What is Rough Balance Busbar Protection1 3188
When both contractor star & delta is hold in star delta motor ?? So what happen in this case ??1 1049
How do we calculate transformer oil in liter from the rating of the transformer.
if flux and load static in dc motor and supply voltage increases 20% then what happened in speed979
How to calculate loses in transformer of 160 KVA ?
Shall we use Dyn1 transformer in place of Dyn11 for motor application as a distribution transformer1 1527
From reading, Under voltage relay used also as phase sequence relay now, Why I use under voltage and phase sequence relay in the same circuit (ATS)?924
What is the permissible limit of shaft voltage for 6.6 KV motors ? Why? Is there any standard is available?1472
In what situations relays are used in Circuit breaker? In Above what rating of Circuit breaker the relays are used? Why relays are not used for CB like MCB?799
How relay coordination has to be done? what are the inputs are required for this? Please explain this with calculation method?886
Now I inject 1kv DC supply r&y=??? R&Y=?? Y&B=?? B&R=???? RYB&N=??? RYBN&E=????? Minimum value====???????1 1365
What will happen if the rotor circuit of a slipring I.M. is kept open & electric supply is given to its stator winding.2 4104
Starting current of a 10 HP induction Motor is ______ time’s full load current.
What is formula calculation size cable wire ?
single phase power supply give to separate one steel coup with water, what reaction create
What is star-delta transformer?
The gauge indicates the number of amps, but what about voltage? How voltage rating (for wire or fuse) determined?
3phase cable calculation formula by motor load
In EDO ACBs what is a purpose of closing coil and motor, what is the operation of these devices are they inetconnected. means if we give supply to motor and by BCS we charge Closing coil,what exact is operation is and how it charge a spring of ACB. Sir if anybody has an wiring diagram please send me the link to operate and EDO breaker.
What is the rating factor for copper cable ( Specific value according to the type of laying ) & the voltage drop?
When are the directional relays used?
if the motor rated speed is 950rpm. how to change the above rated speed? is it possible?
What the main causes of transient interruptions on Over-Head Distribution Lines?
how to remover corona effect and hysteresis losses from contactor
what is meant by poly phase induction motor ? how its operating by single phase or three phase?
IF HT CAPACITOR IN ON POSITION IS THERE ANY LOSSES I.S I SQURE OCCURS IN THE SYSTEM
DEAR SIR,I GOT THE CALL LETTER FROM RRB, SECUNDERABD AS A JE-II SO PLEASE PROVIDE ME SOME MODEL QUESTION AND ANSWER PAPERS AND LAST YEAR QUESTION PAPERS