Answer / akash

Power Relay is to control AC contactors with no-nc and Reverse Power Relay is used to trip the system when there is any wrong phase is coming. It is usually used in 3phase motors.

Answer / deepak.vin208

Power Relay will operate when the power is more than the set irrespective of the direction where as reverse power relay will operate when the power is transferring the opposite direction...

upto how much low RPM we will run the commercial motor which is run through VFD without any problem occurs in motor.Motor rating Duty is S1 & RPM is 1400.

0 Answers   ABC,

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what is V=4.44FBN, THIS 4.44 ONLY U GOT the voltage in term sof 11, 22 etc this 4.44 u will get from form factor which has a value of 1.11

1 Answers  

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Why celling fan rotates in anticlockwise direction and table fan in clockwise direction ? Give technical reason.

5 Answers  

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i have 400/230v transformer and didnt done the neutral eatrhing. i connected one lamp to one phase and neutral to the earth. but the lamp is not glowing. again i connected neutral to earth and repeated the same. then the lamp is glowing. in the first condition i tested with a line tester also, at that time the tesrer is glowing what is happening i dont know can any one help me?

1 Answers  

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What is the permissable nutral current of three phase system as per IS standards?

0 Answers  

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why power not passes in plastic and rubber material

0 Answers   GPG,

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if 12v battery get discharged for 2 months after if we put charge it will charge again?how much time it will take to charge?

0 Answers  

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a battery is having capacity 100AH and 25% charging .if a load taking 10A & connected 6 hour .what is the final condition of the battery.

0 Answers  

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1 hp single phase motor is more likely to get hot thsn inone hp 3 phase motor its true or false? If true why?

3 Answers   Focus, Focus Energy,

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The efficiency of a 100kva transformer is 0.98 at full load as well as half load , for this transformer what is the Copper loss at full load ?

0 Answers  

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what is the all safty name of diesel genrator?

2 Answers   Adani,

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Q) Write VBscript code along with QTPscript code in QTP tool for below scenario 1. Launch yahoo site(i know) 2. Do loogin(i know) 3.Click inbox link(i know) 4.Go to every page of mail box and count no.of read mails and no.of unread mails(i know) 5.Store page numbers, read mail count and unread mail count in a new excel file sheet 6.Create 10 types of graphs on that data 7.Do logout and close site(i know) 8.Save new excel files with graph

0 Answers  

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