How are calculated the aluminium busbar cross section area?2 5901
Are same transformer be employed for step up and step down services?3 2753
On what basis primary and secondary of a transformer is chosen?2 2222
how to male a d.c bettery to blow a 230v bulb?1 1971
Can a 50-Hz designed transformer be used at 60-Hz system? Is the same remains true, when a 60-Hz designed transformer be used at 50-Hz system? Consider only frequency variation. The voltage remains as rated value in all cases. Justify the answer.2 4651
Hello, im taking an introduction to PLC..and i'm having a hard time on creating a program for 2 lamps blinking alternately with this button characteristics: 1.) One push button (starts upon pressing) 2.) Same push button (when pressed again, will pause the system) 3.) Same push button (when pressed again, will continue the paused system) 4.) Same push button (when pressed within 2 seconds, will shut off the system) Pls..i know this is just a simple problem for you guys..2 1544
In n high voltage 11kv system What happened if 1 of CT cable (IDMT) loose.Will e/f or o/c trip.please explain detail1 1914
In UPFC,What is the need for Dc link ( DC capatior)?1 2522
Can a transformer designed for a particular voltage and frequency rating be used for different set of mentioned ratings? Assume that the winding does not get burnt because of overheating at higher voltage. If yes, then under which constraint it is possible?1 1123
what is basically a pulse transformer?1 4789
whose motors self starting synchronous or Induction motor?give fact reason why not self starting another mother2 2303
In motors how many types of cooling systems were used?
what is vA rating and class of a ct.
how you will decide the distance between the power transformer and its fencing
what is the preventive maintence for ht panels and busbars and vcb abd acb's.
In Dyn11 power transformer if any one of the 3 phases connected to earth in star connected side then please explain effect of the current flow in delta connected side of transformer.(In this case if one phase is shorted to ground in star connected side then we observe the current flow in two phases only not three phases in delta connected primary side. Please explain why it is so?)
A 3-phase IM is supplied from 50 Hz system. It runs at speed of 1440 rpm and slip equal to 4 %. Calculate number of pole pairs. A 1 B 6 C 2 D 3
in the directional overcurrent and earthfault protection,normally we are setting the angle 45 deg lead for phase fault overcurrent and -45 deg lead for earthfault fro forward direction.but both the fault are operating on the same angle region only.why?how the relay will response?
how we findout a ignater is faulty or not?
what is the prinsiple of dc motor and construction and working ,application of dc motor.
how to select automotive wire by mathematical equation with given current, vlotage and resistance
What is the direction of current flow in ct secondary...means if the current is flowing from P1 to P2 then what will be the direction of current flow in ct secondaryw
How to calculate no of EARTH PIT? Describe the formula as per IS standard?
what is the prosses for getting of 33kv licence (i have completed my engineering degree & working in 33kv substation for contract basis )????
how to find impedance , mutual indatnce in transmission lines
what is the mechanism of operation of brushless dc motor why is it more wexpensive then ordinary permanent magnet motors