Load Definition and 1000 Threads

How is the following question done? Homework Statement An offset link is connected to 2 cables like shown in the image attached. The offset link has a width 'w', of 200mm (or 0.2m) and a thickness of 35mm (or 0.035m). It has an allowable normal stress of 74 MPa. What is the maximum...

I know that in general generators under-load will eventually slow down because of the load... Question is... When I have a small generator that produces 100W and a load that is 80 W and mechanical Input rated in (W) about 110W. Due to losses the generator can only generate 100W of electricity...

My lecturer, in the notes he provided to us mentioned that low load factor of a distribution transformer results in higher system losses and voltage drops. I thought the by higher system losses he means the iron losses in transformer which is comparably higher in no-load and lower load...

Hello everybody, I have been here before, with different username and cause i didn't log into long time ago, the username doesn't work for m now, so here i am with the new user. Just as a respect for the forum rules, to not post a topic once i register. i am doing cooling load...

Hi Guys, How much force will I need to lift 5000 kg block and how much force will be acting on the pivot point? I know how to calculate a normal lever but couldn't find any formula for lever with load evenly spread as per the attached diagram. see the attached diagram Thanks

Hi, I have one 2500KVA transformer with 11kV/433V. The maximum current at low voltage side for this transformer provided by producer is up to 3333.49A. Currently, this transformer is running with 2700A which is about 80% of transformer usage and the temperature of the transformer has reached to...

I am drawing 12 volts at 1/2 amp for 6 hours a day off of one 12 volt car battery battery which is powered by a 2 amp solar charger voltage goes to almost 14 volts when charging I then added two more car batteries voltage is under 13 volts when charging with the same load is it better to use...

Hello, I am new here so I apologize in advance if my question is not formatted as it should. I have an application where a large pressurized vessel is releasing part of its contents (gaseous) into an "empty" container (air), much smaller, that is at atmospheric pressure. I need to know if the...

[First post here, please make allowances..] I want to use a triac as a solid-state SPST switch for a normal 120VAC receptacle. The on/off state will be controlled by a low-voltage DC circuit through an opto-isolation MOC3020. http://ken.coar.org/images/opto-triac.png So far so good...

I was told that lubricating the interface of a thrust roller and kiln tire with graphite would reduce the thrust load since the source of the load in the traction. I need some help understanding this concept. Thanks.

I have no idea how to calculate the bushing load which is stated in catalogues in unit N/mm^2 and KgF/cm^2. Anyone knows how?

Homework Statement A mild steel column has a cross section of 100mm by 50mm. Assuming a safety factor of 6 calculate the load that it can safely support. Homework Equations Column material: mild steel Column cross section: 100mm x 50mm Safety factor: 6 On the basis that the...

Homework Statement A beam has a solid square cross section of 100mm and is simply supported by two supports 3m apart. Calculate the dead load that can be safely supported when applied to the middle of the beam. Homework Equations Solid square cross section of beam: 100mm Material...

help with this problem -- finding power transfer to R load :) http://img99.imageshack.us/img99/610/08072012060.jpg i want help with finding V[SIZE="1"]th and finding power transfer to R load thanks all

I was trying to solve a question where they told me to find the buckling load of a wing strut in a plane that experiences a compressive load along its axis. The strut can be considered to be a pin-jointed at both ends. Dimensions of the strut is as follows: outside diameter is 150 mm and...

Homework Statement A mild steel column has a cross section of 100m by 50mm. Assuming a safety factor of 6 calculate the load that it can safely support Homework Equations W=A*δ The Attempt at a Solution δ=470 N/mm2*0,1667= 78,34 mm2 A=100mm*50mm=5000mm2 W =5000*...

Homework Statement A beam has a solid square cross section of 100mm and is simply supported by two supports 3m apart. Calculate the dead load that can be safely supported when applied to the middle of the beam. Homework Equations Dead Load= volume * weight of material The...

Hi Every One, I am working on the Class E DC-DC converters. My circuit is working good for full load (RL-load resistor) and also giving the 90% of efficiency. But, the problem is that how to maintained the output voltage is constant by changing the load resistance from full load to no load...

For a no load ideal transformer V1 is anti phase with E1? or in phase like this?

I'm coming into a university this fall as a junior after completing ALL of my general education requirements, which puts me in somewhat of an odd position. I literally have no courses left to take except for ones in physics and math, so that's definitely a plus. However, I haven't been able to...

load bearing of 2" alluminum square tubing im trying to build a load bearing beam out of 2" alluminum tubing 1/8 in walls can anyone tell me the weight a length 8feet long could bear befor bending its aa6061 T6 what would it hold befor bending? keep in mind math is not my cup of tea lol

My situation is i have a 10kg battery that is mounted on top of a plastic material. How would i exactly calculate the right thickness for the plastic to support the 10kg battery?

Hello everybody! I'm trying to write a car simulation but I'm having problems with precisely calculating the acceleration / velocity of the car's wheel. Currently the simulation works as if the Car was lifted in the air, so there is no load (vertical force) on the Wheel. What I have so far...

Homework Statement Show that V across Resistor Rkohms is: (11R) / (3.96 + 4R) V The circuit is a 5V cell in series with a 1.8k resistor. Following the 1.8k resistor are a 2.2k and Rk resistor in parallel with each other. The wires then rejoin and return to the cell.Current through the circuit...

Greetings, I will describe the problem and my proposed solution which leads me to the load bearing question.. Problem: Pickup camper cabover floor is compromised where it attaches to the driver side sidewall, i.e., separation of floor from sidewall due to some dryrot and a blowout doing...

