# All Questions

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### Effect of high frequency welding near by the electronic things

I have high frequency welding machine. During the welding time, I can see a wave in my lap and computer and also that time stuck my computer.Can you please help to solve this problem?
11 views

### What is the effect of different ways to adding liquid materials into a mixing tank?

I am working with body wash products and there is a problem happening with the mixing process. I use a 5000-liter tank to mix all the liquid materials including water, surfactant and preservatives. ...
9 views

### Is it ok for clutch to slip in DCT in certain situations?

When driving a car with manual transmission on start you slowly release the clutch so the car doesn't jerk. So clutch slippage here is not that bad if I understand this correctly? And also couldn't ...
5 views

### Why does rebar in reinforced pre-stressed conrete reduce in deflection if compressive stress is applied to member?

According to What is Prestressed Concrete? - Practical Engineering, one way to reduce deflection in the steel rebar is to pre-stress the rebar by applying compressive stress in the member before ...
29 views

### Elution from an Ion Exchange Column

I am using concentrated NaCl(10%) to elute Cobalt (II) ions from a cationic exchange column. How would I determine the volumetric flowrate of regenerant needed to completely elute the cobalt ions from ...
3 views

### Minor losses in a header

I need to calculate the minor losses in a steam header. I have calculated the major friction losses. But I can't figure out how to find the minor losses since the header has multiple tappings and not ...
35 views

### Calculating max weight capacity of brushless motor

I am having trouble determining the maximum weight capacity a motor can handle. I provided the specs below. The calculations are for the top row or the 580KV model. So to start off,I'm only taking ...
20 views

### Why doesn't the flow of current through the conductors in the rotor of a fan affect it?

The rotor of fan is shown as a series of circles arranged in a circular manner. From youtube videos, I came to know that this is sort of a top view and the circles actually represent conductors ...
383 views

### When calculating a force, why do I get different result when I try to calculate via torque vs via sum of forces at an axis?

If I just do it by writing that the sum on y axis is 0 I get $100+x=200$ $x=100$ If I try torque around the top: $x*800=200*500$ $x=125$ So what am I doing wrong?
60 views

### Coating brass components cheaply

I have seen a number of products made of brass with a silver-looking coating covering the brass on the outside. These products are all quite cheap (for example a small watering can or clothes hooks). ...