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  • Electromagnetic Fields 4th Sem B.Tech PTU Nov 2018 Question Paper

Electromagnetic Fields 4th Sem B.Tech PTU Nov 2018 Question Paper

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  • Categories Blog, Electromagnetic Fields PTU Paper
  • Date October 20, 2015
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Download Previous Year PTU University Question  Paper of Electromagnetic Fields 4th Sem B.Tech PTU Nov 2018 Question Paper

B.Tech. (EE-2011 Batch)

Electromagnetic Fields

Subject Code : BTEE-403           Paper ID : [ A1206]

Time : 3 Hrs.                          Max. Marks : 60

INSTRUCTIONS TO CANDIDATES :
1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks each.
2. SECTION-B contains FIVE questions carrying FIVE marks each and students have to attempt any FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students have to attempt any TWO questions

Electromagnetic Fields 4th Sem B.Tech PTU Nov 2018 Question Paper SECTION-A

Q1. Write Briefly

   a) Find a vector normal to a plane consisting of points pl(0,l,0), p2(l,0,l) and p3(0,0,l).

   b) State Stokes theorem.

   c) State and explain the relationship between potential gradient and electric field.

   d) What are the sources of electric field and magnetic field?

   e) Explain a few applications of Gauss law in electrostatics.

   f) State and explain Biot -Savarts law.

   g) What is a dipole? Calculate the dipole moment of a dipole with charges 2C and -2C separated by a distance of 2cm.

   h) What is capacitance? Calculate the capacitance of a air filled capacitor having two parallel plates of area 2m2 separated by a distance of 0.2m.
    i) Calculate the emf of a material having a flux linkage of 2t2 at time t = 1 second.
   j) What is phase constant? Calculate the velocity of wave propagation in a conductor with frequency 5 × 108 rad/s and phase constant of 3 × 108 units.

                                      SECTION-B

Q2. Attempt any five questions.                                                                    5×6=30

      Q2. State and explain Ampere’s law and modified Ampere’s law. A solid cylindrical conductor of radius R has a uniform current density. Derive expression for H for both inside and outside of the conductor. Plot the approximate variation of H as a function of radial distance from the centre of wire.

     Q3.What do you understand by Gradient and Curl? Find the gradient of the function given by x2+y2+z2 at (1, 1, 1). Find the curl of the gradient vector as obtained for the above function.

     Q4. A uniform plane electromagnetic wave with field varying sinusoidally with time, in medium ‘A’ is incident normally on the surface of medium ‘B’ Derive the expression for the reflection and refraction coefficients.

     Q5. What is magnetic field intensity? The positive y axis (semi-infinite line w.r.t. the origin) carries a filamentary current of 2 A in the – direction. Assume it is a part of a large circuit. Find magnetic field intensity at (2, 3, 0).

     Q6. What is the significance of the Maxwell’s equations? State the Maxwell’s equations in integral form for static and time varying fields.

                                     SECTION-C

Q3. Attempt any three questions.                                                       3×10=30

    Q7. State and explain Ampere’s law and modified Ampere’s law. A solid cylindrical conductor of radius R has a uniform current density. Derive expression for H for both inside and outside of the conductor. Plot the approximate variation of H as a function of radial distance from the centre of wire.
   Q8. Explain Poynting Vector. A plane electromagnetic wave having a frequency of 10 MHz has an average Poynting vector of 1 W/m2. If the medium is lossless with relative permeability of 2 and relative permittivity of 3 Find :
     a) The velocity of propagation,
     b) The wavelength,
     c) The impedance of the medium,
     d) The rms value of the electric field E.

  Q9. Write a short note on the following :
    a) Green’s theorem
    b) Continuity equation
    c) Analogies between electric and magnetic fields
   d) Polarization

Electrical Engg.Materials EE-208 4th Sem nov 2018 B.Tech EE Paper

Get Started

Section a Electromagnetic Fields 4th Sem B.Tech PTU nov 2018 Paper              

Find a vector normal to a plane consisting of points pl(0,l,0), p2(l,0,l) and p3(0,0,l).

Find a vector normal to a plane consisting of points pl(0,l,0), p2(l,0,l) and p3(0,0,l).

 

State Stokes theorem.

 Stokes theorem.

 

State and explain the relationship between potential gradient and electric field.

Explain the relationship between potential gradient and electric field.

 

What are the sources of electric field and magnetic field?

Sources of electric field and magnetic field

 

Explain a few applications of Gauss law in electrostatics.

Applications of Gauss law in electrostatics.

 

State and explain Biot -Savarts law.

Explain Biot -Savarts law.

 

What is a dipole? Calculate the dipole moment of a dipole with charges 2C and -2C separated by a distance of 2cm.

