privacy.
The hypothetical computer of tomorrow will be more powerful and portable than the current computer. It should be more lightweight and compact to make it easier to carry and transport. It is expected to have features like Virtual Reality (VR), Augmented Reality (AR), and Artificial Intelligence (AI), which will allow the computer to better interact with users and provide more sophisticated services.
Additionally, the ideal computer of the future should have the capability to analyze big data in real-time, allowing for faster decision-making processes. It should also provide seamless integration with other devices, including smartphones, tablets, and wearables.
The computer should have an ergonomic design, with a focus on comfort, usability, and health. It should be flexible, easy to operate, and customizable, making it possible for users to personalize their experience according to their needs.
It may come in various forms, such as tablets, desktops, or wearables like smartwatches. It can also be portable, wearable, or built into furniture or some other object, but it should be secure and provide privacy to the users.
The ideal computer of the future should have the capacity to meet the ever-growing needs of the user and provide a seamless experience. It should be a perfect combination of power, speed, and efficiency, with the ability to handle complex tasks with ease.
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To change a logic gate to its alternate representation, a simple three-step process is followed. true or false
Answers
Given sentence: ''To change a logic gate to its alternate representation'' is False. Because to replace the gate with its opposite type (e.g. replace an AND gate with an OR gate, or a NAND gate with a NOR gate).
Logic is the study of correct reasoning. It includes both formal and informal logic. Formal logic is the science of deductively valid inferences
To change a logic gate to its alternate representation, a simple two-step process is followed:
Invert the output of the gate (change 1 to 0 or 0 to 1).
Replace the gate with its opposite type (e.g. replace an AND gate with an OR gate, or a NAND gate with a NOR gate).
There is no need for a third step.
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The feasible region for the pure ILP problem:a. is equivalent to the feasible region for the LP relaxation problemb. is a lattice consisting of points corresponding only to integer values of the decision variablesc. is a k-dimensional hyperspaced. is impossible to determine
Answers
It is to be noted that the feasible region for the pure integer linear programming (ILP) problem: " is a lattice consisting of points corresponding only to integer values of the decision variables" (Option B).
What is a Pure Integer Linear Programming problem?An integer programming (IP) issue is a linear programming (LP) problem in which the decision variables must be integers. The goal function as well as the restrictions must be linear. The branch-and-bound approach is the most widely utilized method for solving an IP.
The LP relaxation of an ILP problem is obtained by relaxing the integer constraints on the decision variables, allowing them to take on fractional values.
Thus, the feasible region for the LP relaxation is a superset of the feasible region for the corresponding ILP problem, as it includes all of the points that are feasible for the ILP problem as well as additional points that are feasible for the LP relaxation but not the ILP problem.
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A stone is catapulted at time t = 0, with an initial velocity of magnitude 21.1 m/s and at an angle of 39.9° above the horizontal. What are the magnitudes of the (a) horizontal and (b) vertical components of its displacement from the catapult site at t = 1.08 s? Repeat for the (c) horizontal and (d) vertical components at t = 1.75 s, and for the (e) horizontal and (f) vertical components at t = 5.09 s. Assume that the catapult is positioned on a plain horizontal ground.
