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1answer
121 views

root locus of a system with two poles in the same place

One of the "rules" for sketching the root locus is that for k>0 the RL exists for every part where the number of poles and zeros is odd ("to the right of it"). If we take the simple transfer function <...
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votes
1answer
23 views

A sealed ball is not connected to anything externally, but can have any complex mechanism inside. Can the mass change? [closed]

A sealed ball is not connected to anything externally, but can have any complex mechanism inside (mechanical, chemical, or any other). Can a wireless trigger from a remote or any other wireless ...
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votes
1answer
30 views

how is the air pressure that exerted to our body cancels out?

i didn't understand it how the air pressure cancel out.my eye is so sensitive,and why is the air pressure that comes towards my face doesn't hurt my eye? why is our body doesn't feel a thing while the ...
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votes
4answers
3k views

Benefits and disadvantages of aluminium alloys as a replacement for structural steels in ships

My Answer. Benefits: The major advantage of aluminum in ship building is its strength to density ratio. Aluminum has high tensile strength with less weight, which results in lowering the weight of ...
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votes
2answers
51 views

Specialised Cup Washer

If I wanted to wash 10,000 identical plastic or glass cups a day, would I use a regular dishwasher or a specialised product designed to work with those specific cups.
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2answers
52 views

How to derive volumetric flow rate?

Given the mass flow rate in lbs/min, the specific gravity of a substance, the temperature in F, and the density in lbs/ft^3, what is the equation to derive the volumetric flow in Gallons/Min?
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votes
1answer
57 views

Tolerance of pin in Scissors

I'm currently designing scissors, and I have to describe the tolerance and fits of the parts. What kind of tolerance must be used for the pin holding the two blades together, though allowing for ...
-1
votes
1answer
237 views

Beams question help [closed]

I tried to solve this question I arrived at this diagram but taking the moments about the center of the beam I arrived at x=L/2. Can someone tell me what I need to do to get the correct answer?
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votes
1answer
49 views

Why is there a delay with railroad signals? [closed]

Ok so. When you look in videos(or in real life) with the railroad signals, when a train passes over it, it takes around 3 to 5 seconds for it to actually change to the correct aspect. What is up with ...
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votes
1answer
696 views

Retarding Force [closed]

I need help with the following question: A pile-driver has a hammer mass of 1000 kg which is dropped onto a pile from a height of 5 meters. The pile is driven 0.5 meters into the ground. The pile has ...
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votes
1answer
43 views

Would it be physically possible for rotating tank armor to move in front of an incoming projectile fast enough to intercept? [closed]

The core challenge of building a tank is deciding where to focus its armor and how much speed / cost you're willing to trade for protection, so this got me thinking, with modern detection technology, ...
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votes
1answer
39 views

Narrowest bandwidth RF filter [closed]

Most of the RF filters have a bandwidth 1 MHz or more. Mobiles have a 200 kHz bandwidth filter. What is the narrowest bandwidth possible for a RF filter?
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votes
1answer
201 views

How does an industrial engineer develop a process? [closed]

I would like to know what industrial engineers use for planning and developing a process: What is the most widely business analysis modeling language used (Think ...
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votes
1answer
34 views

Why do pumped storage hydroelectric facilities use bent pipes? [closed]

When a reservoir is used to store water for electricity, it's pipes are usually laid in several segments on the ground to reach its source, such as a lake. It seems that if the pipes went directly to ...
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votes
1answer
40 views

Need help to understand why something tips over and how to prevent it [closed]

I am designing a television stand for 55 inch television that weighs 24 kilograms. Now, i have made a stand and attached it to the back of the television. Now, what should be the weight of the stand ...
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votes
2answers
37 views

How to convert to date axis in excel?

