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1
GATE EE 2008
MCQ (Single Correct Answer)
+1
-0.3
In the single phase voltage controller circuit shown in the figure, for what range of triggering angle $$\left( \alpha \right)$$, the output voltage $$\left( {{V_0}} \right)$$ is not controllable? GATE EE 2008 Power Electronics - Ac Voltage Controllers Question 4 English
A
$${0^ \circ } < \alpha < {45^ \circ }$$
B
$${45^ \circ } < \alpha < {135^ \circ }$$
C
$${90^ \circ } < \alpha < {180^ \circ }$$
D
$${135^ \circ } < \alpha < {180^ \circ }$$
2
GATE EE 1994
Fill in the Blanks
+1
-0
Thysistor circuits that directly convert poly phase $$ac$$ voltage from one frequency to another frequency are called _______.
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