Answers
Answer:
(a) X = 17.48 m
(b) Y = 8.903 m
(c) X = 28.33 m
(d) Y = 8.68 m
(e) X = 44.68 m
(f) Y = 0 m
Explanation:
Given;
magnitude of initial velocity, v = 21.1 m/s
angle of projection, θ = 39.9°
the horizontal component of the velocity, \(v_x = vcos \theta\)
\(v_x = 21.1(cos 39.9^0) = 16.187 \ m/s\)
the vertical component of the velocity, \(v_y = vsin \theta\)
\(v_y = 21.1(sin 39.9^0) = 13.535 \ m/s\)
(a) the horizontal components of its displacement;
\(X = v_xt + \frac{1}{2} gt^2\)
gravitational influence on horizontal direction is negligible, g = 0
\(X = v_xt \\\\X = (16.187)(1.08)\\\\X = 17.48 \ m\)
(b) the vertical components of its displacement;
\(Y = v_yt + \frac{1}{2} gt^2\\\\Y = (13.535*1.08) + \frac{1}{2} (-9.8)(1.08)^2\\\\Y = 14.618 -5.715\\\\Y = 8.903 \ m\\\)
(c) the horizontal components of its displacement;
\(X = v_xt\\\\ X = (16.187)(1.75)\\\\X = 28.33 \ m\)
(d) the vertical components of its displacement;
\(Y = v_yt + \frac{1}{2} gt^2\\\\Y = (13.535 *1.75) + \frac{1}{2} (-9.8)(1.75)^2\\\\Y = 8.68 \ m\)
(e) the horizontal components of its displacement;
\(X = v_xt \\\\X = (16.187*5.09)\\\\X = 82.39 \ m\\\)
(f) the vertical components of its displacement;
\(Y = v_yt + \frac{1}{2}gt^2\\\\ Y = (13.535*5.09)+ \frac{1}{2}(-9.8)(5.09)^2\\\\Y = -58.1 \ m\)
this displacement is not possible because it is beyond zero vertical level; it shows that the stone will hit the ground before 5.09 s.
When the stone hits the ground Y = 0 m
At zero vertical displacement (Y = 0 m), the time at that position will be calculated as;
\(Y = v_yt+\frac{1}{2}gt^2\\\\0 = (13.535t) + \frac{1}{2}(-9.8)t^2\\\\0= 13.535t - 4.9t^2\\\\0 = t(13.535-4.9t)\\\\t = 0 \ \ or \\\\13.535-4.9t = 0\\\\4.9t = 13.535\\\\t = 2.76 \ s\)
The horizontal displacement at this time is given by;
X = vₓt
X = (16.187 x 2.76)
X = 44.68 m
Technician a says that a steering column may be designed to absorb energy technician b says that vehicle seats may be designed to absorb energy who’s right
Answers
Since Technician A says that a steering column may be designed to absorb energy and Technician B says that vehicle seats may be designed to absorb energy. The both of them ( Tech A and B) are right.
What does a car's steering column do?The rod that the steering wheel is mounted to is known as the steering column of a vehicle. On a shaft inside the steering column, the steering wheel is mounted. The steering inputs are delivered to the steering rack or box by the steering column.
A shaft that passes through the steering column is used to link the steering wheel to the shaft.
Therefore, The purpose of bumper reinforcements, which are often made of highly strong materials like UHSS or aluminum, is to spread the crash energy.
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Please help!!!!! Thank u
Answers
Answer:
which class is this. I don't know sry
Hard steering can be caused by
Answers
Answer:
Lack of fluid oil – lack of fluid oil in your vehicle, or a fluid leakage, can lead to heavy steering. If there is a lack of fluid oil, or a leak, this can reduce the pressure in the system, meaning the steering wheel does not receive enough supply of fluid to perform freely.
explain why it is not advisable to wear a ring at work shop
Answers
Answer:
Metal conducts heat so it could severely burn your finger.
Rings can create multiple hazards while working with chemicals.
Rings/Jewlery can be a "hiding place" for bacteria.
Amongst many other reasons as to why it's not advisable to wear a ring(s) at a workshop/workplace.
Which of these statements is true about seat belts on heavy equipment?
A. If a vehicle doesn't have a rollover protective structure, you may not have to wear a seatbelt.
B. You must wear seat belts that meet OSHA standards.
C. You don't have to wear a seatbelt on equipment that is only designed for standup operation.
D. All of these statements are true.
Answers
Note that the statements is true about seat belts on heavy equipment is:
"You must wear seat belts that meet OSHA standards is a true statement about seat belts on heavy equipment." (Option B)
What is the rationale for the above response?Note that it is required for one to wear seat belts that meet OSHA standards.
