QUESTION 6 The magnitude of a transfer function (gain) of a multistage amplif 10000 1+ (nft) ² |4| At the corner frequency, determine the gain value in decibels O 60 dB 57 dB 63 dB 40 dB 80 dB 77 dB

Derive the expression for Zin

4) A single-phase full-wave AC voltage controller consists of two SCRs connected in invers-parallel. The supply voltage is 220V at 50Hz. The controller is used to control heater element of 2500W in an electric oven. The trigger angle is 30o. i) Draw the circuit diagram ii) sketch compatible waveforms for the supply, load and SCR voltages. iii) calculate the rms value of the load voltage and current. iv) Determine the input power factor of the circuit. v) Calculate the average value of the SCR current.