What is the function of attenuator in cro?

1196

My question is abt backlog.I had dropped one subject in my second year, and completed this subject in the 3rd attempt, so how many backlogs i have got?1 or 3?plz sujjest the answer as soon as possible

2101

Difference between field rheostat and armature rheostat.

1224

does buccholz in a transformer use batteries

4872

Define norton equivalent circuit?

1046

why ct's&pt'S out put called as burden,why compelsary short ckt the secondary of ct's while removing the burden?

2260

Why we use Electrical energy rather than any other type of energy, mostly? Explain behavior of open secondary CT and short circuited secondary PT in energized condition?

1864

We have drive feeding an output contactor for a 5000 hp motor @ 5kV application. The motor FLA is 629amps x 1.25% service factor = 786.25 amps The cable that we current have in place between the drive and the output contactor is 350kcmil- MV-105 (parallel cables). Per the NEC table 310.60 (C) (69). This show the cable ampacity is at 615 amps per cable for a rating of 1230 amps. We have derated the cable for the cable tray and the multiple cables application and our calculations show that after the correction factor factor we are at 922amps. 1230 amps x .75% correction factor factor = 922.5 amps. The customer is driving us to then use another safety factor of .25% off of the already derated cable. Can you please provide a longhand calculation for your solution on this application?

2150

Is it required to lay 2 runs of GI wires along with armoured cables from one power DB Machines of higher rating?

2022

what is a pulse transformer? how rise time of pulse changes when ever the voltage changes?

1953

Whether amorphous core transformer is available in India?.If available then up to what rating of voltage and KVA?.

1733

write encoder 17 pins details? pin a;b+, pin b;w+,..pin s & t. what is the meaning of b+, w+? explain;

2148

DG Earth Value?

2300

What will be the current drawn by HT motor, if low voltage is applied.. any formula to calculate the LT amps of HT motor.?

1449

What is the use of bundle conductors?

1180