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1
GATE EE 1998
MCQ (Single Correct Answer)
+2
-0.6
A $$3$$-phsae, fully controlled, converter is feeding power into a $$d.c.$$ load at a constant current of $$150A.$$ The $$r.m.s$$ current through each thyristor of the converter is
A
$$50A$$
B
$$100A$$
C
$${{150\sqrt 2 } \over {\sqrt 3 }}$$
D
$${{150} \over {\sqrt 3 }}$$
2
GATE EE 1998
MCQ (Single Correct Answer)
+2
-0.6
When the firing angle $$\alpha $$ of a single phase, fully controlled rectifier feeding constant $$d.c.$$ current into a load is $${30^ \circ }$$ , the displacement power factor of the rectifier is
A
$$1$$
B
$$0.5$$
C
$${1 \over {\sqrt 3 }}$$
D
$${{\sqrt 3 } \over 2}$$
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