Answer / natha

You may draw vector diagram considering the resistance of line
is very small and capacitance and inductance large. In low
load currents the effect of inductive drop is almost nil where
as the capacitive MVAr generation is large. This is because,
the capacitance is in shunt of the line (parallel to line)
where as the inductance is in series with the line. As the
load increases, the VAr iconsumed in the inductive drop. ( I *
XL drop and var consumption is I^2*XL) whereas the the
capacitive effect is constant whether load or no load. Hence,
as the load increases, the inductive drop takes over and as a
result, there is no ferranti effect. (You can draw vector
diagram for low loads and hi loads)

The power dissipated by a resistor of 10ohm when a current of 2A passes through it is:(a) 0.4W(b) 20W(c) 40W(d) 200W

2 Answers  

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When measuring the Insulation resistance of a motor winding (winding to earth) using a megger meter, Applied voltage(1000V) was automatically reduced to 500V. and the measured insulation resistance values are also very low (in Kohm range) Can anyone give me a reason???

3 Answers  

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How does frequency affect KVA rating of a transformer? If a 500 kva, 400 v, 60 hz t/f is to be operated on 50 hz frequency then how will its KVA rating change? a-increase b-decrease c-remains same Also explain why do u think like that.

8 Answers  

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What is meant by derating factor?

0 Answers  

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why inverter rating is in KVA

3 Answers   Alstom, JSW,

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Sate maximum power transfer theorem?

0 Answers  

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why rating of motor in HP ?

2 Answers  

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what are the functions & ratings of panels mentioned below: 1. Main LT Panel(MLTP) 2. Motor Control Centre(MCC) 3.Feeder pillars 4.Busducts

1 Answers   Aurobindo,

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why dc series moter is not started at no load?

5 Answers   IOCL,

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why we cannot apply ohms law to transformer?

3 Answers  

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Which protection detects both AC and DC?

3 Answers   Megatron Solutions,

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During underground cabling in landscape area what did we cover the cable with to prevent the electric shock & protect the cable?

0 Answers  

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