GATE Electrical Engineering (EE) 2017 Shift 2 Solved Paper

The figure below shows the circuit diagram of a controlled rectifier supplied from a 230 V, 50 Hz, 1-phase voltage source and a 10 : 1 ideal transformer. Assume that all devices are ideal. The firing angles of the thyristors T₁ and T₂ are 90° and 270° respectively.

The rms value of the current through diode D₃ in amperes is ________