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Communication is a part of ________ skills.
A. soft
A. soft
See lessCommunication is a non-stop______________.
B. process
B. process
See lessWhich one of the following laws will not contribute to the Maxwell’s equations?
d Explanation: The Gauss law, Faraday law and the Ampere law are directly used to find the parameters E, H, D, B. Thus it contributes to the Maxwell equations. The Curie Weiss law pertains to the property of any magnetic material. Thus it is not related to the Maxwell equation.
d
See lessExplanation: The Gauss law, Faraday law and the Ampere law are directly used to find
the parameters E, H, D, B. Thus it contributes to the Maxwell equations. The Curie
Weiss law pertains to the property of any magnetic material. Thus it is not related to the Maxwell equation.
In lossy dielectric, the phase difference between the electric field E and the magnetic field H is
d Explanation: In a lossy dielectric, the E and H component will be in phase. This implies that the phase difference between E and H will be 0.
d
See lessExplanation: In a lossy dielectric, the E and H component will be in phase. This implies that the phase difference between E and H will be 0.
For dielectrics, which two components will be in phase?
d Explanation: In dielectrics, the electric and magnetic components E and H will be in phase with each other. This is due the variation in the permittivities and the permeabilities of the dielectric surfaces. The phase difference between E and H will be 0.
d
See lessExplanation: In dielectrics, the electric and magnetic components E and H will be in
phase with each other. This is due the variation in the permittivities and the
permeabilities of the dielectric surfaces. The phase difference between E and H will be
0.
The critical angle for two media with permittivities of 16 and 9 respectively is
a Explanation: The sine of the critical angle is the ratio of refractive index of medium 2 tothat in medium 1. Thus sin θc = n2/n1. Also n = √ε, thus sin θc = √ε2/√ε1. Put ε1 = 16 and ε2 = 9, we get θc = sin-1(3/4) = 48.59 degree.
a
See lessExplanation: The sine of the critical angle is the ratio of refractive index of medium 2 tothat in medium 1. Thus sin θc = n2/n1. Also n = √ε, thus sin θc = √ε2/√ε1. Put ε1 = 16 and ε2 = 9, we get θc = sin-1(3/4) = 48.59 degree.
The current reflection coefficient is given by -0.75. Find the voltage reflection coefficient.
d Explanation: The voltage reflection coefficient is the negative of the current reflection coefficient. For a current reflection coefficient of -0.75, the voltage reflection coefficient will be 0.75.
d
See lessExplanation: The voltage reflection coefficient is the negative of the current reflection
coefficient. For a current reflection coefficient of -0.75, the voltage reflection coefficient will be 0.75.
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 Explanation: The Snell law is given by N1 sin θi = N2 sin θt. To get θi, put N1 = 2, N2 =1.3, θt = 45 degree. Thus we get θi = sin-1(1.3 sin 45)/2 = 41.68 degree.
a
See lessExplanation: The Snell law is given by N1 sin θi = N2 sin θt. To get θi, put N1 = 2, N2 =1.3, θt = 45 degree. Thus we get θi = sin-1(1.3 sin 45)/2 = 41.68 degree.
The velocity and phase constant relation is given by
a Explanation: The velocity of a wave is the ratio of the frequency in radian/second to the phase constant. It is given by V = ω/β.
a
See lessExplanation: The velocity of a wave is the ratio of the frequency in radian/second to the phase constant. It is given by V = ω/β.
Find the load impedance in a quarter line transformer with characteristic impedance of 75 ohm and input impedance of 200 ohm.
a Explanation: For a quarter line wave, the characteristic impedance is the geometric mean of input and load impedances. Thus Zo2 = Zin ZL. On substituting for Zo = 75 and Zin = 200, we get ZL = Zo2 /Zin = 752 /200 = 28.125 ohm.
a
See lessExplanation: For a quarter line wave, the characteristic impedance is the geometric
mean of input and load impedances. Thus Zo2 = Zin ZL. On substituting for Zo = 75 and Zin = 200, we get ZL = Zo2 /Zin = 752 /200 = 28.125 ohm.