1
GATE EE 2015 Set 1
Numerical
+2
-0
The single-phase full-bridge voltage source inverter $$(VSI),$$ shown in figure, has an output frequency of $$50$$ $$Hz$$. It uses unipolar pulse width modulation with switching frequency of $$50$$ $$kHz$$ and modulation index of $$0.7.$$ For
$${V_{in}} = 100\,V\,\,DC,\,\,L = 9.55\,\,mH,\,C = 63.66\,\,\mu F,$$ and $$R = 5\,\Omega ,$$ the amplitude of GATE EE 2015 Set 1 Power Electronics - Inverters Question 7 English
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2
GATE EE 2014 Set 1
Numerical
+2
-0
In the figure shows on period of the output voltage of an inverter. $$\alpha $$ should be chosen such that $${60^0} < \alpha < {90^0}.$$ If $$rms$$ value of the fundamental component is $$50$$ $$V$$, then $$\alpha $$ in degree is _________. GATE EE 2014 Set 1 Power Electronics - Inverters Question 9 English
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3
GATE EE 2014 Set 3
MCQ (Single Correct Answer)
+2
-0.6
A single - phase voltage source inverter shown in figure is feeding power to load. The triggering pulses of the devices are also shown in the figure. GATE EE 2014 Set 3 Power Electronics - Inverters Question 8 English 1 GATE EE 2014 Set 3 Power Electronics - Inverters Question 8 English 2

If the load current is sinusoidal and is zero at $$0,\,\,\pi ,2\pi ....,$$ the node voltage $${V_{AO}}$$ has the waveform

A
GATE EE 2014 Set 3 Power Electronics - Inverters Question 8 English Option 1
B
GATE EE 2014 Set 3 Power Electronics - Inverters Question 8 English Option 2
C
GATE EE 2014 Set 3 Power Electronics - Inverters Question 8 English Option 3
D
GATE EE 2014 Set 3 Power Electronics - Inverters Question 8 English Option 4
4
GATE EE 2013
MCQ (Single Correct Answer)
+2
-0.6
The Voltage Source Inverter $$(VSI)$$ shown in the figure below is switched to provide a $$50$$ $$Hz,$$ square-wave $$ac$$ output voltage ($${V_0}$$) across an $$R$$-$$L$$ load. Reference polarity of $${V_0}$$ and reference direction of the output current $${I_0}$$ are indicated in the figure. It is given that $$R = 3\,\,\Omega ,\,\,L = 9.55\,\,mH.$$ GATE EE 2013 Power Electronics - Inverters Question 10 English

Appropriate transition $$i.e,,$$ $$Zero$$ voltage switching $$(ZVS)/Zero$$ current switching $$(ZCS)$$ of the $$IGBTs$$ during turn - on/turn off is

A
$$ZVS$$ during turn off
B
$$ZVS$$ during turn -on
C
$$ZCS$$ during turn off
D
$$ZCS$$ during turn - on
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