Answer / bhatt

In PVC conduit, one can run single phase, two phase and
three phase but two phases is not allowed in metalic
conduits as two phases can not cancel out magnetic field
and metalic conduit can induce voltage which can lead to
fatal accident.

Answer / answer

If you run the wires of two different phases, under short
circuit or fault in one of the phases can affect the another
one.

Answer / g. das

For safety during maintenance and protect short ckt from 440v

Answer / guest

i have no ans

Answer / anil

kindly re-chk the question.

Answer / binod bhanj

please clear the question

Answer / eswar

because of internal problems

Answer / k.prakashchandra

Because we have only single and three phase circuits or
systems and not two phase.

what is entropy?

3 Answers   NTPC,

I want definition for ABT Meter (Availability Based tariff) ?

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What is the purpose of a process loop? What is the controllers responsibily?

1 Answers  

I just purchased a 4 position cam switch to be used to operate a 3-speed blower motor. The motor is a 10 amp motor and has 3 wires that are used to control speed. The cam switch was rated at 660V 20 amps but when I received it, I noticed that it has AC-15 operational current rating (Ie) of 4/5 amps. If I am reading the label correctly. the 4/5 amps is related to 440v/220V (Ue). Other ratings are AC-3: 5.5A, AC2: 7.5A and AC-4: 1.5A. My questions are 1) Is it safe to use this switch with the motor I have 2) what is the difference between the 20 amp Ith ratting and the Ie operational ratings?

0 Answers  

Why transformer neutral is earthed

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How to design inductive load for 3 phase 440v and maximum 5 amps for star or delta? Can we use a 15kW, 1450rpm motor for 15kW, 960rpm apllication?If yes.how......n.if thesame motor used what`s it`s sideeefect.

0 Answers  

what does vector group Dyn11 tell us? also tell me how will u differentiate between phase lead and phase lag thru this vector group

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Can anyone tell me some hints about what type of questions are asked by the interviewer by an Electronics engineer when company is installing an IPP and wants a team of engineers?

0 Answers  

Can anybody please refer the best and simple book for about Protection relays and in detail of all its protection ?

0 Answers  

what are the methods of speed control of dc motor???

4 Answers  

why we use to transmit the power in three phases intead of single phase ?

5 Answers  

what is the formula to find out how many amps generater takes running on full load.

4 Answers