NEW
New Website Launch
Experience the best way to solve previous year questions with mock tests (very detailed analysis), bookmark your favourite questions, practice etc...
1

GATE EE 2005

MCQ (Single Correct Answer)
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

MCQ (Single Correct Answer)
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
$$2400$$ $$Hz$$
3

GATE EE 2004

MCQ (Single Correct Answer)
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
$$50$$ $$V$$
4

GATE EE 2003

MCQ (Single Correct Answer)
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
$$\sqrt 3 - 1$$

Joint Entrance Examination

JEE Main JEE Advanced WB JEE

Graduate Aptitude Test in Engineering

GATE CSE GATE ECE GATE EE GATE ME GATE CE GATE PI GATE IN

Medical

NEET

CBSE

Class 12