GATE – Electronics and Communications Practices Mock Test 1

A material has conductivity of 10^-2 mho/m and a relative permittivity of 4. The frequency at which conduction current in the medium is equal to displacement current is

A transmission line is feeding 1 watt of power to a horn antenna having a gain of 10 dB. The antenna is matched to the transmission line. The total power radiated by the horn antenna into the free space is

Which of the following oscillators is suitable for frequencies in the range of mega hertz?

The core of a coil has a length of 10 cm. The self inductance is 8 mH. If the core length is doubled, all other quantities remaining the same, the self inductance will be

The minority carrier life time and diffusion constant in a semiconducting material are 100 μs and 100 cm^2/s respectively. The diffusion length of carriers is