Monthly Archives: January 2012

Maxwell’s Equations and their derivations

Let us first discuss the Maxwell equations. In this, let us first derive and discuss Maxwell fourth equation: 1. Maxwell’s Fourth Equation or Modified Ampere’s Circuital Law Here the first question arises , why there was need to modify Ampere’s … Continue reading

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Why is a rainbow seen after a rain?

Q1:- Why is a rainbow seen after a rain? Ans:- Do you know what a prism does when white light passes through it? Yes it splits the white light into seven colors that is violet, indigo, blue, green, yellow, orange … Continue reading

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Why does a balloon filled with hydrogen rise in air?

Q1:- Why does a balloon filled with hydrogen rise in air? Ans:- As the weight of the balloon is less than the weight of air displaced by it therefore the balloon rises in air. In balloons hydrogen is normally filled … Continue reading

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CMC limited placement experience and interview questions

Hi guys We had pool campus drive of CMC limited in our campus CTIEMT Shahpur. It was the first campus in Punjab to visit for Batch 2012. Firstly we had pre-placement talk , who told us about their company , … Continue reading

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How does a laser work

One must have seen and if not seen then must have heard the term laser. But if you have seen the laser light emitting from a source, then there should be natural question how does a laser work? Therefore let … Continue reading

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Gurukul Vidyapeeth Institute of Engineering and Technology Rajpura Patiala

Gurukul Vidyapeeth Institute of Engineering and Technology is situated in the district Patiala (Punjab) of India. Affiliated with: Punjab Technical University (PTU), Kapurthala Approved by: All India Council for Technical Education (AICTE), New Delhi. Courses offered: B.Tech. Computer Science Engineering … Continue reading

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Maxwell third equation and its derivation

Statement.(a)  It states that,whenever magnetic flux linked with a circuit changes then induced electromotive force (emf) is set up in the circuit. This induced emf lasts so long as the change in magnetic flux continues. (b) The magnitude of induced … Continue reading

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Maxwells first and second equations and their derivation

Maxwell’s first equation or Gauss’s law in electrostatics Statement. It states that the total electric flux φE passing through a closed hypothetical surface is equal to 1/ε0 times the net charge enclosed by the surface: ΦE=∫E.dS=q/ε0 ∫D.dS=q where D=ε0E= Displacement … Continue reading

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DISTORTIONLESS LINE

Definition DISTORTIONLESS LINE A transmission line is said to be distortionless when attenuation constant ‘α’ is frequency independent and the phase shift constant ‘β’ is linearly dependent on the frequency. Condition for line to be distortionless

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LOSSLESS TRANSMISSION LINE AND ITS CONDITION

CHARACTERISTIC IMPEDANCE ,Z0 DEFINITION I:- Z0 is defined as the ratio of the square root of series impedance per unit length ,Z to the square root of shut admittance per unit length,Ỳ Z0=Z/Y =R+jωL/G+jωc

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