Electromagnetic Fields BTEE-403 4th Sem B.Tech PTU April 2019 Question Paper
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Download Previous Year PTU University Question Paper of Electromagnetic Fields 4th Sem B.Tech PTU April 2019 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 April 2019 Question Paper SECTION-A
Q1. Write Briefly
a) Define current density at a given point.
b) Write the expression for energy stored in magnetic field.
c) Define Electric Dipole.
d) State the condition for the vector F to be solenoidal.
e) Write down the magnetic boundary conditions.
f) What is Lorentz force?
g) Mention the properties of uniform plane wave.
h) What is the effect of permittivity on the force between two charges?
i) State Maxwell’s third equation.
j) State Gauss law for magnetic field
SECTION-B
Q2. Attempt any five questions. 5×6=30
2. Derive the expression for force on a moving charge in a magnetic field.
3. Derive Poisson’s equation.
4. Explain the importance of cylindrical and spherical coordinate systems with suitable example for study of electromagnetics.
5. What is meant by skin depth of conductor? How it is related to attenuation constant? How does it depend upon conductivity and frequency?
6. A 300Hz uniform plane wave propagates through fresh water for which s = 0, mr = l, er = 7.8. Calculate : a) Attenuation constant. b) The phase constant.
SECTION-C
Q3. Attempt any three questions. 3×10=30
7. Using Maxwell equations, derive the Poynting’s theorem.
8. a) Derive the equation of continuity for time varying fields.
b) State and explain the electrostatic boundary conditions existing at the boundary between two dielectrics.
9. Write short notes on the following :
a) Uniqueness Theorem
b) Reflection by perfect insulator at oblique incidence.
Current density at a given point.
Expression for energy stored in magnetic field.
Electric Dipole.
Condition for the vector F to be solenoidal.
magnetic boundary conditions.
Lorentz force
Properties of uniform plane wave.
Effect of permittivity on the force between two charges
Maxwell’s third equation.
Gauss law for magnetic field
Electrical Engg.Materials EE-208 4th Sem April 2019 B.Tech EE Paper
Expression for force on a moving charge in a magnetic field.
Poisson’s equation.
Importance of cylindrical and spherical coordinate systems with suitable example for study of electromagnetics.
Skin depth of conductor.how it depend upon conductivity and frequency?
300Hz uniform plane wave propagates through fresh water for which s = 0, mr = l, er = 7.Calculate : a) Attenuation constant. b) The phase constant.
Electromagnetic Fields 4th Sem B.Tech PTU April 2019 Question Paper
Maxwell equations,Derive the Poynting’s theorem.
Equation of continuity for time varying fields.
Explain the electrostatic boundary conditions existing at the boundary between two dielectrics.
Short notes on the following :
a) Uniqueness Theorem
b) Reflection by perfect insulator at oblique incidence.
Electromagnetic Fields 4th Sem B.Tech PTU April 2019 Question Paper
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