Dipole

Calculate the dipole moment of a dipole with charges 2C and -2C separated by a distance of 2cm.

 

What is capacitance? Calculate the capacitance of a air filled capacitor having two parallel plates of area 2m2 separated by a distance of 0.2m.

Capacitance

Calculate the capacitance of a air filled capacitor having two parallel plates of area 2m2 separated by a distance of 0.2m.

Calculate the emf of a material having a flux linkage of 2t2 at time t = 1 second.

Find emf of a material having a flux linkage of 2t2 at time t = 1 second.

What is phase constant? Calculate the velocity of wave propagation in a conductor with frequency 5 × 108 rad/s and phase constant of 3 × 108 units.

Phase constant

Calculate the velocity of wave propagation in a conductor with frequency 5 × 108 rad/s and phase constant of 3 × 108 units.

Electrical Engg.Materials EE-208 4th Sem NOV 2018 B.Tech EE Paper 

Section B :Electromagnetic Fields 4th Sem B.Tech PTU NOV 2018 Paper              

State and explain Ampere’s law and modified Ampere’s law. A solid cylindrical conductor of radius R has a uniform current density. Derive expression for H for both inside and outside of the conductor. Plot the approximate variation of H as a function of radial distance from the centre of wire.

Explain Ampere’s law and modified Ampere’s law.

A solid cylindrical conductor of radius R has a uniform current density.

Derive expression for H for both inside and outside of the conductor. Plot the approximate variation of H as a function of radial distance from the centre of wire.

What do you understand by Gradient and Curl? Find the gradient of the function given by x2+y2+z2 at (1, 1, 1). Find the curl of the gradient vector as obtained for the above function.

Gradient and Curl? Find the gradient of the function given by x2+y2+z2 at (1, 1, 1).

Find the curl of the gradient vector as obtained for the above function.

 

A uniform plane electromagnetic wave with field varying sinusoidally with time, in medium ‘A’ is incident normally on the surface of medium ‘B’ Derive the expression for the reflection and refraction coefficients.

uniform plane electromagnetic wave with field varying sinusoidally with time, in medium ‘A’ is incident normally on the surface of medium ‘B’ Derive the expression for the reflection and refraction coefficients.

What is magnetic field intensity? The positive y axis (semi-infinite line w.r.t. the origin) carries a filamentary current of 2 A in the - direction. Assume it is a part of a large circuit. Find magnetic field intensity at (2, 3, 0).

Magnetic field intensity

The positive y axis (semi-infinite line w.r.t. the origin) carries a filamentary current of 2 A in the – direction. Assume it is a part of a large circuit. Find magnetic field intensity at (2, 3, 0).

What is the significance of the Maxwell’s equations? State the Maxwell’s equations in integral form for static and time varying fields.

Significance of the Maxwell’s equations

State the Maxwell’s equations in integral form for static and time varying fields.

Electromagnetic Fields 4th Sem B.Tech PTU Nov 2018 Question Paper 

Electro magnetic Fields 4th Sem B.Tech PTU nov 2018 Question Paper

Get Started

Section c :-Electromagnetic Fields 4th Sem B.Tech PTU nov 2018 Question Paper              

 State and explain Ampere’s law and modified Ampere’s law. A solid cylindrical conductor of radius R has a uniform current density. Derive expression for H for both inside and outside of the conductor. Plot the approximate variation of H as a function of radial distance from the centre of wire.

Explain Ampere’s law and modified Ampere’s law.

A solid cylindrical conductor of radius R has a uniform current density.

Derive expression for H for both inside and outside of the conductor. Plot the approximate variation of H as a function of radial distance from the centre of wire.

Explain Poynting Vector. A plane electromagnetic wave having a frequency of 10 MHz has an average Poynting vector of 1 W/m2. If the medium is lossless with relative permeability of 2 and relative permittivity of 3 Find : a) The velocity of propagation, b) The wavelength, c) The impedance of the medium, d) The rms value of the electric field E.

Poynting Vector.

A plane electromagnetic wave having a frequency of 10 MHz has an average Poynting vector of 1 W/m2. If the medium is lossless with relative permeability of 2 and relative permittivity of 3 Find :

a) The velocity of propagation,


b) The wavelength,


c) The impedance of the medium,


d) The rms value of the electric field E.

 

 Write a short note on the following : a) Green’s theorem

Short note on the following :
a) Green’s theorem

Write a Short Note on b) Continuity equation

Short Note on b) Continuity equation

Write a Short Note on c) Analogies between electric and magnetic fields

Short Note on c) Analogies between electric and magnetic fields

Write a Short Note on d) Polarization

A Short Note on d) Polarization

Electromagnetic Fields 4th Sem B.Tech PTU Nov 2018 Question Paper 
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