Answer / ssnslm

Frequency changer can step up or step down the frequency.
power converter(cycloconverter) converts (step-up or step-
down) the input supply frequency to the desired frequency
with or without voltage control. Cycloconverters are used
to power the high frequency induction furnaces in steel
industry

opkinson's test

0 Answers   Bhel,

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Transformer/insulating oil tester(BDV tester)

1 Answers  

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why in an industry; machine having rated 200 h.p stopped after power factor is maintained above 0.97 lag by control panel in view-of energy saving

0 Answers   HCL,

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what is difference between megger & Contact resistance meter & its Application?

2 Answers  

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Dear All, I am new in construction company , my boss ask a question at time of interview , If we have 60MW generation and Single Power Transformer step-up we have. if CMR 50/60MVA , ONAN, ONAF respectively , is it sufficient or not ? for that much power to transfer,

0 Answers  

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difference between brush less & brush excitation in a generator?

1 Answers  

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What happens if the Capacitive Voltage Transformer Primary neutral is not earthed. There is a CVT between Transformer and source, and the CVT neutral of the transformer is not earthed, does it effect the transformer while charging or does it effect the transformer charging process.

1 Answers  

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WHAT IS THE MEANING OG (li = 7 In)

0 Answers  

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armature winding of dc machine produce alternating emf then it convert in to dc by using commutator.But only we consider armature resistance why don't we consider inductive reactane effect?

0 Answers   APTransco,

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what kind of technical test that i need to learn because i have an interview tomorrow.. please someone help me..

0 Answers   Sony,

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In legging current reactive power is arise but in leading current which power will be arise ? and in this case, is active power more than rated ?

3 Answers  

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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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