1
GATE EE 2005
+1
-0.3
A three - phase diode bridge rectifier is fed from a $$400$$ $$V$$ $$RMS$$. $$50$$ $$Hz$$, three $$-$$ phase $$AC$$ source. If the load is purely resistive, then peak instantaneous output voltage is equal to
A
$$400\,V$$
B
$$400\,\,\sqrt 2 V$$
C
$$400\,\,\sqrt {{2 \over 3}\,} \,V$$
D
$${{400} \over {\sqrt 3 \,V}}$$
2
GATE EE 2004
+1
-0.3
The circuit in figure shows a full-wave rectifier. The input voltage is $$230$$ $$V$$ $$(rms)$$ single-phase ac. The peak reverse voltage across the diodes $${D_1}$$ and $${D_2}$$ is
A
$$100\sqrt 2 \,V$$
B
$$100$$ $$V$$
C
$$50\sqrt 2 \,V$$
D
$$50$$ $$V$$
3
GATE EE 2004
+1
-0.3
The circuit in figure shows a $$3$$ $$-$$ phase half $$-$$ wave rectifier. The source is a symmetrical, $$3$$ $$-$$ phase four $$-$$ wire system. The line-to-line voltage of the source is $$100 V.$$ The supply frequency is $$400$$ $$Hz.$$ The ripple frequency at the output is
A
$$400$$ $$Hz$$
B
$$800$$ $$Hz$$
C
$$1200$$ $$Hz$$
D
$$2400$$ $$Hz$$
4
GATE EE 2003
+1
-0.3
A fully controlled natural commuted $$3$$-phase bridge rectifier is operating with a firing angle $$\alpha = {30^0}.$$ The peak to peak voltage ripple expressed as a ratio of the peak output $$dc$$ voltage at the output of the converter bridge is
A
$$0.5$$
B
$$\sqrt 3 /2$$
C
$$1 - \sqrt 3 /2$$
D
$$\sqrt 3 - 1$$
GATE EE Subjects
Electromagnetic Fields
Signals and Systems
Engineering Mathematics
General Aptitude
Power Electronics
Power System Analysis
Analog Electronics
Control Systems
Digital Electronics
Electrical Machines
Electric Circuits
Electrical and Electronics Measurement
EXAM MAP
Joint Entrance Examination