1
GATE EE 2008
MCQ (Single Correct Answer)
+2
-0.6
A single phase fully controlled converter bridge is used for electrical braking of a separately excited $$dc$$ motor. The $$dc$$ motor load is represented by an equivalent circuit as shown in the figure. GATE EE 2008 Power Electronics - Single and Three Phase Rectifier Question 10 English

Assume that the load inductance is sufficient to ensure continuous and ripple free load current. The firing angle of the bridge for a load current of $${{\rm I}_0} = 10\,\,A$$ will be

A
$${44^ \circ }$$
B
$${51^ \circ }$$
C
$${129^ \circ }$$
D
$${136^ \circ }$$
2
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 1 English
A
$${0^ \circ } < \alpha < {45^ \circ }$$
B
$${45^ \circ } < \alpha < {135^ \circ }$$
C
$${90^ \circ } < \alpha < {180^ \circ }$$
D
$${135^ \circ } < \alpha < {180^ \circ }$$
3
GATE EE 2008
MCQ (Single Correct Answer)
+1
-0.3
An extra high voltage transmission line of length $$300$$ km can be approximate by a lossless line having propagation constant $$\beta = 0.00127$$ radians per km. then the percentage ratio of line length to wavelength will be given by
A
$$24.24$$%
B
$$12.12$$%
C
$$19.05$$%
D
$$6.06$$%
4
GATE EE 2008
MCQ (Single Correct Answer)
+2
-0.6
A lossless transmission line having Surge Impedance Loading $$(SIL)$$ of $$2280$$ $$MW.$$ A Series capacitive compensation of $$30$$% is emplaced. Then $$SIL$$ of the compensated transmission line will be
A
$$1835$$ $$MW$$
B
$$2280$$ $$MW$$
C
$$2725$$ $$MW$$
D
$$3257$$ $$MW$$
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