what purpose of the percentage impendance in transformer3 3342
how to calculate the mf of kwh meter,if ct the ratio on meter is 100/5A2 42845
Generally in d.c. circuits the direction of current is from possitive to negative.In a.c.circuits what is the direction fo current flow4 3222
1. what type of winding of slip ring ac induction motor rotor and why. 2. how the heating element use in two phase (415 volt)and what rating of element, you prefered.1 3169
how the magnetic flux is said to be rotating & alternating?4 9880
Whether the vacuum contactor requires Short circuit protection?If No,why?775
Why Lightning arrester used? Can we use piece of iron as a core material of transformer, if No, why? In CRGOSS material what is meaning of cold rolled grain oriented? Why Impegrenation of Transformer is done? Properties of Insulator? what is phase angle? Testing of transformers (Routine & Monthly)?
can i have the methods of speed controls for 3 phase AC MOTORS.7 3875
what the purpose of protection signaling equipment in substation?2 5192
ho w to make Incident and accident reporting1 1387
what is the difference between gas group b and gas group c electrical equipment construction wise?
How much load can take a 16 mm aluminum cable 3 phase
hi frds, i m electrical engineer.can i get cdr for electrical engineer if u have then send me on my mail id its firstname.lastname@example.org help me frds
In an ACB shunt trip coil and undervoltage coil operated normally( breaker open and charged). But closing coil not operating untill manually discharge and recharging. Any help.
Explain Circuit Breaker Trip Characteristics in detail.
On a 6 KVA UPS we have to provide a DC MCB for Battery bank of 16 nos (12 V 42 AH). What Shall be the current rating of DC MCB ?
how to measure winding resistance of single phase motor?
What are the insulation standerds for eg H clase and how many insulation standerds are there and its standerds??????
What is shunt voltage and u v voltage witch one best
How many different speeds can be obtained in cascade control of two induction motors?
what is W.T?specify the acceptable range?
What is domestic transformer? Draw the connection of domestic transformer.
if the motor rated speed is 950rpm. how to change the above rated speed? is it possible?
The Howland current source produces a A Unidirectional floating load current B Bidirectional single-ended load current C Unidirectional single-ended load current D Bidirectional floating load current
I have a small system with two motors that are running on 380 vac, 60 hz. These motors are expensive and I usally get them from Brazil. I am adding another motor to the system, but I want to purchase a 480 vac, 60 hz motor to use. It will be on a VFD that is rated fro 380 thru 480. Is this posible and will I have to use a larger motor and derate it?