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Engineering : Recent Questions and Answers (Page 42)

Find answers to your questions about Engineering or help others by answering their Engineering questions.

Lifting a cabinet using actuators or scissor lift

Disclaimer: I am not an engineer - just a DIY guy looking for some advice or help please, so please forgive me if I use incorrect terminology :) I am...

Asked on 04/27/2021 by maGz

2 answer

250W 24V Motors

(please note that this is a duplicate of a question the electrical forum, however, there are some mechanical subjects that would be better suited here.) I am trying to make...

Asked on 04/27/2021 by Cyrus Murray

2 answer

Mesh Wifi Router Network for a Small Village

I was wondering if its possible to create mesh network of WiFi for relatively large area? I am talking about the size of small village (~20km2). The idea is to...

Asked on 04/27/2021 by gijoe

0 answer

How problematic is it to run vapor saturated liquid through a scroll pump?

I see that scroll pumps often have "Vapor ratings" of something like N Liters of water per hour. I know in rotary-vane pumps, it's a big no-no to run any...

Asked on 04/26/2021 by Sargun Dhillon

0 answer

Overcurrent protection, limit for nominal current or stall?

Background: I'm currently working on a robotics design that will drill through soil. I have selected a 48V motor who's nominal current is 3.17A and has a stall current of...

Asked on 04/25/2021

0 answer

How to calculate the deflection of beam that is reinforced through formula?

Example an aluminium tube reinforced with steel tube inside. 100*50*2mm thick aluminium with 80*40*3mm MS tube...

Asked on 04/24/2021 by Lijo

2 answer

Is this dropout design as bad as I think?

I bought a 1990's steel mountain bike a few weeks ago and I have some concerns about the design of the rear dropout, pictured here: ...

Asked on 04/24/2021 by Morgan087

4 answer

How can propeller blades be made silent?

In particular drone propeller blades. I read that the noise we hear is the propeller compressing the air at the edge of it to produce a sonic boom. Is that...

Asked on 04/22/2021 by user11937382

2 answer

Can you shape a buoyant object stuck to the bottom of a body of water such that it floats?

I understand that an object, say a closed plastic cube full of air, stuck to the bottom of an aquarium with a smooth glass bottom will not float if you...

Asked on 04/22/2021 by doctorremulac3

3 answer

Question in finding the direction of forces in a truss

This question primarily involves finding the direction of forces in a truss. Let's give a scenario in Method of Joints One source I found says that in finding the direction...

Asked on 04/22/2021 by TrussQuestion

1 answer

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