The rear roof light in grandsons car has a diode connected in series with a 10watt filament lamp. As the is a 12 dc circuit I’m at a loss to see what duty this diode has. It is clearly forword biased as the lamp works, reversed bias = no light.
Can someone offer an explanation please.
Hi Forum.
Can any one offer an explanation of the following data taken from Ormazabal CMP-F 36kV switch fuse.
"Ip/Ik ; 20/50kA (after fuse 1/25kA) tk ; 3 s"
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I am seeking advice on vibration. We have a vertical spindle pump motor 1385kW 3300 volt six pole squirrel cage constuction DOL(one of three). On test in the repair shop the balance is fine(no load)Top bearing 0.9mm/sec, bottom bearing 3.4mm/sec (different power supply). On it's...
Hi Forum. This question may be ABC for you guys but I am interested in installing a domestic air/air heat pump in the UK (latitude 52N). While there seems to be lots of manufacturers in the wide world there seems to be very little activity here. This is an initial probe in this area and would...
Hi Automotive Forum.
Can any body offer an explanation to an Electrical Eng the reason for the following issue. The servo brakes when "pumped" with the petrol engine off become very solid with very little pedal movement no matter how heavy the pedal pressure ie without servo assistance. With...
Hi Forum. I have been asked to comment on protection failures following an explosion which destroyed a 6.6kV 400kVAr PFC bank. I can explain the protection issues but would welcome some thoughts on the PFC failure. The site is connected at 33kV via a short 33kV cable from the 132/33kV BSP which...
Can any Military Engineer please resolve a long held question for an unknowing Electrical Engineer. I have often wondered how the rifling is achived in both small and large bore gun. Indeed how is the barrel bored.
One further question on the same subject is what is the larger mid section on...