OSHA requires the use of seat belts on heavy equipment, including vehicles with rollover protective structures (ROPS). The seat belts must be in good condition and meet OSHA standards.
Failure to use seat belts can lead to serious injury or death in the event of an accident or rollover. Thus, the other statements are not true.
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The pinion gear A on the motor shaft is given a constant angular acceleration a3 rad/s2. If the gears A and B have the dimensions shown, determine the angular velocity and angular displacement of the output shaft . when 2 s starting from rest. The shaft is fixed to B ancd turns with it. -125 mm 35 mm
Answers
The angular displacement of the output shaft after 2 seconds is 2a3 rad, and its angular velocity is 2a3 rad/s.
To solve this problem, we need to use the kinematic equations of rotational motion. The given constant angular acceleration of pinion gear A is a3 rad/s^2. We also know that the system starts from rest, which means the initial angular velocity is zero.
Using the equation:
θ = ω0t + 1/2 a3t^2
where θ is the angular displacement, ω0 is the initial angular velocity, t is the time, and a3 is the constant angular acceleration of pinion gear A.
We can find the angular displacement of pinion gear A after 2 seconds:
θ = 0 + 1/2 (a3)(2)^2
θ = 2a3 rad
Since pinion gear A and gear B have meshed together, they have the same angular displacement. Therefore, the angular displacement of gear B and the output shaft is also 2a3 rad.
Using the equation:
ω = ω0 + a3t
where ω is the final angular velocity.
We can find the final angular velocity of pinion gear A after 2 seconds:
ω = 0 + (a3)(2)
ω = 2a3 rad/s
Since gear A and gear B have the same pitch diameter, they also have the same angular velocity. Therefore, the angular velocity of gear B and the output shaft is also 2a3 rad/s.
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An evacuated tank is filled with gas from a constant pressure line. Develop an expression relating the temperature of the gas in the tank to the temperature of the gas in the line. Assume the gas is ideal with constant heat capacities, and ignore heat transfer between the gas and the tank.
Answers
The temperature of the gas in the tank is the ratio of heat capacities times the temperature of gas in the constant pressure line.
What is temperature?It should be noted that temperature simply means the measure of hotness and coldness in a body
From the given information, H is the enthalpy of gas on the constant pressure line, m is the mass flow rate and U is the internal energy of gas.
Here, the temperature of the gas in the tank is the ratio of heat capacities times the temperature of gas in the constant pressure line.
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A circular bar supports an axial force of 39 KN. If the compressive stress in the bar is not to exceed
80 MN/m2, determine the diameter of the bar.
Answers
The diameter of the bar is 55.85 KN
What does "bar diameter" mean?A circular bar supports an axial force of 39 KN. If the compressive stress in the bar is not to exceed 80 MN/m2,
If you want to get the nominal diameter in inches, multiply the bar size by 80/39. For instance, the diameter of #8 rebar is 80/39 inches (or 1 inch). The weight, nominal area, and nominal diameter are common metrics.
The formula below may be used to determine the minimal diameter of round bar given the width and height of flat bar. Square Bar Minimum Diameter = Square Root of Flat Bar's Width and Height in Inches.
\(\sqrt{}\)80 * 39 = 55.85
The diameter of the bar is 55.85 KN
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True or False? For vehicles equipped with a limited-slip, or positive-traction, differential, check the
vehicle's VIN and service information for the proper replacement fluid to avoid damaging the unit.
Answers
The vehicles equipped with a limited-slip, or positive-traction, differential, check then vehicle's VIN and service information for the proper replacement fluid to avoid damaging the unit is true.
