1
GATE EE 2008
MCQ (Single Correct Answer)
+2
-0.6
A three phase fully controlled bridge converter is feeding a load drawing a constant and ripple free load current of $$10$$ $$A$$ at a firing angle of $${30^ \circ }.$$ The approximate Total Harmonic Distortion $$(\% \,\,THD)$$ and $$r.m.s$$ value of fundamental component of the input current will respectively be
A
$$31\,\% $$ and $$6.8$$ $$A$$
B
$$31\,\% $$ $$7.8$$ $$A$$
C
$$66\,\% $$ $$6.8$$ $$A$$
D
$$66\,\% $$ $$7.8$$ $$A$$
2
GATE EE 2008
MCQ (Single Correct Answer)
+2
-0.6
A single phase full bridge converter supplies a load drawing constant and ripple free load current. If the triggering angle is $${30^ \circ },$$ the input power factor will be
A
$$0.65$$
B
$$0.78$$
C
$$0.85$$
D
$$0.866$$
3
GATE EE 2008
MCQ (Single Correct Answer)
+2
-0.6
In the circuit shown in the figure, the switch is operated at a duty cycle of $$0.5.$$ A large capacitor current is connected across the load. The inductor current is assumed to be continuous. GATE EE 2008 Power Electronics - Choppers and Commutation Techniques Question 6 English

The average voltage across the load and the average current through the diode will respectively be

A
$$10$$ $$V,$$ $$2A$$
B
$$10$$ $$V,$$ $$8A$$
C
$$40$$ $$V,$$ $$2A$$
D
$$40$$ $$V,$$ $$8A$$
4
GATE EE 2008
MCQ (Single Correct Answer)
+1
-0.3
A $$3$$ - phase voltage source Inverter is operated in $${180^ \circ }$$ conduction mode. Which one of the following statements is true?
A
Both pole - voltage and line - voltage will have $${3^{rd}}$$ harmonic components
B
Pole - voltage will have $${3^{rd}}$$ harmonic component but line - voltage will be free from $${3^{rd}}$$ harmonic
C
Line - voltage will have $${3^{rd}}$$ harmonic component but pole - voltage will be free from $${3^{rd}}$$ harmonic
D
Both pole - voltage and line - voltage will be free from $${3^{rd}}$$ harmonic components
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