Power Electroni...

Consider a single phase fully controlled half wave rectifier supplying a resistive inductive load. If a free-wheeling diode (cathode of the diode shorted with the cathode of the thyristor) is connected across the load. Then, which of the following statements is true?

For a single-phase full bridge diode rectifier excited from a 230 V, 50 Hz source. With R = 10 Ω and the inductance (L) large enough to maintain continuous conduction, the average and rms values of diode currents will be

A single phase full converter is connected to RLE load. The source voltage is 230 V, 50 Hz. The average load current of 10 A is constant over the working range. For R = 0.4 Ω, L = 2 mH and E = 120 V the input power factor is ______

A single phase full converter is connected to RLE load. The source voltage is 230 V, 50 Hz. The average load current of 10 A is constant over the working range. For R = 0.4 Ω, L = 2 mH and E = 120 V, the firing angle delay is _____ (in rad)

A single-phase full converter is connected to ac supply of 330 sin 314 t and 50 Hz. It operates with a firing angle \(\alpha = \frac{\pi }{4}\) rad. The total load current is maintained constant at 5 A and the load voltage is 140 V. The overlap angle in degrees is _______

A single-phase half-controlled converter is used to supply the field winding of a separately excited dc machine. With the rated armature voltage, the motor operates at the rated no load speed for a firing angle α = 0°. The value of α which will increase the motor no load speed by 30% is _____ (in degrees). Neglect losses and saturation and the conduction is continuous.

A single phase fully controlled bridge converter operates in the continuous conduction mode from a 230 V, 50 Hz single phase supply with a firing angle α = 30°. The load resistance and inductances are 10 Ω and 50 mH respectively. The 3^rd harmonic load current as a percentage of average load current is _______