What does the VIN Share report service?The report provides comprehensive details about the car, including information on things like accident histories that you might have had trouble actually discovering. An identity card for your car, the VIN report. Because of its past. Since 1982, the database has kept track of every vehicle sold.The 17-character VIN serves as a unique identifier for the car and is made up of both capital letters and digits. The manufacturer, specifics, and distinctive characteristics of the car are shown by the VIN. It is possible to trace recalls, registrations, warranty claims, thefts, and insurance coverage using the VIN.To learn more about VIN report refer to:
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A site is underlain by a soil that has a unit weight of 118 lb/ft3. From laboratory shear strength tests that closely simulated the field conditions, the total stress parameters were measured to be C total = 250 lb/ft2 and φ total = 29°. Estimate the shear strength on a horizontal plane at a depth of 12 ft below the ground surface at this site in lbs/ sq ft
Answers
Answer: the shear strength at a depth of 12 ft is 1034.9015 lb/ft²
Explanation:
Given that;
Weight of soil r = 118 lb/ft³
stress parameter C = 250 lb/ft²
φ total = 29°
depth Z = 12 ft
The shear strength on a horizontal plane at a depth of 12ft
ζ = C + δtanφ
where δ = normal stress
normal stress δ = r × z = 118 × 12 = 1416
so
ζ = C + δtanφ
ζ = 250 + 1416(tan29°)
ζ = 250 + 1416(tan29°)
ζ = 250 + 784.9016
ζ = 1034.9015 lb/ft²
Therefore the shear strength at a depth of 12 ft is 1034.9015 lb/ft²
Engineered lumber should not be used for
A. finger-jointed studs.
B. plywood roof sheathing.
C. composite panel garage doors.
D. items that are in contact with concrete.
Answers
Answer:
Composite panel garage doors
Explanation:
Engineered lumber should not be used for composite panel garage doors. Hence, option C is correct.
What is a Pane lift garage door?Horizontal panels are connected to form a single garage door in panel lift doors, sometimes referred to as sectional doors. These panels have wheels attached to them that are positioned in tracks on either side and guide the door through a reasonably sharp turn to reposition it horizontally above the garage door opening.
Yes, however it's crucial to have a pro take their place for the finest outcomes. It can be unsafe for anybody other than a professional to install garage doors due to their complexity and difficulty.
One of the most affordable solutions on the market is an aluminum garage door. They are available in a variety of design options that can complement the exterior style of your home. Low-cost aluminum garage doors.
Thus, option C is correct.
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When driving a commercial motor vehicle safely, it is recommended that you leave at
least one second between your vehicle and the vehicle you are following for each
feet of your vehicle's length.
Answers
Answer:
If you are driving below 40 mph, you should leave at least one second for every 10 feet of vehicle length.
What's the relationship between energy and time
Answers
Answer:
The relationship between power, energy, and time can be described by the following equation : P = Δ E s y s Δ t. P is the average power output, measured in watts (W) ΔEsys is the net change in energy of the system in joules (J) - also known as work. Δt is the duration - how long the energy use takes - measured in seconds (s).
Explanation:
pacing pieces of information into groups to remember them better is called
a.
Visualizing
c.
Rhyming
b.
Keywording
d.
Categorizing
Please select the best answer from the choices provided
Answers
Answer:
D. Categorizing
Explanation:
pls mark me as your brainlist
Answer:
D
Explanation:
Indicate the correct statement about the effect of Reynolds number on the character of the flow over an object.
If Reynolds number is high enough the effect of viscosity is negligible and the fluid flows over the plate without sticking to the surface.
If Reynolds number increases the extent of the region around the object that is affected by viscosity decreases.
If Reynolds number is low enough the effect of viscosity is so high that there is a region near the plate where the fluid is stationary.
If Reynolds number increases the size of the region around the object that is affected by viscosity increases.
Answers
Answer:
If Reynolds number increases the extent of the region around the object that is affected by viscosity decreases.
Explanation:
Reynolds number is an important dimensionless parameter in fluid mechanics.
It is calculated as;
\(R_e__N} = \frac{\rho vd}{\mu}\)
where;
ρ is density
v is velocity
d is diameter
μ is viscosity
All these parameters are important in calculating Reynolds number and understanding of fluid flow over an object.
