Description : A circularly polarised wave transmitted at the Brewster angle will be received as linearly polarised wave. State True/False a) True b) False
Last Answer : a) True
Description : When the polarisation of the receiving antenna is unknown, to ensure that it receives atleast half the power, the transmitted wave should be a) Linearly polarised b) Elliptically polarised c) Circularly polarised d) Normally polarised
Last Answer : c) Circularly polarised
Description : Identify the polarisation of the wave given, Ex = cos wt and Ey = sin wt. The phase difference is -90 0 . a) Left hand circularly polarised b) Right hand circularly polarised c) Left hand elliptically polarised d) Right hand elliptically polarised
Last Answer : b) Right hand circularly polarised
Description : Identify the polarisation of the wave given, Ex = 2 cos wt and Ey = 2 sin wt. The phase difference is +90 0 . a) Left hand circularly polarised b) Right hand circularly polarised c) Left hand elliptically polarised d) Right hand elliptically polarised
Last Answer : a) Left hand circularly polarised
Description : Identify the polarisation of the wave given, Ex = 2 cos wt and Ey = sin wt. The phase difference is -90 0 . a) Left hand circularly polarised b) Right hand circularly polarised c) Left hand elliptically polarised d) Right hand elliptically polarised
Last Answer : d) Right hand elliptically polarised
Description : Identify the polarisation of the wave given, Ex = Exo cos wt and Ey = Eyo sin wt. The phase difference is +90 0 . a) Left hand circularly polarised b) Right hand circularly polarised c) Left hand elliptically polarised d) Right hand elliptically polarised
Last Answer : c) Left hand elliptically polarised
Description : The Brewster angle is valid for which type of polarisation? a) S polarised b) P polarised c) Elliptical d) Linear
Last Answer : b) P polarised
Description : Brewster angle is valid for which type of polarisation? a) Perpendicular b) Parallel c) S polarised d) P polarised
Last Answer : b) Parallel
Description : Find the Brewster angle of a wave transmitted from a medium of permittivity 4 to a medium of permittivity 2. a) 35.26 b) 53.62 c) 26.35 d) 62.53
Last Answer : a) 35.26
Description : The reflection coefficient in the wave propagation when it is transmitted with the Brewster angle is a) 0 b) 1 c) -1 d) Infinity
Last Answer : a) 0
Description : The transmission coefficient of a wave propagating in the Brewster angle is a) 0 b) 1 c) -1 d) Infinity
Last Answer : b) 1
Description : The Snell law is applicable for perpendicular polarisation and the Brewster law is applicable for parallel polarisation. State True/False. a) True b) False
Description : The Brewster angle is the angle of a) Incidence b) Reflection c) Refraction d) Transmission
Last Answer : a) Incidence
Description : Find the ratio of refractive index of medium 2 to that of medium 1, when the Brewster angle is 60 degree. a) 0.707 b) 1.5 c) 0.866 d) 1.732
Last Answer : d) 1.732
Description : The Brewster angle is expressed as a) Tan -1 (n) b) Tan -1 (n1/n2) c) Tan -1 (n2/n1) d) Tan (n)
Last Answer : c) Tan -1 (n2/n1)
Description : The angle at which the wave must be transmitted in air media if the angle of reflection is 45 degree is a) 45 b) 30 c) 60 d) 90
Last Answer : a) 45
Description : The transmission coefficient of a wave with incident and transmitted electric field of 5 and 5 respectively is a) 0 b) 1 c) 10 d) 5
Description : The skin depth is calculated from the amplitude of the wave. State true/false a) True b) False
Description : The electric and magnetic field components in the electromagnetic wave propagation are in phase. State True/False. a) True b) False
Description : The angle of incidence is equal to the angle of reflection for perfect reflection. State True/False. a) True b) False
Description : The critical angle is defined as the angle of incidence at which the total internal reflection starts to occur. State True/False. a) True b) False
Description : The angle of incidence of a wave of a wave with angle of transmission 45 degree and the refractive indices of the two media given by 2 and 1.3 is a) 41.68 b) 61.86 c) 12.23 d) 27.89
Last Answer : a) 41.68
Description : The intrinsic angle of the wave with a loss angle of 60 is a) 120 b) 60 c) 90 d) 30
Last Answer : d) 30
Description : Find the permittivity of the surface when a wave incident at an angle 60 is reflected by the surface at 45 in air. a) 1.41 b) 3.5 c) 2.2 d) 1.73
Last Answer : d) 1.73
Description : A wave incident on a surface at an angle 60 degree is having field intensity of 6 units. The reflected wave is at an angle of 30 degree. Find the field intensity after reflection. a) 9.4 b) 8.4 c) 10.4 d) 7.4
Last Answer : c) 10.4
Description : An elliptically (arbitrarily polarized wave c an be broken up into a) Two circularly polarized components rotating in same direction b) Two circularly polarized components rotating in opposite directions c) Two stationary circularly polarized components d) None of these
Last Answer : An elliptically (arbitrarily polarized wave c an be broken up into Two circularly polarized components rotating in opposite directions
Description : Rectangular waveguides dominate the circular waveguides. Find the reason. a) Low cut-off frequency b) Easy to design c) More wave propagation d) The statement is false
Last Answer : b) Easy to design
Description : Pick up the correct statement from the following: (A) When the electric field oscillates in the direction of the electric vector, a plane polarised wave is formed (B) When the electric vector is ... right angles to the plane of incidence, horizontal polarization wave is formed (D) All of these
Last Answer : Answer: Option D
Description : Brewster Angle occurs for (A) Vertical polarization (B) Horizontal polarization (C) Circular polarization (D) None of the above
Last Answer : Brewster Angle occurs for Vertical polarization
Description : In P polarisation, the electric field lies in the same plane as the interface. State True/False. a) True b) False
Description : In S polarisation, the electric field lies in the plane perpendicular to that of the interface. State True/False a) True b) False
Description : The core refractive index should be lesser than the cladding refractive index for a coaxial cable. State True/False a) True b) False
Last Answer : b) False
Description : The refractive index of air is unity. State True/False. a) True b) False
Description : The attenuation in a good dielectric will be non- zero. State True/False. a) True b) False
Description : In free space, the ratio of frequency to the velocity of light gives the phase constant. State True/False. a) True b) False
Description : Harmonic electromagnetic fields refer to fields varying sinusoidally with respect to time. State True/False. a) True b) False
Description : The inductance is proportional to the ratio of flux to current. State True/False. a) True b) False
Description : In air, the tangential component of flux density is continuous at the boundary. State True/False. a) True b) False
Description : The tangential component of the magnetic field intensity is continuous at the boundary of separation of two media. State True/False. a) True b) False
Description : In ferromagnetic materials the susceptibility is infinity. State True/False a) True b) False
Description : The magnetic force impacts the energy of the field. State True/false. a) True b) False
Description : Electromagnetic waves are longitudinal in nature. State True/False. a) True b) False
Description : Inductance is present in semiconductor. State True/False. a) True b) False
Description : The permeability and permittivity of air or free space is unity. State true/false. a) True b) False
Description : The energy of a coil depends on the turns. State True/False. a) True b) False
Description : The magnetic flux density is directly proportional to the magnetic field intensity. State True/False. a) True b) False
Description : Electric field will be maximum outside the conductor and magnetic field will be maximum inside the conductor. State True/False. a) True b) False
Description : The time varying electric field E is conservative. State True/False. a) True b) False
Description : The induced voltage will oppose the flux producing it. State True/False. a) True b) False
Description : The magnetic field intensity will be zero inside a conductor. State true/false. a) True b) False