what is the frequency standard with tolerance level for India?
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Why reactors use before incoming of ac vvfd drive?
What is the minimum underground tank size capacity considered for firefighting purpose?
Whether amorphous core transformer is available in India?.If available then up to what rating of voltage and KVA?.
i have gear oil pump with single phase motor.some time its motor starts running in reverse direction rather than forward direction...whats the reason behind this issue. 1- either capacitor is week? 2- or winding is week?
what are the advantage and dis-advantage of 3 phase 4 wire energy meter?
what is submersible pump?what is different between motor and sub motor?
What is the function of NGR for the parallel operation of alternator? whats happen when different rating of alternator are running with parallel?
Hi Suppose we have a wye/wye transformer which is grounded at both sides,in this situation, do we have ay ground transformer? in other words, ground transformer can do any thing more (while we have nuetral wire in both sides)? As the last question, what about 3rd harmonic? we have two choices: first using wye/delta transformer + ground transformer and second using wye/wye earthed connection.in the former choice, we dont have 3rd harmoonic at the secondary side but what about Yn/yn conection? do we suffer from 3rd harmonic in the Yn/yn connection?
What is cut-off rate?
which network topology offers the greatest level of tolerance?
What will happen if the armature resistance is in minimum position and the field resistance is in maximum position while starting the motor
What are the two basic types of transformers?
What are test signals and their significance?
pre arcing time of ehv breaker
Given a collection of points P in the plane, a 1-set is a point in P that can be separated from the rest by a line; i.e. the point lies on one side of the line while the others lie on the other side. The number of 1-sets of P is denoted by n1(P). The maximum value of n1(P) over all configurations P of 19 points in the plane is 18