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Power Electronics
Choppers and Commutation Techniques
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Single and Three Phase Rectifier
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Power Semiconductor Devices
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Ac Voltage Controllers
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Inverters
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1
GATE EE 2007
MCQ (Single Correct Answer)
+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
$$30.49\% $$
2
GATE EE 2003
MCQ (Single Correct Answer)
+2
-0.6
An inverter has a periodic output voltage with the output waveform as shown in figure GATE EE 2003 Power Electronics - Inverters Question 20 English

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
$$\alpha = {120^ \circ }$$
3
GATE EE 2003
MCQ (Single Correct Answer)
+2
-0.6
An inverter has a periodic output voltage with the output waveform as shown in figure GATE EE 2003 Power Electronics - Inverters Question 21 English

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 2002
MCQ (Single Correct Answer)
+2
-0.6
Fig. $$(a)$$ shows an inverter circuit with a $$dc$$ source voltage $${V_{s}}$$. The semiconductor switches of the inverter are operated in such a manner that the pole voltages $${V_{10}}$$ and $${V_{20}}$$ are as shown in fig.
Fig. $$(b).$$ What is the rms value of the pole-to-pole voltage $${V_{12}}$$: GATE EE 2002 Power Electronics - Inverters Question 22 English 1 GATE EE 2002 Power Electronics - Inverters Question 22 English 2
A
$${{{V_s}\phi } \over {\pi \sqrt 2 }}$$
B
$${V_s}\sqrt {{\phi \over \pi }} $$
C
$${V_s}\sqrt {{\phi \over {2\pi }}} $$
D
$${{{V_s}} \over \pi }$$
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Questions Asked from Marks 2
GATE EE 2025 (1) GATE EE 2024 (1) GATE EE 2022 (2) GATE EE 2017 Set 2 (1) GATE EE 2016 Set 1 (1) GATE EE 2015 Set 1 (1) GATE EE 2014 Set 3 (1) GATE EE 2014 Set 1 (1) GATE EE 2013 (2) GATE EE 2012 (2) GATE EE 2009 (1) GATE EE 2008 (1) GATE EE 2007 (2) GATE EE 2003 (2) GATE EE 2002 (1) GATE EE 2001 (1) GATE EE 2000 (1)
GATE EE Subjects
Electromagnetic Fields
Signals and Systems
Engineering Mathematics
General Aptitude
Power Electronics
Power System Analysis
Analog Electronics
Control Systems
Digital Electronics
Electrical Machines
Electric Circuits
Electrical and Electronics Measurement