1
GATE EE 2008
+2
-0.6
A single phase voltage source inverter is feeding a purely inductive load as shown in the figure.

The inverter is operated at $$50$$ $$Hz$$ in $${180^0}$$ square wave mode. Assume that the load current does not have any $$dc$$ component. The peak value of the inductor current $${i_0}$$ will be

A
$$6.37$$ $$A$$
B
$$10$$ $$A$$
C
$$20$$ $$A$$
D
$$40$$ $$A$$
2
GATE EE 2007
+2
-0.6
A single - phase voltage source inverter is controlled in a single pulse - width modulated mode with a pulse width of $${150^0}$$ in each half cycle. Total harmonic distortion is defined as
$$THD = {{\sqrt {V_{rms}^2 - V_1^2} } \over {{V_1}}} \times 100,\,\,\,$$ Where $${{V_1}}$$ is the $$rms$$ value of the fundamental component of the voltage. The $$THD$$ of output $$ac$$ voltage waveform is
A
$$65.65\%$$
B
$$48.42\%$$
C
$$31.83\%$$
D
$$30.49\%$$
3
GATE EE 2007
+2
-0.6
A single - phase inverter is operated in $$PWM$$ mode generating a single - pulse of width $$2d$$ in the center of each half cycle as shown in figure. It is found that the output voltage is free from $${5^{th}}$$ harmonic for pulse width $${144^0}.$$ What will be percentage of $${3^{rd}}$$ harmonic present in the output voltage $$\,\left( {{V_{03}}/{V_{01\,\,\,\max }}} \right)?$$
A
$$0.0\%$$
B
$$19.6\,\,\%$$
C
$$31.7\,\,\%$$
D
$$53.9\,\,\%$$
4
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
$$1.27$$ $$V$$
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