Q. Which TM mode in rectangular waveguide has lowest cutoff frequency?

View solution

Q. The velocity factor of a transmission line depends on

View solution

Q. A loss less line of characteristic impedance Z₀ is terminated in pure reactance of -jZ₀ value. VSWR is

View solution

Q. In a klystron amplifier the input cavity is called

View solution

Q. In a circular waveguide the dominant mode is

View solution

Q. The reflection coefficient on a line is 0.2 ∠45°. The SWR is

View solution

Q. For a 50 Ω resistor for 3 GHz application, the stray capacitance should be less than

View solution

Q. In a travelling wave tube distributed interaction between an electron beam and a travelling wave takes place

View solution

Q. The fabrication of microstrip line is done by

View solution

Q. The condition of minimum distortion in a transmission line is

View solution

Q. A resistive microwave load with ZL = 150 Ω is connected to 50 Ω coaxial line. SWR is

View solution

Q. Which of the following devices uses a slow wave structure?

View solution

Q. In a turnstile antenna two-half wave resonant wire radiators are placed at 90° to each other in the same plane and are excited

View solution

Q. A waveguide section in a microwave circuit acts as

View solution

Q. In a klystron amplifier dc electron velocity is v₀ and dc electron charge density is ρ₀ the dc beam current is

View solution

Q. Which of the following parameters is negligible in transmission lines?

View solution

Q. The width of a radio beam from a 1 m diameter parabolic antenna at 10 GHz is about

View solution

Q. The diagram to show distance time history of electrons in klystron amplifier is called

View solution

Q. Impedance level of Impatt diodes is generally lower than that of Gunn diodes

View solution

Q. A quarter wave line open circuited at far end behaves as

View solution