EC > GATE 2017 SET-1 > Transmission Lines
The voltage of an electromagnetic wave propagating in a coaxial cable with uniform characteristic impedance is V(l)=e-γl+jωt Volts, where l is the distance along the length of the cable in metres, γ=(0.1+j40)m-1 is the complex propagation constant, and ω=2π×109rad/s is the angular frequency. The absolute value of the attenuation in the cable in dB/metre is
Correct : 0.8686
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