Answer / cruz

frequency is nothing but time period in inverse(eg for 50hz
time period is 1/50=20ms hence as frequency decreases the
time period increases resulting in larger current flow thus
increasing the dissipation)

If Polarization index of motor 8.75 at 500volts of medium voltage 4.16 KV motor what this mean winding good or bad pl answer if any reffrence book give me the link

0 Answers   Marafiq,

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Why don't connect earth wire to elcb?if earth fault occur,how will detect it

1 Answers   TATA, Tata Communications, Telecommunications,

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what is deferens between HT&LT DG

2 Answers  

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For a 6.6kV Motor it is recommended to do megger test with 500 V d.c and not more than 5kV d.c but the Hi voltage withstand test should be performed by 12kV AC. Why the dc voltage test should be limited but AC voltage withstand test could be with such a high voltage?

0 Answers   Hormozgan Steel,

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how do u gauge the size of the cable ?for eg. consider a 300 sqmm L.T Cable.How do u determine the size of the cable seeing it pratically?

0 Answers   Bhel, Jai Balaji, Rashmi Group,

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HI SIR, AM PREPARING FOR RRB FOR SECTION ENGINEER POST. PLZ SEND ME THE PREVIOUS QUESTION PAPERS AND HELP ME. I HAVE NO ENOUGH TIME MY EXAM DATE IS 22ND JUNE.... MY EMAIL ID IS nalla.amarnath@gmail.com

0 Answers  

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Why heat produce in AC machine higher than DC machine?

2 Answers  

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What are the necessary solutions needed to be carried out on a malfunctioned earthing mechanism of a VACUUM CIRCUIT BREAKER.(TAMCO)

0 Answers  

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how the voltage between all the three phase is zero can any body explain me

5 Answers  

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If the rank of a (5x6)matrix Q is 4, then which one of the following statements is correct ?

1 Answers   GATE,

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when we have to purchase the transformer by own i.e how much load will preferred HT connection?

0 Answers   Power Square,

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DIFFERENCE B/W NEUTRAL AND EARTH?

2 Answers   Genesis, IBC,

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