In aerodynamics, the higher the Reynolds number, the lesser the viscosity plays a role in the flow around the airfoil. As Reynolds number increases, the boundary layer gets thinner, which results in a lower drag. Or simply put, if Reynolds number increases the extent of the region around the object that is affected by viscosity decreases.
Air flows through a pipe at a rate of 200 L/s. The pipe consists of two sections of diameters 20 cm and 10 cm with a smooth reducing section that connects them. The pressure difference between the two pipe sections is measured by a water manometer. Neglecting frictional effects, if the inlet temperature of air is at 25oC, due to the compression of the air at neck of the pipe contraction, the outlet temperature is measured at 30oC, determine the differential height of water between the two pipe sections. Take the air density at 25oC and 35oC as 1.20 kg/m3 and 1.19 kg/m3 respectively.
Answers
The differential height between the two pipe sections is 0.05m
What is Differential HeightThe differential height of water between the two pipe sections can be calculated using the following equation:
h = (Q²*(ρ₂-ρ₁)/(A*g)) * (P₂-P₁)
where
h = differential height of water (m)
Q = volumetric flow rate (L/s)
ρ = density of air (kg/m3)
A = cross sectional area of pipe (m2)
g = gravitational acceleration (9.81 m/s2)
P = pressure (Pa)
Substituting the given values in the equation we get,
h = (200*(1.19-1.20)/(π*(0.1)2*9.81)) * (30-25)
h = 0.05 m
Hence, the differential height of water between the two pipe sections is 0.05 m.
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Cludadwy Chairs sells a patented seat that spectators can take to youth soccer games. The seat folds so it is small enough to fit in the glove box of most vehicles. The company operates a factory in Kansas and also contracts its manufacturing projects to small firms in Canada and Mexico.
An unusual problem has occurred for this small multinational company: People are getting confused about dates in internal memos, purchase orders, and email. When the company’s database was originally designed, the designer was not aware that the format for dates in Canada and Mexico was different from the format used in the United States. For example, in Canada and Mexico, the notation 7/1/19 indicates January 7, 2019, whereas in the United States the same notation indicates July 1, 2019. Although it seems like a small point, the date confusion has resulted in several order cancellations.
Cludadwy Chairs has asked for your advice. You could suggest writing a simple program to convert the dates automatically or design a switchboard command that would allow users to select a date format as data is entered. You realize, however, that Cludadwy Chairs might want to do business in other countries in the future. What would be the best course of action? Should the company adapt to the standard of each country, or should it maintain a single international format? What are the arguments for each option?
Answers
To avoid misunderstandings, errors, and to show respect for linguistic and cultural diversity, Cludadwy Chairs should adjust to the common date format of each nation in which it conducts business.
How do I change the date format in Excel on Windows 10 from mm DD YYYY to DD mm YYYY?To see the Format Cells dialogue, press Ctrl+1. Alternately, you can use the context menu when you right-click the selected cells and select Format Cells... The Number tab should be selected in the Format Cells window.
How can I modify a CSV file's date format?Press CTRL+1, Command+1, Control+1, or Control+1 on a Mac (if you are using Windows). There will be a Format Cells popup. Choose Number in the main tab (if it is not already selected),
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True/Falsethe port authority is the controlling organization responsible for providing the various maritime services required to bring ships alongside a pier or dock for cargo operations.
Answers
The given statement "The port authority is the controlling organization responsible for providing the various maritime services required to bring ships alongside a pier or dock for cargo operations" is True because they are responsible to manage the ports.
A port authority is an agency or organization that oversees, operates, and manages seaports and/or harbors. These authorities are tasked with ensuring that ports are functioning efficiently, are safe for ships to dock, and that the maritime activities taking place within them are in compliance with all regulations.
