Exercise: Electromagnetic Field Theory

Questions for: Electromagnetic Field Theory

Calculate the directivity of a given linear end fire, uniform array of 20 element, each separated by λ/3
A:
100
B:
10
C:
26.66
D:
30
Answer: C

.

📖
📝
💬
👁️
Calculate the critical frequency for the E layer if maximum ionic densities are 3 x 106
A:
15.58 x 106
B:
15.58 kHz
C:
1.58 x 103
D:
None of the above
Answer: B

fc = 9Nmax

15.58 x 103 Hz.

📖
📝
💬
👁️
Polarization of a wave is
A:
direction of electric field
B:
direction of magnetic field at some fixed point in space
C:
either (a) or (b)
D:
none of the above
Answer: A

Direction of electric field is to be taken as reference.

📖
📝
💬
👁️
Medium 1 has the electrical permittivity ε1 = 1.5 ε0 farad/m and occupies the region to the left of x = 0 plane. Medium 2 has the electrical permittivity ε2 = 2.5 ε0 farad/m and the occupies the region to the right of x = 0 plane. If E1 in medium 1 is volt/m, then E2 in medium 2 is
A:
B:
C:
D:
Answer: C

According to boundary condition

hence, Ez1 = Ez2

Ey2 = Ey1

Et1 = Et2

📖
📝
💬
👁️
If the electric field intensity is given by , the potential difference between x(2, 0, 0) and y(1, 2, 3) is
A:
+1 volt
B:
-1 volt
C:
+5 volt
D:
+6 volt
Answer: C

📖
📝
💬
👁️
Ad Slot (Above Pagination)
Quiz