KERALA UNIVERSITY Class 7 microwave and radar engineering Question Paper 2013

Practice authentic previous year questions for better exam preparation.

Sample Questions

(a) Explain the working of
(v) The do beam current density. (vi) The instantaneous beam current density. OR
(a) (i) Drive the S-matrix for directional coupler. (ii) Explain about hybrid circuit. State its applications. ( $\mathbf{2} \times \mathbf{5}=\mathbf{1 0}$ marks)
(b) A helix travelling wave tube operates at 40 Hz under a beam voltage 19 kV and beam current 500 mA . If the helix impedance is $25 \Omega$ and the interaction length is 20 cm , find the output power gain in dB . OR 2
(a) Explain the construction and working of cylindrical magnetron.