Maritime refers to the activities, industries, and businesses associated with the sea and seafaring trade. It pertains to activities that take place on or near the water, such as shipping, fishing, and leisure activities like boating and yachting. Maritime activities and industries are crucial components of international trade, and they are responsible for moving goods and people across oceans and around the world.
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How did inventors like lee deforest and edwin howard armstrong fund their initial research and development ventures into radio technologies?.
Answers
The creation of a "supersonic heterodyne" radio receiver circuit, later abbreviated to "superheterodyne," was Armstrong's greatest achievement during this time. This circuit, which is still widely used today, increased the sensitivity and selectivity of radio receivers.
When was the radio invented by Edwin Armstrong?
1933
The superheterodyne circuit, which he developed in 1918, is a very selective method of capturing, converting, and significantly amplification relatively weak, high frequency electromagnetic waves. His greatest accomplishment, wide-band frequency modulation, or FM radio, was created in 1933.
Following this achievement, the Patent Office approved de Forest's two patents for the ultra-audion and the regenerative circuit. He subsequently filed a lawsuit against Armstrong for violating his ultra-audion patents. The Pennsylvanian court ruled in de Forest's favor.
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in overcurrent protection, the use of a relay with an advanced inverse time delay allows one to skip the coordination steps.T/F
Answers
False.
In overcurrent protection, the use of a relay with an advanced inverse time delay does not allow one to skip the coordination steps. Coordination in overcurrent protection involves selecting appropriate protective devices (such as fuses or circuit breakers) and setting their time-current characteristics to ensure proper coordination and selective tripping of the protective devices.
The purpose of coordination is to establish a hierarchy among protective devices such that, in the event of a fault or overcurrent condition, only the device closest to the fault location trips, while upstream devices remain unaffected. This ensures that the fault is isolated and power is restored to the least affected area, minimizing downtime and reducing the impact of the fault on the electrical system.
While a relay with an advanced inverse time delay may offer more flexibility and precision in its time-current characteristics, it still requires coordination with other protective devices in the system. The coordination process involves analyzing the time-current curves of the protective devices and adjusting their settings to achieve proper coordination and selective operation.
Skipping the coordination steps can lead to improper or ineffective protection, with the potential for cascading faults or unnecessary tripping of devices. Therefore, it is important to perform the necessary coordination analysis and steps when designing and implementing overcurrent protection systems.
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Tammy, age 18 months, has a beach ball and a Nerf ball, and she knows what a basketball and a tennis ball are. When she encounters a golf ball for the first time, she mentally adds this new example to her "ball" scheme. Adding another example to an existing scheme is a process that Piaget called ________.
Answers
Answer:
Explanation:
The process that Piaget called "adding another example to an existing scheme" is called assimilation. Assimilation refers to the cognitive process of incorporating new information or experiences into existing mental schemas or frameworks. In this case, Tammy assimilates the new example of a golf ball into her existing "ball" scheme, expanding her understanding of what falls under the category of a ball.
Help!!
Which of the following describes the first and foremost guideline in dimensioning?
A. Legibility
B. Measurement
C. Accuracy
D. Sketching
Answers
Answer:
it should be accuracy
Explanation:
Answer:
option C
Explanation:
technician a says when diagnosing brake system troubles, the symptoms you should be use is improper braking action. technician b says when diagnosing brake system troubles, the symptoms you should be use is improper taillight operation. who is right? group of answer choices (a) a only. (b) b only. (c) both a and b. (d) neither a nor b.
Answers
Based on the information provided, we can logically deduce that technician A was right. Therefore, the correct answer is: a. A only.
How to diagnose a brake system?In order for a technician to diagnose a brake system, the following symptoms should be adequately and appropriately checked and used by the technician:
NoisesSmellsAbnormal brake pedal movements.Improper braking action.This ultimately implies that, a symptom you should use when diagnosing brake system troubles is improper braking action.
Read more on braking system here: https://brainly.com/question/24751467
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