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Why -E1 in $V1=I0*R1+I0*XL1-E1$?
posted in Practical TransformersHello, Please could you explain why there is a term -E1 on the L0 R0 branch of the practical transformer, but the term +E applies to the primary winding? Due to KVL, the voltage at the node where these three components meet should... -
Unable to solve for alpha, beta and gamma.
posted in Spheres : Part 2Hi, how to solve for alpha beta and gamma to find the point of intersection of the touching spheres- do you guys reply?... -
find the equation of the cone with vertex (5,4,3) and with 3x^2 + 2y^2=6 and y+z=0 as base
posted in Cones : Part 2find the equation of the cone with vertex (5,4,3) and with 3x^2 + 2y^2=6 and y+z=0 as base... -
Would you have examples on how to calculate cost of queries?
posted in Query Processing - Part 1HI I was wondering if you had example to illustrate how to calculate the cost of a complex query? Best Sahar... -
Problem in playing video
posted in Query Optimization - Part 1I have a problem while video playing. It got struck in the middle and could not reload.... -
in puls echo method
posted in Ultrasonics - Basic Conceptswhat happens if the ultrasonic wave passes through the back surface ?... -
how do we realize ex-or gate with minimum of 4 nand gate?
posted in Logic Gateshow do we realize ex-or gate with minimum of 4 nand gate?... -
what is the physical interpretation of " phasor addition of all the phase voltages at any instant in 3 phase symmetrical system is always ZERO"??
posted in 3 Phase Circuits - Basic ConceptsVa+Vb+Vc=0 means ?? does that mean there is no net voltage present?... -
Maxwell's equations
posted in Faraday`s LawI need more about Maxwell's equations and its application in homogeneous, isotropic, dielectric medium and also how to find Equations for EM waves from maxwell's equation... -
Didn't understood the condtions for transformation.
Is there any reason for the condition that the line voltage should be same for obtaining an equivalent source? And also didn't understood the condition for obtaining an equivalent load.... -
At time 35:10 when finding the expression for the power in phase 2, why does the teacher replace "wt" with "wt-180" and not replace the angle "phi" with "phi-180"? wplease clarify
posted in 3 Phase Star-Star SystemAt time 35:10 when finding the expression for the power in phase 2, why does the teacher replace "wt" with "wt-180"? I thought you would have to replace "phI" with "phi-120"! Please explain!... -
The expression for power
posted in 3 Phase Star-Star SystemIn this video, and before it, the teacher states power as: P=V*I For an AC circuit, it will then be: P=Vcos(wt)*Icos(wt-phi) Now from here the teacher does a simplification or changes it using a trig identities I believe, so... -
Transistor oscillator
posted in Bipolar Junction TransistorNothing is seen in the SZtudy yaar about the Transistor oscillator. Kindly give notes and video lecturing to me. Thanking you U K MOHANAN... -
I need explanation on the question below
posted in Crystal Structure - Basic ConceptsPlease i would like to know how to proof Bragg's law in two superimposed sets of X-ray diffraction data?... -
What do you mean by finding pattern?
posted in Data Warehousing And Mining - Part 1What do you mean by finding pattern?... -
in the video "Database- Conecepts, advantages, data models"- detailes about data models (hierarchical, network etc.) is not given. Kindly guide how to find out
posted in Database - Introduction - Part 3I need detailed explanation of various data models (hierarchical, network etc.).Kindly help Regards Swagata... -
To determine value of Choke and Capacitor
posted in FiltersHow to determine the value of capacitor and chokes for a Transformer Rectifier. The requirement is to limit the maximum AC ripple to less than 5%.... -
what is the ratio of the size of CUBE(F) to the size of F if fact table F has ten dimension attibutes each with ten different values
posted in Data Warehousing And Mining - Part 1it is question of nielit b level examination... -
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what is transformer?
Sir I do not understand the concept you have told in the video is that in a step up transformer if V2(secondary voltage) increases secondary current (I2) decreases as in OHM's law voltage is directly proportional to current...
