Download PTU B.Tech 2020 March ECE 4th Sem EC 208 Electromagnetic Field Theory Question Paper

Download PTU (I.K. Gujral Punjab Technical University Jalandhar (IKGPTU) ) BE/BTech ECE (Electronics And Communications Engineering) 2020 March 4th Sem EC 208 Electromagnetic Field Theory Previous Question Paper

1 | M-57513 (S2)-2813
Roll No. Total No. of Pages : 02
Total No. of Questions : 09
B.Tech.(ECE) (Sem.?4)
ELECTROMAGNETIC FIELD THEORY
Subject Code : EC-208
M.Code : 57513
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.

SECTION-A
Q1. Answer briefly :
a) What are equipotential surfaces?
b) What is the significance of Stoke?s theorem?
c) Define polarization.
d) Define the terms dielectric constant and refractive index.
e) State Coulomb?s law of force between any two point charges.
f) What are uniform plane waves?
g) What are the characteristics of TE waves?
h) Explain Ampere?s law.
i) What is the attenuation factor of TE waveguide?
j) Show that UHF line acts as lossless line.

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1 | M-57513 (S2)-2813
Roll No. Total No. of Pages : 02
Total No. of Questions : 09
B.Tech.(ECE) (Sem.?4)
ELECTROMAGNETIC FIELD THEORY
Subject Code : EC-208
M.Code : 57513
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.

SECTION-A
Q1. Answer briefly :
a) What are equipotential surfaces?
b) What is the significance of Stoke?s theorem?
c) Define polarization.
d) Define the terms dielectric constant and refractive index.
e) State Coulomb?s law of force between any two point charges.
f) What are uniform plane waves?
g) What are the characteristics of TE waves?
h) Explain Ampere?s law.
i) What is the attenuation factor of TE waveguide?
j) Show that UHF line acts as lossless line.

2 | M-57513 (S2)-2813
SECTION-B
Q2. Derive the continuity equation and displacement current equation.
Q3. State Poynting Theorem. Give an expression for Poynting Theorem.
Q4. Write Maxwell?s equations in free space for time varying fields both in differential &
integral form.
Q5. State and prove Gauss?s Divergence theorem.
Q6. Define wave impedance. Derive the expression of wave impedance for TM waves that
propagate in rectangular waveguide.

SECTION-C
Q7. Explain the wave between parallel planes. Derive the expression for the attenuation in
parallel plane guide.
Q8. Explain propagation characteristics of TE, TM and TEM waves in rectangular waveguide.
Q9. What do you mean by transmission line? Derive an expression for transmission line
equations.








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