Answer / ravi

It is nothing but a Dialer,

It is used in FAS,In the event of Alarm it will dail all
the pre programed numbers & send the the prerecorded voice
msg...

Answer / joy

a dialer in an FDAS will also automatically dial or call the
fire station number when fire alarm occurs or when the
building is on fire.

Why an ac systems are preferred over dc systems?

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what is x'mer ,isolation x'mer & yltra-isolation x'mer?????

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role of europe union in UK safety legistlation (electrical safety)

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What is purpose of APFC panel?

7 Answers   Techno Electric and Engineering,

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why batteries are rated in ampere hour

1 Answers  

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We have one Energy meter for Measuring the voltage,current,power,energy(KWH,KVARH,KVAH) & power factor.The problem is that the meter does not show whether the PF is lagging or leading.So i want to know that is there any way or calculation to find out that whether the PF sign (lagging or leading) depending upon the above mentioned parameters?

4 Answers  

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Why are calling lagging power factor is a inductive load?

2 Answers  

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For RCD (Residual current device) Icu is defined. How i can find Ics for them?

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hi plz send me reliance placement papers..i.e electrical technical papers that have been asked in reliance test.

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difference between semiconductor & conductor & insulator?

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i have 28/32 MVA power transformer with 11/6.6 KC voltage rating and 12%impedance.it have star connection at both side.but it have another thied winding tertiary winding.what is used of this winding. pl tell me

7 Answers  

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what is meant by form factor and hoe related with the HT transmission voltage

2 Answers  

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