Pic(1): I tried to make a chart with date axis. Pic(2): The right chart that I want to draw. I tried to change the axis properties, maximum & minimum values to 1/24 system, but it does not ...
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votes
1answer
424 views

Disadvantages of wire cut cnc edm

Before purchasing Wire cut cnc edm I just wants to know about disadvantages of it over using mechanical lathe machine.
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votes
1answer
24 views

Improving efficiency in automobileIC Engines [closed]

I think that the varying load in roads affect the efficiency of IC engines in large amounts. I am planning to do a mechanism which stores the power produced in IC engines mechanically, and then ...
-1
votes
1answer
225 views

Effect of arc welding on nearby electronic devices [closed]

Will an electronic device,say a smartphone or wifi router, get damaged if there is an arc welding going on in the vicinity? I am not talking about damage from direct contact with the fire/spark, but ...
-1
votes
1answer
95 views

Theory on tangential acceleration [closed]

b) I dont understand how to take the integration like its integral of ft from 0 to 2 pi = integral of velocity, and the integral of the first is the area under the graph= 8j and then I dont know how ...
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votes
1answer
94 views

What happens to the voltage? [closed]

Ohms law defines R = V / I, so according to this equation, when resistance increases, voltage and current decreases. Now i have two questions. Ain't there somekind of "pressure" buildup in front of a ...
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votes
1answer
174 views

How do Cogs and belts work? / Cogs and belts in an ICAS exam

Does the left red wheel turn in the same direction as the leftmost orange wheel?If so P and S go up? If not, Q and S go up? My reasoning: If so Leftmost orange cc Left red cc (by assumption) ...
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votes
1answer
73 views

What is someone talking about when they indicate a company is involved in assembling and sequencing of automobile wheels? [closed]

I'm not an engineer, but I'm doing some consulting work for a company that does this. While I don't need to know the specifics of what they do for what I am doing, I'd like to be able to talk about ...
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votes
1answer
75 views

Motor MnM torque max weight can spin circular object

Here's is my problem I am trying to spinal object at high speeds My motors watts is 242.42 My motor max speed is 70,000 rpm My circular rotating object that will be right on motor is 60grams My motor ...
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votes
1answer
97 views

How to cast and mold melt plastic to a shape and design you want?

I am trying to use plastic for a cheap and easy casting but I'm having trouble in molding it to any given shape. I'm trying to see if I can make a spark plug and want to cast out a model for measuring ...
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votes
2answers
370 views

How to get remove water from a submarine that is submerged

How can water be removed from a submarine that is submerged? If a submarine is opened, while it is submerged, water would get in because of the difference between the pressures. For example, I have ...
-1
votes
1answer
65 views

What do Rear-End Collision Avoidance System do on Ice?

I read on itworld.com: Companies such as Volvo and Mercedes are working on crash avoidance systems. Radar measures the distance to obstacles ahead of the car, and if one comes too close the system ...
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votes
1answer
20 views

Doubt on power generation by hydraliuc turbine [closed]

What happened to the final power generation if the hydraliuc turbine rotates discontinously for example if a turbine runner rotates with 2000 rpm for 2 minutes and stop rotating for 4 seconds and ...
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votes
1answer
53 views

Can a mechanic pull apart a strong bolt by hand power alone with an ordinary wrench? [closed]

I am wondering whether a typical mechanic can break a bolt using a wrench. For example, let's say the wrench is 15" long and the force is applied at a radius of 13". The mechanic applies a force of ...
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votes
3answers
275 views

What would be the adverse effect on the human body travelling at 1000km/h?

Will Hyper loop succeed as a means of human transportation? What would be the adverse effect on the human body travelling at 1000km/h?
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votes
2answers
67 views

Can we use Gravitation Force for Generation of Free electricity? [closed]

How we can generate free electricity constantly? with the help of magnetic field we can generate free electricity but its amount is very less, also with the help of eccentric load we can generate free ...
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votes
1answer
30 views

Project on rain detection and home automation system

I am doing a project on rain detection and closing of windows. It is school based project. I am using an arduino, a rain sensor and a motor. Kindly advice on the right motor to use. And also, do I ...
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votes
1answer
44 views

Fighting airplane fire on runway [closed]

Fire broke out from wing of an airliner after emergency landing. All were safely evacuated. In this video, video, fire engines, standing by on run way as pilot have maydayed, rushed pass the ...
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votes
1answer
208 views

