1
GATE EE 2003
+2
-0.6
A phase - controlled half - controlled single - phase converter is shown in figure. The control angle $$\alpha = {30^ \circ }$$

The output $$dc$$ voltage wave shape will be as shown in

A
B
C
D
2
GATE EE 2003
+2
-0.6
A chopper is employed to charge a battery as shown in figure. The charging current is $$5A$$. The duty ratio is $$0.2.$$ The chopper output voltage is also shown in figure. The peak to peak ripple current in the charging current is
A
$$0.48$$ $$A$$
B
$$1.2$$ $$A$$
C
$$2.4$$ $$A$$
D
$$1$$ $$A$$
3
GATE EE 2003
+2
-0.6
An inverter has a periodic output voltage with the output waveform as shown in figure

When the conduction angle $$\alpha = {120^0},$$ the $$rms$$ fundamental component of the output voltage is

A
$$0.78$$ $$V$$
B
$$1.10$$ $$V$$
C
$$0.90$$ $$V$$
D
$$1.27$$ $$V$$
4
GATE EE 2003
+2
-0.6
An inverter has a periodic output voltage with the output waveform as shown in figure

With reference to the output waveform given in figure, the output of the converter will be free form $${5^{th}}$$ harmonic when

A
$$\alpha = {72^ \circ }$$
B
$$\alpha = {36^ \circ }$$
C
$$\alpha = {150^ \circ }$$
D
$$\alpha = {120^ \circ }$$
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