Description : The frequency in rad/sec of a wave with velocity of that of light and phase constant of 20 units is (in GHz) a) 6 b) 60 c) 600 d) 0.6
Last Answer : a) 6
Description : Calculate the velocity of wave propagation in a conductor with frequency 5 x 10 8 rad/s and phase constant of 3 x 10 8 units. a) 3/5 b) 15 c) 5/3 d) 8
Last Answer : c) 5/3
Description : Calculate the velocity of a wave with frequency 2 x10 9 rad/s and phase constant of 4 x 10 8 units. a) 0.5 b) 5 c) 0.2 d) 2
Last Answer : b) 5
Description : Calculate the phase constant of a wave with frequency 12 rad/s and velocity 3×10 8 m/s(in 10 -8 order) a) 0.5 b) 72 c) 4 d) 3
Last Answer : c) 4
Description : The permeability and permittivity of air or free space is unity. State true/false. a) True b) False
Last Answer : a) True
Description : The phase constant of a wave propagation with frequency of 35 radian/sec and time delay of 7.5 sec is a) 4.66 b) 262.5 c) 46.6 d) 26.25
Last Answer : b) 262.5
Description : The group delay of a wave with phase constant 2.5 units and frequency of 1.2 radian/sec is a) 3.7 b) 1.3 c) 3 d) 2.08
Last Answer : d) 2.08
Description : Calculate the phase constant of a dielectric with frequency 6 x 10 6 in air. a) 2 b) 0.2 c) 0.02 d) 0.002
Last Answer : c) 0.02
Description : Curl is defined as the angular velocity at every point of the vector field. State True/False. a) True b) False
Description : The intrinsic impedance is the ratio of square root of a) Permittivity to permeability b) Permeability to permittivity c) Phase constant to wavelength d) Wavelength to phase constant
Last Answer : b) Permeability to permittivity
Description : The electric and magnetic field components in the electromagnetic wave propagation are in phase. State True/False. a) True b) False
Description : Gradient of a function is a constant. State True/False. a) True b) False
Last Answer : b) False
Description : The inductance is proportional to the ratio of flux to current. State True/False. a) True b) False
Description : The skin depth of the wave having a frequency of 3MHz and a velocity of 12 m/s is a) 2 b) 3 c) 4 d) 6
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 : Calculate the attenuation constant of a conductor of conductivity 200 units, frequency 1M radian/s in air. a) 11.2 b) 1.12 c) 56.23 d) 5.62
Last Answer : a) 11.2
Description : The skin depth of a wave with phase constant of 12 units inside a conductor is a) 12 b) 1/12 c) 24 d) 1/24
Last Answer : b) 1/12
Description : The phase constant of a wave with wavelength 2 units is a) 6.28 b) 3.14 c) 0.5 d) 2
Last Answer : b) 3.14
Description : The phase shift in the electric and magnetic fields in an EM wave is given by which parameter? a) phase constant b) attenuation constant c) propagation constant d) intrinsic impedance
Last Answer : d) intrinsic impedance
Description : Calculate the phase constant of a conductor with attenuation constant given by 0.04 units. a) 0.02 b) 0.08 c) 0.0016 d) 0.04
Last Answer : d) 0.04
Description : The expression for phase constant is given by a) Phase constant β = ωμε b) Phase constant ω = με c) Phase constant β = ω√(με) d) Phase constant β = 1/ωμε
Last Answer : c) Phase constant β = ω√(με)
Description : Calculate the wavelength of the wave with phase constant of 3.14 units. a) 1 b) 2 c) 0.5 d) 4
Last Answer : b) 2
Description : In conductors, which two parameters are same? a) Wavelength and phase constant b) Phase and attenuation constant c) Attenuation constant and skin depth d) Skin depth and wavelength
Last Answer : b) Phase and attenuation constant
Description : Calculate the phase constant of a wave with skin depth of 2.5 units. a) 5/2 b) 5 c) 2 d) 2/5
Last Answer : d) 2/5
Description : At high frequencies, which parameter is significant? a) Conduction current b) Displacement current c) Attenuation constant d) Phase constant
Last Answer : b) Displacement current
Description : Polarizability is defined as the a) Product of dipole moment and electric field b) Ratio of dipole moment to electric field c) Ratio of electric field to dipole moment d) Product of dielectric constant and dipole moment
Last Answer : b) Ratio of dipole moment to electric field
Description : The ratio of conduction to displacement current density is referred to as a) Attenuation constant b) Propagation constant c) Loss tangent d) Dielectric constant
Last Answer : c) Loss tangent
Description : In free space, the Poisson equation becomes a) Maxwell equation b) Ampere equation c) Laplace equation d) Steady state equation
Last Answer : c) Laplace equation
Description : The skin depth is calculated from the amplitude of the wave. State true/false a) True b) False
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 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 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 : An elliptically polarised wave transmitted at the Brewster angle will be received as an elliptically polarised wave. State True/False a) True b) False
Description : A circularly polarised wave transmitted at the Brewster angle will be received as linearly polarised wave. 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
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 : Harmonic electromagnetic fields refer to fields varying sinusoidally with respect to time. 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 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