Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / 7anoter4
Vector is a physical notion which means
a quantity that are fully described by both a magnitude and
a direction. Speed, force, electric field intensity,
magnetic field intensity, current density and other are
vector defined by a magnitude and a direction.
With a field of quantities define as vectors you may use
function like gradient, curl and divergence and product as
vectorial or scalar.
Scalar it is a quantity defined complete by the magnitude
as current intensity, magnetic flux ,electrical potential
and other.
In electrical calculation- in alternative current system-
it is employed a quantity defined as phasor or phasor-
vector formed of two parts: one real and one imaginary
quantity.
For instance, the real part of a current could be I*cos(fi)
where fi it is the angle between supplied voltage
[considered as fi=0] and I it is the measured current
[intensity].An imaginary part is annexed in order to
complete the image I*sin(fi).
Then we have three possibilities: only real part-
considering fi=0, only imaginary part considering fi=90
degree or a complex number I*cos(fi)+I*sin(fi)*i i=sqrt(-
1) an imaginary unit.
So, the ac current[intensity] is not a vector and not a
scalar but could be a complex number or a real quantity-
depends on how you'll take the "fi".
| Is This Answer Correct ? | 0 Yes | 2 No |
Post New Answer View All Answers
what is the safety points of vaccum circuit breaker.
When MICC cables used ?
why we use circuit breakers for switching instead of normal switching device?
how we explain parallel paths armature winding?
Can we test the alignment of End shield and stator of turbogenerator without rotor insertion? Also how to fix maintain the alignment at site installation?
In diesel generator how AVR get voltage to excitation. And basic diagram DG EXCITATION CIRCUIT.
what is the differebt between ac and dc fuse?
What is the method of estamating of cable, CB,MCB ?
How to calculate the copper in HT motors if KW, RPM & Voltage is given
is there any lightning by passer is arranged in ship like buildings?
5- What is the task (function) of the excitation and isolation transformers in power plant? 6- What is the task (function) of LCI (A), LCI (B) and LCI (COS) in power plant? : LCI (A) and LCI(B) are load commutating inverter for generator turbine starting. , LCI (COS) is load commutating inverter change over switch
State and define ohm’s law?
Explain about p.t?
what is your majour contributions in your present job
The sodium vapor lamp is not glows when it is connected a distance of 5 meters above from gearbox, why ?
