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 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 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 : 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 : 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 : 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 : 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 : 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 : 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 : 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 : Calculate the skin depth of a conductor, having a conductivity of 200 units. The wave frequency is 10 GHz in air. a) 355.8 b) 3.558 c) 35.58 d) 0.3558
Last Answer : a) 355.8
Description : The total power of a wave with average power 15 units in a surface density of 0.5 units is a) 15 b) 30 c) 7.5 d) 0.75
Last Answer : c) 7.5
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 : 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 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 : In free space, the ratio of frequency to the velocity of light gives the phase constant. State True/False. a) True b) False
Last Answer : a) True
Last Answer : A sine wave has a frequency of 50 Hz. Its angular frequency is 100 n radian/second.
Description : Find the reflection coefficient of a wave with an incident electric field of 5 units and reflected electric field of 2 units. a) 2.5 b) 0.4 c) 0.8 d) 1.2
Last Answer : b) 0.4
Description : The power of a wave in a cylindrical waveguide of radius 2m with electric field 12 units is a) 2.39 b) 3.92 c) 9.23 d) 9.32
Last Answer : a) 2.39
Description : The power per unit velocity of a wave with electric field as 8 units and density 10 units is a) 40 b) 20 c) 80 d) 160
Last Answer : c) 80
Description : The power in a wave given that H component is 0.82 units in air. a) 126.74 b) 621.47 c) 216.47 d) 745.62
Last Answer : a) 126.74
Description : The power of a wave with electric field intensity of 3 units in air is a) 0.01 b) 0.03 c) 0.05 d) 0.07
Last Answer : a) 0.01
Description : The attenuation constant is 0.5 units. The skin depth will be a) 0.5 b) 0.25 c) 2 d) 4
Last Answer : c) 2
Description : Calculate the skin depth of a material with attenuation constant of 2 units. a) 2 b) 1 c) 0.5 d) 4
Last Answer : c) 0.5
Description : Calculate the dipole moment of a dipole with equal charges 2C and -2C separated by a distance of 2cm. a) 0.02 b) 0.04 c) 0.06 d) 0.08
Last Answer : b) 0.04
Description : Find the magnitude of the displacement current density in air at a frequency of 18GHz in frequency domain. Take electric field E as 4 units. a) 18 b) 72 c) 36 d) 4
Last Answer : d) 4
Description : Find the internal field when the applied field is 12 units, molecular field constant is 0.1 units and the magnetization is 74 units. a) 86 b) 62 c) 752 d) 19.4
Last Answer : d) 19.4
Description : Each flip-flop in a 4-bit ripple counter introduces a maximum delay of 40 n sec. The maximum clock frequency is (a) 2.65 MHz (b) 6.25 MHz (c) 5.26 MHz (d) 6.52 MHz
Last Answer : Each flip-flop in a 4-bit ripple counter introduces a maximum delay of 40 ns. The maximum clock frequency is 6.25MHz. nff * Tdelay = 4*40 =160ns so, max. frequency = 1/ (200*10-9 ) = 6.25MHz
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 : 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 electric and magnetic field components in the electromagnetic wave propagation are in phase. State True/False. a) True b) False
Description : For dielectrics, which two components will be in phase? a) E and wave direction b) H and wave direction c) Wave direction and E x H d) E and H
Last Answer : d) E and H
Description : The propagation constant of the wave in a conductor with air as medium is a) √(ωμσ) b) ωμσ c) √(ω/μσ) d) ω/μσ
Last Answer : a) √(ωμσ)
Description : Find the magnetic moment of a material with magnetization 5 units in a volume of 35 units. a) 7 b) 1/7 c) 15 d) 175
Last Answer : d) 175
Description : Find the torque of a loop with magnetic moment 12.5 and magnetic flux density 7.65 units is a) 95.625 b) 65.925 c) 56.525 d) 65.235
Last Answer : a) 95.625
Description : Find the Lorentz force of a charge 2.5C having an electric field of 5 units and magnetic field of 7.25 units with a velocity 1.5m/s. a) 39.68 b) 68.39 c) 86.93 d) 93.68
Last Answer : a) 39.68
Description : Find the total flux in a material of flux density 15 units in an area of 24 units. a) 3.6 b) 7.2 c) 9.6 d) 5.4
Last Answer : a) 3.6
Description : Find the maximum force of the conductor having length 60cm, current 2.75A and flux density of 9 units. a) 14.85 b) 18.54 c) 84.25 d) 7.256
Last Answer : a) 14.85
Description : Find the magnetic force when a charge 3.5C with flux density of 4 units is having a velocity of 2m/s. a) 14 b) 28 c) 7 d) 32
Last Answer : b) 28
Description : Find the total flux in a coil of magnetic flux density 12 units and area 7 units. a) 0.84 b) 0.96 c) 8.4 d) 9.6
Last Answer : a) 0.84
Description : Find the inductance of a material with 100 turns, area 12 units and current of 2A in air. a) 0.75mH b) 7.5mH c) 75mH d) 753mH
Last Answer : a) 0.75mH
Description : Find current density J when B = 50 x 10-6 units and area dS is 4 units. a) 9.94 b) 8.97 c) 7.92 d) 10.21
Last Answer : b) 8.97
Description : Find the flux contained by the material when the flux density is 11.7 Tesla and the area is 2 units. a) 23.4 b) 12.3 c) 32.4 d) 21.3
Last Answer : a) 23.4
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 : 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