Answer / k.prakashchandra

When the ups voltage = battery voltage,Number of batteries
required = desired back up hours x load /V x AH of each battery

what is impedence (Z) of transformer, what indicate in transformer , which perameter indicate in transformer

5 Answers   CTS, Suzlon,

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static chagre

0 Answers  

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what is the relation between frequency and inductive reactance in a d.c supply?

2 Answers   L&T,

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Hi, I'm running plastic reprocessing company where all motors are running only in delta. Due to that when I use start my 30 hp motor my transformer gets fuse. Where it happens two times a day. I gt a suggestion from a person about Automatic Power Factor Controller APFC. Is it useful for my problem??? Or is der any other way for solving this problem?? Upgrading the transformer is difficult. Pls give Me ur suggestion. Waiting for ur reply.

2 Answers   Shree Lingaa Polymer,

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how to do 'pole drop test' on AC generator?

1 Answers  

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ii) A shunt motor supplied at 230V, runs at 900 rpm when the current is 30A. The resistance of the armature is 0.4 ohms. Calculate the resistance required in series with the armature to reduce the speed to 600 rpm, assuming that the armature current is then 20A. [12]

0 Answers  

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why the energy meter disc rotates anticlockwise while reading

1 Answers   KSEB,

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the parts of transformers ?

1 Answers   Bhel, Facility management,

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what a function diesel generetaor turbo charger & turbo charger is more heated explain reason ?

0 Answers  

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how to reduce earth resistance in sandy soil.

1 Answers  

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When motor stater and roter air gap do big then what will moter.

3 Answers   Intas,

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How can we calculate the efficiency of a Running (On-Load) Motor ? What parameters are required and what is the method ?

0 Answers  

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