what is the difference between upper impedance and lower impedance distance relay?

3 Answers   Havells, Power Grid,

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How is the percentage impedence of a transformer fixed at design stage???

0 Answers  

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WHAT IS THE FULL FORM OF CABLE TYPE-AYWY,AYWAY,YWY ?

6 Answers   Polycab, VIR, XLPE,

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A 11KV, 1200 A breaker combination fixed in a cubicle for HT motor.Is normally for 11 KV motor fuse is using? if Yes, What range fuse is required?

0 Answers  

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what use marshalling kishock in power transformer?

2 Answers  

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how does we calculate the capacity of battery

1 Answers   MTS,

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how does this job compare with others you have aplied for?

0 Answers  

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low frequency protection why recomend?

0 Answers  

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We use ungrounded DC system (220V/110V) for control and protection system in substations etc. Suppose we have long 2 core DC cables running from our DCDB in control room to the load (length of around 2 to 3 km). Do we need to protect these long DC cables from earth leakages or not? If yes how?

5 Answers   Siemens,

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Why do we give DC excitation to AC Synchronous motor??

9 Answers   Lance, MBM, Polycab,

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Lux meter is the measuring device to measure the lux level of lighting fixture. in industrial sector two types of lighting fixture is being used as street lighting purpose 1. HPSV (Sodium) and 2. HPMV (Mercury). HPMV having white light which is an combination of red, blue and yellow colour, while HPSV haivng Yellow lighting. in HPSV red & blue colour will be absent. during measurement of the lux level of HPSV and HPMV fixture. 1. Lux meter can measure the actual lux level of both fixture? 2. or it will show false reading for HPSV fixture light as it has only yellow light present. please give me answer

1 Answers  

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Write down the design procedure of commutaj.

0 Answers  

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