The document discusses vectors, phasors, and their application in electrical engineering. It defines a vector as a quantity having both magnitude and direction, often represented by an arrow. A phasor is defined as a line used to represent a complex electrical quantity as a vector. The document then discusses phasor diagrams for sinusoidal waveforms, phase differences, leading and lagging, vector addition, and the phasor diagram of a transformer on no load. On no load, a small current called the exciting current is drawn by the primary winding, which has both an in-phase, active component and a quadrature, reactive magnetizing component.

2. CONTENT
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1. WHATISVECTOR AND PHASOR
?
2. LE
ADING AND LAGGING
3. VECTOR ADDITION
4. TRANSFORMERON NO LOAD AND ITSPHASOR

3. What is a vector?
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Vector, in physics, a quantity that has both magnitude
and direction.It istypically representedbyan arrow
whose direction is the same as that of the quantity and
whose length is proportional to the quantity’s
magnitude.
What is a phasor?
A phasor is a line used to represent a complex electrical
quantity as a vector.

4. A rotating vector representing the
sinusoidal
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5. PHASOR DIAGRAM OF A
SINUSOIDAL WAVEFORM
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6. P
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7. PHASEDIFFERENCE OF A
SINUSOIDALWAVEFORM
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8. LEADING & LAGGING
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9. P
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10. VECTOR ADDITION
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Vector addition is the
operation of adding two
or more vectors together
into a vector sum.
For two vectors and ,
the vector sum is
obtained by placing them
head to tail and drawing
the vector from the free
tail to the free head.

11. TRANSFORMER ON NO LOAD
Transformer is said to be on no load when secondary winding is
open circuited and the secondary current I2 is zero. In this case,
neither the secondary winding has any effect on the magnetic flux
in the core nor it has any effect on the primary current.
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12. Therefore if transformer is on no load, a small current I0 (usually 2
to10% oftheratedvalue)calledexcitingcurrentisdrawn by the
primary.
The no-load current has two components :
One, Iw in phase with the applied voltage V1, called active or
working component. It supplies the iron losses and a small primary
copper losses.
Theother,Imagin quadraturewith theapplied voltage V1, called
reactive of magnetising component. It produces flux in the core and
does not consume any power.
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13. PHASOR DIAGRAM
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14. THANK YOU……..
Presented by :- GURKIRATSINGH
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DBY:-GURKIR
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