Answer / pillay

You are right but the voltage to the LED is reduced by
connecting a resistor in series or a few LED are connected
in series so the voltage across each LED IS about the rated
voltage.

How to calcualte the total number of cells required for particular UPS of some X KVA with 3 and 5 hours back-up?

1 Answers   JLL,

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List out the types and name of the motor under their application?

0 Answers  

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what are thw types of turbines use in biogas plant?

0 Answers  

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In Transmission System if the potential difference at the two end of line are same then is the transmission of power will continue ? if yes then how.

1 Answers   IOCL,

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what will happens if one phase is missing for 33/11kv power transfomer and why?

0 Answers  

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please send me previose rrb junior engineer qustion papers

0 Answers   RRB,

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while calculating demand in my company the present load in kw is 212.... there 125kvar capacitor bank is installed by spliting as 50 in departments...the diasplay in panek biard shows 175kw... how could we know the amount of kvar used to compensate the kva

1 Answers  

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how to calculate the capacity of CT operated LT trivector meters on a particular distribution transformer.

1 Answers  

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The power consumption, in case of centrifugal loads (like pump, fan, blower etc.), proportional to ____.

2 Answers   BSNL, NTPC,

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what is the formula for building wiring to get the main breaker.

1 Answers  

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I want to ask that is there any relation between current denesity of copper and material purity. also is ther any standard which defines the standard current denesity of material.

0 Answers  

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how the speed of the gets motor regulated. does it draw the same current on the all speed level.

0 Answers   Danko,

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