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When calculating the speed of a rotor required for a particular frequency of synchronous generator we use the equation 60f/p Is this p is the number of pole pairs of rotor & do we consider the number of pole pairs in the stator is 1?
UOM,
1 2096Importance of fault current in power transformers and how to monitor the same? How is it different from winding temperature?
1 1918What is given by the definition in BIL IMP/PF = 950/395 kV. This was found in a name plate of a power transformer.
AES,
1 2454is this the formula of building wiring to get the main breaker.Watts/volts*.8%+higher motor*(25%)=ampere. yes or no or send the correct formula for building wiring.
1 1785What will be the output of an alternator ,if the field current is single phase ac supply.
DRDO,
1 3465Which rccb 30ma,100ma,300ma sensitivity should be used in domestic line and what is difference, advantage and disadvantage of all three
2 21775sir, in a industry present pf is 0.54 pf 25hp power is there its want improve 0.9 pf. which suitable capacity capacitor is suitable please inform me.
2 3886Post New Electrical Engineering Questions
if any body have question paper of railway (section engineering),then plz send me .i will thank of him/her.
please send the last 5 years {{{JUNIOR ENGINEER - ELECTICAL, ELECTRONICS RRB CHENNAI and secundrabad}}} TECHNICAL question papers TO MY EMAIL ID dinesh100701@gmail.com
How can we calculate the motor frame sizes?
What types of high speed CMOS circuits have you designed?
send me any model test paper of clerical post of state bank of india.......
Sir, I have applied for the of Assistant.engineer of NPDCL. please send me all AP TRANSCO AND JENCO solved papers of previous exams . I requested send me the papers to my id as soon as possible (rajanikanth_peddi@yahoo.co.in) (This is very urgent) Thank You,
Don't you have similar question banks related to Oral Certification Examination conducted by Mercantile Marine Departments / Directorate of Shipping, Ministry of Shipping for Electro Technical Officer?
What is the basic principal, by which DC voltage level is increased more than the supplied AC voltage during conversion. As upto AC level it is contorrled by firing anlge but after maximum level how is it possible.Please clear picture. OR we have to supply the higher level AC?
what is the condition for YnD11
How I can Compare 120v/60Hz versus 220v/50Hz ? Please tell me both advantage and disadvantage ......
A 15 kw squirrel cage motor having a maximum efficiency of 90% on a continuous full load has temperature rise of 42 degrees celcius after 30 min and 52 degrees celcius after 1 hr under the above operation conditions. a) calculate its final steady state temperature rise on continuous load and the heating time constatnt. b) if the motor is operated on a short load for 9 min estimate its temperature rise. c) calculate the maximum overload that can be applied on a short, 9 min rating so that the temperature rise is the same as the final steady state temperature rise on continuous load.
I HAVE BEEN SELECTED FOR APGENCO A.E(ELECTRICAL) 2008.HOW MUCH WEIGHTAGE FOR INTERVIEW AND WRITTEN TEST.HOW I HAVE TO PREPARE. PLEASE GIVE INFORMATION IF U KNOW.WHAT ABT G.D THIS TIME.CALL RATIO 1:2
If a current -8+6sin6t is flowing three ammeter, one is a centre zero PMMC meter, one is true rms meter and one is moving iron meter. What are the reading of these three meter respectively?
sir please send me iocl written test paper in my e-mail account. i'll be obliged to you........ thank u roshan
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