Curioustab

Home » Electronics and Communication Engineering » Electromagnetic Field Theory

For F1 layer the maximum ionic density is 2.3 x 104 electrons per cc. The critical frequency for this layer will be

1.36 MHz
13.6 MHz
136 MHz
1360 MHz

Correct Answer: 13.6 MHz

Explanation:

f_c = 9N_max .

← Previous Question Next Question→

More Questions from Electromagnetic Field Theory

A wave is propagated in a waveguide at frequency of 9 GHz and separation is 2 cm between walls calculate the phase velocity for dominant mode.
A plane wave is characterized by the wave is
Consider a 300 Ω, quarter wave long at 1 GHz transmission line as shown in figure. It is connected to a 10 V, 50 Ω source at one end is left open circuited at the other end. The magnitude of the voltage at the open circuit end of the line is
What is the characteristic impedance at 10 MHz?
The displacement flux density at a point on the surface of a perfect conductor is = 2(ax - 3 az)c/m2 pointing away from the surface. The charge density at that point c/m2 will be
The velocity of electromagnetic wave in a good conductor is
Which one of the following does represents the electric field lines for the TE02 mode in the cross section of a hollow rectangular metallic waveguide?
A parallel polarized wave is incident from air into paraffin having relative permittivity 3, the value of its Brewster angle is
For a 400 kHz transmission line having L = 0.5 mH/km, C = 0.08 mF and negligible R and G, the value of propagation constant P will be
The Depth of penetration of EM wave in medium having conductivity σ at a frequency of 1 MHz is 25 cm. The depth of penetration at a frequency of 4 MHz will be

Discussion & Comments

No comments yet. Be the first to comment!

Join Discussion