1
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 10 English](https://gateclass.static.cdn.examgoal.net/1H5yOemdtk7nciXhC/TzK0iPC0wRl8U53NkqLqTblLbHDzH/pA3YyN42Hjal7Nuj22OFS7/uploadfile.jpg)
Your input ____
2
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 9 English 1](https://imagex.cdn.examgoal.net/e2MmWZAFAVfFiGX1b/zbSxFRSnqZPb71D9GLkPizKIRBaSo/vdeY3ck9vb9eIXjW1jiXE8/uploadfile.jpg)
![GATE EE 2014 Set 3 Power Electronics - Inverters Question 9 English 2](https://gateclass.static.cdn.examgoal.net/13up4MUn68dL1rxsr/sKURqIM5IM10d6eFJvOUnSTcEuaZb/uFP8AAYGWE59ufXQ1ZqNBt/uploadfile.jpg)
If the load current is sinusoidal and is zero at $$0,\,\,\pi ,2\pi ....,$$ the node voltage $${V_{AO}}$$ has the waveform
3
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 11 English](https://gateclass.static.cdn.examgoal.net/fExuySBbsYF1JYPi4/x5RAdDzqW74KsNqMuKyUghM52ec9V/KZBtDxZWZvTIzPZXIn4ynw/uploadfile.jpg)
Appropriate transition $$i.e,,$$ $$Zero$$ voltage switching $$(ZVS)/Zero$$ current switching $$(ZCS)$$ of the $$IGBTs$$ during turn - on/turn off is
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 12 English](https://gateclass.static.cdn.examgoal.net/fExuySBbsYF1JYPi4/x5RAdDzqW74KsNqMuKyUghM52ec9V/KZBtDxZWZvTIzPZXIn4ynw/uploadfile.jpg)
In the interval when $${V_0} < 0$$ and $${i_0} > 0$$ the pair of devices which conducts the load current is
Questions Asked from Inverters (Marks 2)
Number in Brackets after Paper Indicates No. of Questions
GATE EE Subjects
Electric Circuits
Electromagnetic Fields
Signals and Systems
Electrical Machines
Engineering Mathematics
General Aptitude
Power System Analysis
Electrical and Electronics Measurement
Analog Electronics
Control Systems
Power Electronics