ThreePhase Rectifiers Questions and Answers
Power Electronics Objective Questions & Answers
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A 3phase bridge rectifier charges a 240 V battery. The rectifier is given a 3phase, 230 V supply. The current limiting resistance in series with the battery is of 8 Ω. Find the average value of battery charging current.
Correct!
Wrong!

A stepdown deltastar transformer, with perphase turns ratio of 5 is fed from a 3phase 1100 V, 50 Hz source. The secondary of this transformer is connected through a 3pulse type rectifier, which is feeding feeding an R load. Find the average value of output voltage.
Correct!
Wrong!

A 3phase bridge rectifier, has the average output voltage as 286.48 V. Find the maximum value of line voltage
Correct!
Wrong!

A stepdown deltastar transformer, with perphase turns ratio of 5 is fed from a 3phase 1100 V source. The secondary of this transformer is connected through a 3pulse type rectifier, which is feeding an R load.
The power delivered to the load is 6839.3 Watts.
The maximum value of the load current is √2 x 22 A.
Fin, the rms value of output voltage Vo (rms)
The power delivered to the load is 6839.3 Watts.
The maximum value of the load current is √2 x 22 A.
Fin, the rms value of output voltage Vo (rms)
Correct!
Wrong!

A 3phase 6pulse diode rectifier is shown below with phase sequence RYB. The negative group of diodes (D4, D5, D6) conduct in sequence (from ωt = 0°)
Correct!
Wrong!

From the diode rectifier circuit shown below, with phase sequence RYB, from ωt = 150° to 270°
Correct!
Wrong!

For a 3phase 6pulse diode rectifier, has Vml as the maximum line voltage value on R load. The peak current through each diode is
Correct!
Wrong!

The circuit shown below is that of a
Correct!
Wrong!

From the diode rectifier circuit shown below, with phase sequence RYB, diodes D3 & D5 conduct when
Correct!
Wrong!

A 3phase bridge rectifier charges a 240V battery. The rectifier is given a 3phase 230 V supply. The current limiting resistance in series with the battery is 8 Ω.
Find the power delivered to the battery (Pdc).
Find the power delivered to the battery (Pdc).
Correct!
Wrong!