Heat Transfer, with energy generation

I have a study question that I am not able to solve: A cylindrical electrical resistance is used to heat water. Radius is 2 mm and the length is 80 cm. Electrical conductivity of the ...
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votes
1answer
91 views

Need motion equations for falling ball for simulating

I am currently MS student in artificial intelligence (AI) and working on my thesis on reinforcement learning, which robot should learn by itself how to control a quadcopter. Long story short, I have ...
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votes
1answer
70 views

Are tires of a soprts car small in size for low ground clearance? [closed]

since the ground clearance of a sports car is low. Do we use small tires for them?
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votes
1answer
228 views

Aerodynamical forces - downforce

I have heard that car weight (for more friction = more stability and higher traction) is being increased when driving by a force called aerodynamic down-force which causes additional force on the car ...
-1
votes
1answer
1k views

Reduction of a simple distributed loading

This is the question, but with me 6 kN/m is 4 kN/m and 2 kN/m is 2.5 kN/m. And the length is not 4 but 9 metres. I am not yet at the chapter of equations of equilibrium, plus it says the couple ...
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votes
1answer
1k views

How is the mass of air in the intake manifold calculated in an electronically fuel injected vehicle?

I am considering a two wheeler petrol engine. How is the mass of air entering the intake manifold calculated? Given that I have: Manifold Absolute Pressure sensor Intake Air Tmperature sensor ...
-1
votes
1answer
124 views

Find net work on the system [closed]

I am trying to solve the following problem. If someone can just point me in the right direction it would be appreciated. I don't have the textbook and online resources are proving to be absolutely ...
-1
votes
1answer
158 views

Pivot Point Equations [closed]

Assume we have a platform fixed to a pivot point: We use 2 rods, either side of the pivot point, but at different distances from it. If we were to lift ROD 1 by a certain amount, how much would ROD ...
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votes
0answers
12 views

How can I establish as much airflow from my house to outdoors as possible?

I live in a small flat with all doors and windows sealed. The temperature outside is moderately cold. I assume the temperature in my flat is hotter because my body and the computer are emitting ...
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votes
0answers
5 views

interleaved active clamp flyback converter

as per the figure we provides a dc voltage as a input to the interleaved active clamp flyback converter block, provide a PWM signal to the MOSFET which is in interleaved block for switching purpose. ...
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votes
0answers
12 views

What object characteristics may cause significant distance measurement deviations in Sharp optical sensors?

Not sure if this is the right place to ask this question, but anyways. I'm not very fond of circuits and stuff, but I've got a test question I really need to answer. The question is in the title, ...
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votes
0answers
18 views

Solution of st venant equations using fortran

I tried to write code to solve st venant continuity and momentum equations in FORTRAN 90, with given slope and rainfall and find out the discharge. But I stuck in the procedure to find overland flow ...
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votes
0answers
16 views

U tube manometer problems

A U-tube containing mercury is used to measure the pressure of an oil of specific gravity 0.8 as shown in Fig. 2.43. Calculate the pressure of the oil, if the difference of mercury level be 0.5 m.
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votes
1answer
34 views

Way to digitally measure volume of air inhaled by lungs?

I was interested in this as a fun project. To be able to get the volume of air inhaled by a person has some cool applications I can think of. I was thinking of a modified anemometer of sorts fitted ...
-1
votes
1answer
40 views

control systems vs artificial intelligence?(in nut shell for beginners)

i am confused in basic difference between control systems & artificial intelligence? since both techniques can be used for automation Please kindly try to give answer in nutshell depth/detail ...
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votes
1answer
87 views

Is the core of an RBMK reactor submersed in coolant?

I have looked at many diagrams of the Chernobyl reactor and am wondering where the coolant comes from that enters the control rod channels when the control rods are raised. All the diagrams show ...
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votes
2answers
39 views

What does stress analysis of 3D printed parts reveal vs their normal counterparts?

I have seen videos or heard about 3D printed buildings, 3D printed space shuttle parts and more. There seems to be a lot of craze developing around 3D printed manufacturing. I have never heard anyone ...

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