7000+ GATE ECE Question Bank Pdf - 1

Question: 1

For the microwave antenna,

(A) Shape only depends on the frequency range used

(B) Size only depends on the frequency range used

(C) Neither shape nor size depend on the frequency range used

(D) Both shape and size depend on the frequency range used

Question: 2

When a particular mode is excited in a waveguide there appears an extra electric component in the direction of propagation. The resulting mode is

(A) Transverse electric

(B) Transverse magnetic

(C) Transverse electromagnetic

(D) Longitudinal electric

Question: 3

For an antenna, radiation intensity is defined as

(A) The time averaged radiated power per unit area

(B) The peak radiated power per unit area

(C) The peak radiated power per unit solid angle

(D) The time averaged radiated power per unit solid angle

Question: 4

Polarization is a measure of

(A) Excess change density

(B) Product of charge and distance

(C) Voltage gradient to produce electric breakdown

(D) Dielectric constant per unit volume

Question: 5

For a dipole antenna

(A) The input impedance is independent of the location of the feed point

(B) The effective length equals its physical length

(C) The current distribution along its length is uniform irrespective of the length

(D) The radiation intensity is maximum along the normal to the dipole axis