Recent content by abhipatel

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    Frequency Vs Max Load current (Motor)

    ty russ...i believe the same too...how would we calculate what reduction is achieved though?
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    Frequency Vs Max Load current (Motor)

    all i want to ensure is i do not lose my blast wheel efficiency which is being run by the motor. All experts recommend running the wheel @90% to get max utilization. Blasting is controlled by amperes - with 50 HZ i can get 19-20 Amps easy (90% of 21 A) but when i bring the freq. down using...
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    Frequency Vs Max Load current (Motor)

    Have a 15 HP motor whose full load current (@ 50 Hz - India norms) is calculated at around 21 Amps. Have added a VFD (Variable Frequency drive) and would like to always run the machine @ 90% of full load current for maximum efficiency. Can anyone assist in helping me calculating full load...
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    Density of H20 @ 150 C & 600 psi

    Can anyone please show me how to look up Density of H20 @ 150 C & 600 psi pressure (Co2)... I found a water table which shows 916.69 kg/m^3 but it does not show anything @ pressure. Isnt density related to both pressure & temp.? What would be the difference in density if No gas was there...
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    Reversing Direction & Overheating Solutions for Single Phase AC Motor

    I have an AC Gearmotor W/Fan, Base Mnt, 100 rpm, 7 in-lbs Torque, 115 VAC - I need to achieve 2 purposes with it: 1. Need to able to reverse directions - can I do it with a DPDT? 2. It is overheating - how can I solve it -- heatsinks or fans? Any recommended ones -- I have never done that...
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    Heating Circuit troubleshooting

    Could you please help me in figuring how to run Line through the relay, then through the load to Neutral in the form of a schematic or maybe just edit my diagram?... I am still scratching my head and resorting to trial and errors...Thanks
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    Heating Circuit troubleshooting

    Am not much of an electrical guy but here it is in Word...see if it helps.
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    Heating Circuit troubleshooting

    Needed some guidance for my circuit: Have a circuit consisting of a microcontroller + SSR relay + load (heaters)...issue is when the temperature reaches cutoff the heaters are not getting stopped and temp. keeps on increasing... I have a connection of outputs from microcontroller into...
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    Why Does Water Boil at 155°C Under 600 psi Pressure?

    I think just evaporating because I can't see it boiling...The chamber size is quite big...and water measured would be like 100 mg max.
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    Why Does Water Boil at 155°C Under 600 psi Pressure?

    Boiling Point H20 @ 600 psi? According to the psychometric chart boiling point of water @ 600 psi is 252 C. I have a chamber with water inside (in forms of weight measured drops). I am purging CO2 at 600 psi in the chamber. After am heating the chamber to 155 deg C expecting the water to...
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    Buying - Lab Temperature Controller

    Hi I want to buy a scientific lab temperature controller with inputs for J-type thermocouple and consists of a standard circuitry of a solid state relay,controller,switch - all enclosed and pre-wired in an enclosure(plastic/metal). The purpose is not a hi-fi one so need one for a...
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    How do I draw a blueprint for adding L-shaped welds to a hollow cylinder?

    am bit confused...years since I have reviewed orthographic drawings...I have a hollow cylinder (say a pipe with inner & outer diameter) and I want to add 6 L-Shaped welds to its bottom to be able to weld it to a plate. I cannot figure out how to draw a blueprint for the same for the...
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    Connect pressure transducer o/p to gauge?

    Thanks, understand your confusion too ! The thing is the setup has outputs for a transducer but does not have a transducer so rather than spending the money to buy a new one I just wanted to connect it to a pressure gauge (cheaper one) as the intent is to only know the pressure and not...
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    Connect pressure transducer o/p to gauge?

    just some dilemma I ran into I have an experimental setup with a pressure transducer output connections (wires)...I deemed now that a pressure gauge alone will suffice. How do I connect the wires to a pressure gauge? Or do I need to re-do everything?
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    R Chart with probability limits

    Suppose we want to use probability limits with α = 0.002. What are the control limits for theX and R charts? Sample size is 5...All I want is how do we calculate R limits Solution : W 1 - α/2 = W0.999 = 5.483754 Just want to know what table he has referred to get this answer?
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