Answer / n panja

Reactive power is the part of total electric power supplied
by the sources (alternating) which travels in the circuit
back and forth without doing any useful work. This power can
not be extracted or converted into other form of energy.
That is why it is also called wattless power. The average
value of reactive power over a full cycle for a sinusoidal
source is zero. Unit of reactive power is VAr.

Answer / bheem rajashekar

defination w.r.t ps:-
It is the power needed by the transmission line to transfer
active power from one point to another point.This means
without reactive power,active power can"t be transferred.

Answer / pramila raj

The power value obtained by multiplying together the effective value of current in amperes, the effective value of voltage in volts, and the sine of the angular phase difference between current and voltage. Also known as wattless power.

If the Supply voltage is increased by n times, the cross section of conducter will [increase/decrease] by ________ times ?

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phase clearance between phase to phase and earth

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Pl. share your experience about industrial-electronics repair of machine tool.

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Give 3 phase transformer connections for 24 pulse rectifier using thyristors.

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what is the basic principle of operating of a television camera tube?

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1. which type of transformer connection is preferred in case of power supply transformers? (A) Star/Star (B) Delta/Delta (C) Star/Delta (D) Zig Zag/Star 2. In a power transformer usuall which winding is closer to the core? (A) Primary winding (B) Secondary winding (C) Low Voltage winding (D) High Voltage winding 3. The power factor of a purely inductive load is (A) Zero (B) Lagging (C) Leading (D) Unity.

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how to calculate the neautral earthing conductor size for a 500kva dg set.

2 Answers  

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