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extremely urgent please, why a fuse is used before voltmeter but not with a ammeter connected to a CT(current transformer),thanks in anticipation.
4 9957We 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?
2101watt meter have 4 terminals what there name??? and what theses 4 terminals indicates ?? and why 2 terminals are short circuited??
1 6262what is the difference between single ratio, multiple core and multiple ratio, multiple core ? please explain.
NTPC,
2152why the 4 terminal are named as main, line, common, voltage (M, L, C, v) of a wattmeter?? why not its nameed as A,B,C,D??
6 45314Hi,, Just I want ask, if the power factor decrease what happen in voltage regulation? Thanks..
1 3584Post New Electrical Engineering Questions
is all the servo motors having brake?please specify which servo motors having brake for stop on position and which are not.
wat is the first thing dat is needed, 2 lay a cable in some area??
1.Z transform always lies around ? a) origin b) pole c) zero d) z=1. Multiples Mcqs which is bother me can’t find answers on internet. Some help required with little explanation . Note: this is not homework or related to any test. Thanks
why the starting voltage drop in a cable needs to be limited?what is percentage of the voltage drop allowed during starting?
What do you mean by lighting transformer?
why genarator genarating voltage 11 KV?
what happen if drive input fail momentry at 48.5 HZ frequency?
what are pilot cells
When we giving the 3 phase supply to ups system how to coming netural?
I had applied for JE in PSEB, Can you pls send me the Question bank for related to my field
In HVDC LINE RECTIFIER CONTROL ON CONSTANT CURRENT AND INVERTER CONTROL CONSTANT EXITATION ANGLE CONTROL BUT HOW INVERTER CONTROL CONSTANT CURRENT?
please give me all the Alarm .Trip ,Safety Relays & Conditions of Diesel-generators mail me on ashokbabunhce@gmail.com
why does a dc machine has high efficiency while working as a generator than as a motor ..
Hi,iam a diploma in electrical engineering.rtd from indian air force in apr 2007.prsently working in reliance next link as a network maintenance engineer since 2007,can i get a job in motherson sumi.
please tell me, how i clear the objective test? when i studied form the one book after i solved the objective ,that time i solved that qes. but if i tried solve objective form the other book then i could not solved these que.
