1
GATE EE 2011
MCQ (Single Correct Answer)
+2
-0.6
The input voltage given to a converter is
$${V_i} = 100\sqrt 2 \,\,\,\sin \,\,\,\left( {100\pi t} \right)\,\,V$$
The current drawn by the converter is
$${i_i} = 10\sqrt 2 \,\,\,\sin \,\,\,\left( {100\pi t - {\pi \over 3}} \right)\,\, + 5\sqrt 2 $$
$$\sin \left( {300\pi t + {\pi \over 4}} \right)\,\, + \,\,2\sqrt 2 \,\,\sin \left( {500\pi t - {\pi \over 6}} \right)A$$

The input power factor of the converter is

A
$$0.31$$
B
$$0.44$$
C
$$0.5$$
D
$$0.71$$
2
GATE EE 2011
MCQ (Single Correct Answer)
+2
-0.6
The input voltage given to a converter is
$${V_i} = 100\sqrt 2 \,\,\,\sin \,\,\,\left( {100\pi t} \right)\,\,V$$
The current drawn by the converter is
$${i_i} = 10\sqrt 2 \,\,\,\sin \,\,\,\left( {100\pi t - {\pi \over 3}} \right)\,\, + 5\sqrt 2 $$
$$\sin \left( {300\pi t + {\pi \over 4}} \right)\,\, + \,\,2\sqrt 2 \,\,\sin \left( {500\pi t - {\pi \over 6}} \right)A$$

The active power drawn by the converter is

A
$$181$$ $$W$$
B
$$500$$ $$W$$
C
$$707$$ $$W$$
D
$$887$$ $$W$$
3
GATE EE 2009
MCQ (Single Correct Answer)
+2
-0.6
The circuit shows an ideal diode connected to a pure inductor and is connected to a purely sinusoidal $$50$$ $$Hz$$ voltage source. Under ideal condition the current waveform through the indicator will look like GATE EE 2009 Power Electronics - Single and Three Phase Rectifier Question 12 English
A
GATE EE 2009 Power Electronics - Single and Three Phase Rectifier Question 12 English Option 1
B
GATE EE 2009 Power Electronics - Single and Three Phase Rectifier Question 12 English Option 2
C
GATE EE 2009 Power Electronics - Single and Three Phase Rectifier Question 12 English Option 3
D
GATE EE 2009 Power Electronics - Single and Three Phase Rectifier Question 12 English Option 4
4
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 13 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
$${136^ \circ }$$
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