1
GATE EE 2011
+2
-0.6
A solar energy installation utilize a three – phase bridge converter to feed energy into power system through a transformer of $$400V/400 V,$$ as shown below. The energy is collected in a bank of $$400$$ $$V$$ battery and is connected to converter through a large filter choke of resistance $$10\Omega$$.

The $$kVA$$ rating of the input transformer is

A
$$53.2kVA$$
B
$$46.0kVA$$
C
$$22.6kVA$$
D
None
2
GATE EE 2011
+2
-0.6
A solar energy installation utilize a three – phase bridge converter to feed energy into power system through a transformer of $$400V/400 V,$$ as shown below. The energy is collected in a bank of $$400$$ $$V$$ battery and is connected to converter through a large filter choke of resistance $$10\Omega$$.

The maximum current through the battery will be

A
$$14$$ $$A$$
B
$$40$$ $$A$$
C
$$80$$ $$A$$
D
$$94$$ $$A$$
3
GATE EE 2011
+2
-0.6
A voltage commutated chopper circuit, operated at $$500Hz,$$ is shown below. If the maximum value of load current is $$10A,$$ then the maximum current through the main $$(M)$$ and auxiliary $$(A)$$ thyristors will be
A
$${i_{M\max }} = 12\,A$$ and $$\,{i_{A\max }} = 10\,A$$
B
$${i_{M\max }} = 12\,A$$ and $$\,{i_{A\max }} = 2\,A$$
C
$${i_{M\max }} = 10\,A$$ and $$\,{i_{A\max }} = 12\,A$$
D
$${i_{M\max }} = 10\,A$$ and $$\,{i_{A\max }} = 8\,A$$
4
GATE EE 2011
+1
-0.3
A three-phase current source inverter used for the speed control of an induction motor is to be realized using MOSFET switches as shown below. Switches $${S_1}$$ to $${S_6}$$ are identical switches.

The proper configuration for realizing switches $${S_1}$$ to $${S_6}$$ is

A
B
C
D
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