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why the cut in voltage of the LED is higher then diode? WHAt is the reason of not using the LED in the rectifier circuit
2 10294Why we are designed only 11Kv and 6.6Kv Alternators, not 33Kv Alternators and Power Transmission side we are designed only 220kv, 120kv, 66kv, 33kv, 11kv, and 440volts, not 20kv, 50kv, 100kv.
2 7216how can we determine the quantity of steel bars in a structure? is there any formula for determing the number of bars required ?
3 26500what is the difference between zener diode n tunnel diode in terms of their breakdown??????????
Bhel,
1 22073types of stainless steel.why does this called stainless.what is passivation related to SS? What is sensitisation in stainless? Examples of diffrent type of steel e.g. austenatic,martensite,ferritic etc. 304,303,316. How to get rid of carbide formation in SS and stablization in SS.(347 etc.)Different type of heat treatments. Iron carbon diagram. Nelson chart with respect to corosion. Diffrent type of corosion and causes. Carbon equvalent number. Welding related questions.(requirement of post and pre heating in welding). welding of SS. If you have pre experience in maintenance then Material and welding related questions will be there. Then various types equipment in plant (a) static (b) rotatic in pumps and compressor,turbines funda of balance drum and balance disc, balancing line. Impulse wheel, wheel chamber pressure and its effect on turbone health if this increases. Thermal expansion of turbines and with respect to how foundation bolting are designed. Fixing of lower casing before dismantling. Most important shaft alignment and balancing of rotating equipment,classification of static and rotatic equpment used in process plants. Materials for diffrent services as refinery plants fertilizer plants, cement plants, sulphur plants, crude oil with higher sulphur services, then third important thing is codes, standards and recommended practices of diffrent organisation like ASTM,ASME,API,TEMA,BIS,IS,ISO,NPFA,OISD etc. diffrent type of work permit systems fire and safety point of view.
1 5379
Tell us what is clipping?
What is componsation
Explain the functioning of diode?
i am an maintenance engineer. one distribution board have 5 feeder. recently its ELR trips frequently, but it take some times after trip( 10min,20min..)but 3 feeder no load. two feeder only loaded. i checked one feeder IR value all values are above 50Mohm.but B phase to Earth is only 9Mohm.any problem about low value
How can hexavalent chromium be removed from aqueous waste streams?
Explain how to measure frequency without cro?
What is meant by transmissivity?
Define what kind of cleaning substance or treatments keep or help prevent cast iron from rusting?
SIR,i am applying for the jr.engineer(signal)post.kindly if you send some previos sample question -answer i will be higly obliged
explain about Dacca saris.
bsnl tta exam question
What is astm?
how to find the L shape surface of the moment of inertia and section modulus.
what is the use of permanent magnet generator in exciter
difference between crane drive and line drive.
