1, The radar in which both transnieston and reception is done using che same antenna are called: A) Monostatic radar B) Bistatic radar C) Quasi-monostatic D) Quasi-bistatic

Q1) Very low signal strength in antenna. * Antenna patterns O Major lobes O Minor lobes O Null

Q1. Choose the correct answer to the following questions: A-Which of the following type of antenna has a directivity of 0 dB? a) Horn antenna b) General antenna c) Patch antenna d) Isotropic antenna B-Amongst which of the following shows the relation between half power beam width and the directivity of an antenna? a) A larger HPBW equates to more directivity HPBW equates to less directivity A smaller HPBW equates to more directivity d) None of the above c) A smaller C-The region of 0.25 m from D=1.5m antenna at 300 MHz is. a) Far field b) near field c) Fresnel field d) none D- Which of the following lobes of an antenna radiation pattern is contained the most power? a Major lobe b) Minor lobe c) Side lobe d) Back lobe E- Suppose we have a copper conductor with a frequency of 60 Hz. We need to find the skin depth of the electromagnetic wave in this conductor. Conductivity of copper (a): 5.8 x 107 S/m. the skin depth is a) 9.5 mm b) 20 mm c) 10 cm d) none

Multiple Choice Questions (MCQ): (15 M 1. For a horn antenna, in which flaring is done only in one direction is a) Conical antenna b) Sectoral antenna c) Pyramidal horn antenna d) Exponential horn antenna 2. Wave unaffected by night or day is a) Ground wave b) Skywave c) Space wave d) Tropospheric wave 3. When a wave is incident normally then the acceptable highest frequency at which signal can be returned is the a) critical frequency b) LUF c) optimum frequency d) dominating frequency 4. High frequency range is from? a. 0.3 to 3 MHz b. 3 to 30 MHz c. 30 to 300 MHz d. 3to 30 MHz 5. The actual permittivity of a medium whose relative permittivity is 5. a) 4.43*10-¹1F/m b) 4.43*10-¹2F/m c) 4.43*10¹¹F/m d) 4.43* 10¹2F/m