Homework Statement Homework Equations P = EI pi^2 / Leff radius of gyration: SQRT (I/A), slenderness ratio: Leff/r The Attempt at a Solution So I've found Ixx = 240.81 x 10^6 mm^4, Iyy = 71.9 x 10^6 A = 9600 finding the radiuses of gyration rx = 158.38, ry = 86.54 effective length of...

Scenario- I'm riding a bike up a mountain road, at a constant speed of 5 mph, at a constant grade of 11%. The bike plus me (and all gear) weighs in at 200 pounds. Based on this (and excluding frictional losses, wind, etc.) how much TOTAL pressure, in pounds is on the chain? Would it be...

I think I have a rough idea how to get there...but I'm not sure. Let's assume I'm riding a bicycle, and I'm peddling at a constant pressure (torque). This is a peddling pressure which would be the exact amount which would just lift a 50 pound weight off the ground and hold it there...

Hi there, electrician in need of some mechanical study help. The question I have is, A beam has a solid cross sectional area of 100mm and is simply supported by 2 supports 3m apart. Calculate the dead load that can be safely supported when applied to the middle of the beam. The only...

I've never read this explicitly, but here is what I've concluded: If you could somehow have a perfectly balanced load on the circuits in your home to each of the 2 hot lines coming into your residence from the pole mounted transformer, this would mean: The neutral wire connected from your...

So I have a question that I have to answer that goes like: 1) Give some examples of practical situations where it is desirable to maximize the power delivered to the load. This is in reference to A.C Power analysis and understanding maximum power output is achieved when the the Thevenin...

My car has a problem that there is some sort of load on the battery even when the engine is off. So the battery slowly drains with time. If left for more than a couple of weeks, the battery will be too drained to start the car. I had this happen to me, and so I bought a mobile booster pack...

Can anyone offer a method or location of a method for determining the permissible axial load that can be applied to an internal thread? i.e. Take a nut and screw into it two bolts, one from either end so they meet in the middle of the nut, then apply a tension force across the two bolts. How...

I've done part a) and b) but I have no idea where to even begin with part c) on figuring out the loading on the idler!

Homework Statement Determine allowable load on steel tube L= 14 in A= 11 in ^2 Es= 30 x10^6 θ=24,000 psi δ= .008 Homework Equations δ=PL/EA θ=P/A The Attempt at a Solution .008=P(14 in)/(30 x 10^6)(11 in)^2 P=188571.4 lb θ=P/A 24,000 psi=P/11 in^2 P=264,000...

I am attempting to determine a method for calculating the final pressure in a deformable bladder given a starting pressure and an applied load. Scenario: This is actual data gathered in my lab: A) You have a ball made from a rubbery material with P1=3psi. You weigh 150lbs and step on...

The energy stored on a charged capacitor is 0.5*Q*V or 0.5*C*V2 BUT what is the electrical work done by the supply as it transfers the charge to the capacitor? I have heard two answers: W=QV and W=0.5*QV the first answer implies, i think, that energy is required to move charges against...

Hello I'm tasked to evaluate the roof of a small power station situated beneath a rather high tower in an alpine landscape, by means of FEA. One requirement is that the roof shall endure chunks of ice falling on it. Problem is, I am stumped as how to find the loads. The Eurocode norms I am...

Homework Statement Calculate the load on each member Homework Equations \sum \tau=0 -because it isn't rotating. \sum F =0 - because it isn't moving. \tau = Fd\sin \theta - to take the torque at any point The Attempt at a Solution I can calculate the torques at each point. I...

Hey does anyone know much about Google ads? There's a site that I loooove but it takes ~30s to load. This seems outrageously excessive. It makes me suspect that something's not optimized as well as it could be. I've talked the owner but he's not really knowledgeable about the technicalities...

Hello, I am an Electrical Engineering Technologist student and we have a design project that i am trying to understand. We are feeding apartment units with 82A of 120V and 68A of 208V. I am going to feed each with two phase lines and a neutral. What I am not sure about is if the 68A of...

Why is it easier to push a load on a wooden crate on wheels when you are nearer the load and the lever is shorter and at a sharp angle compared to pushing a load with the lever lengthened and at a more relaxed angle with your body further away?

A person with mass 55kg walks at a constant speed up a set of stairs with 20 steps, each 20 cm high. I have to find the work load. Formula: W=FxD where F is force and D is displacement. The book says my answer should be 2.2x10^3. OR 2,200 Joules. I really don't know how to do...

How can I double the voltage through a 3 ohm load with a voltage doubler when the output voltage usually collapses due to low load resistances. I have a feeling it is due to capacitance values and frequency. Can someone please explain.

Homework Statement A 12V battery has an internal resistance of 6Ω. a) If this battery is connected to a 10Ω load, calculate the power dissipated by the load. b) Draw a graph showing how the terminal voltage of the battery and the current it can supply vary with load. c) Derive a value...

Help finding the load impedance of a transmission line? How do you find the load impedance of a transmission line?

Please redirect if this post is not in the right place. I want to install a jib crane in my shop. Vertical upright is planned to be a 5" H-beam in concrete, with 12' above ground, 4' into rock below grade level. Horizontal beam will be same, 10' long. (See attached figure) Am trying...

I'm hoping someone can help me. I have only a rudimentary knowledge of physics, but have strong scientific instincts, as well as a background in science, but not physics. Our rowing team recently has engaged in a debate about the distribution of a load while carrying a heavy rowing scull...

I am done with all my core classes and only need the PE classes. What would be a good course load per semester?

I'm going to be a first year grad student in the Fall. What is a typical course load in grad school? I will be leading recitation for 2 hours a week, plus 2-3 hours of "office" hours. I know most people take 12-15 or so hours during underdrad, but this seems like too many for grad school. I was...