Inverters · Power Electronics · GATE EE

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Marks 1

GATE EE 2022
Consider an ideal full-bridge single-phase DC-AC inverter with a DC bus voltage magnitude of 1000 V. The inverter output voltage v(t) shown below, is ...
GATE EE 2022
A 3-phase grid-connected voltage source converter with DC link voltage of 1000 V is switched using sinusoidal Pulse Width Modulation (PWM) technique. ...
GATE EE 2017 Set 1
In the converter circuit shown below, the switches are controlled such that the load voltage $${v_0}\left( t \right)$$ is a $$400$$ $$Hz$$ square wave...
GATE EE 2017 Set 1
A $$3$$-phase voltage source inverter is supplied from a $$600V$$ $$DC$$ source as shown in the figure below. For a star connected resistive load of $...
GATE EE 2017 Set 2
A three-phase voltage source inverter with ideal devices operating in $${180^ \circ }$$ conduction mode is feeding a balanced star-connected resistive...
GATE EE 2011
A three-phase current source inverter used for the speed control of an induction motor is to be realized using MOSFET switches as shown below. Switche...
GATE EE 2008
A $$3$$ - phase voltage source Inverter is operated in $${180^ \circ }$$ conduction mode. Which one of the following statements is true?
GATE EE 2007
A three - phase fully - controlled thyristor bridge converter is used as line commuted inverter to feed $$50kW$$ power $$420$$ $$V$$ $$dc$$ to a thre...
GATE EE 2007
''Six $$MOSFETS$$ connected in a bridge configuration (having no other power device) MUST be operated as Voltage Source Inverter $$(VSI)''.$$ This st...
GATE EE 2005
The output voltage waveform of a three - phase square-wave inverter contains
GATE EE 2000
Triangular $$PWM$$ control, when applied to a $$BJT$$ based three phase voltage source inverter, introduces.
GATE EE 1999
A $$PWM$$ switching scheme is used with a three phase inverter to
GATE EE 1995
A single phase Inverter with square wave output voltage will have in its output waveform a fifth harmonic component equal to ______ percentage of the ...
GATE EE 1995
An inverter capable of supplying a balanced three - phase variable voltage variable frequency output is feeding a three - phase induction motor rated ...
GATE EE 1994
A line - commutated inverter changes $$dc$$ voltage to $$ac$$ voltage
GATE EE 1993
When a line commutated converter operates in the inverter mode

Marks 2

GATE EE 2017 Set 2
The figure below shows a half-bridge voltage source inverter supplying an $$RL$$-load with $$R = 40\,\,\Omega $$ and $$L = \left( {{{0.3} \over \pi }}...
GATE EE 2016 Set 1
The switches $$T1$$ and $$T2$$ in Figure are switched in a complementary fashion with sinusoidal pulse width modulation technique. The modulating volt...
GATE EE 2015 Set 1
The single-phase full-bridge voltage source inverter $$(VSI),$$ shown in figure, has an output frequency of $$50$$ $$Hz$$. It uses unipolar pulse widt...
GATE EE 2014 Set 1
In the figure shows on period of the output voltage of an inverter. $$\alpha $$ should be chosen such that $${60^0} < \alpha < {90^0}.$$ If $$r...
GATE EE 2014 Set 3
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 2013
The Voltage Source Inverter $$(VSI)$$ shown in the figure below is switched to provide a $$50$$ $$Hz,$$ square-wave $$ac$$ output voltage ($${V_0}$$) ...
GATE EE 2013
The Voltage Source Inverter $$(VSI)$$ shown in the figure below is switched to provide a $$50$$ $$Hz,$$ square-wave $$ac$$ output voltage ($${V_0}$$) ...
GATE EE 2012
In the $$3$$-phase inverter circuit shown, the load is balanced and the gating scheme is $${180^ \circ }$$ -conduction mode. All the switching devices...
GATE EE 2012
In the $$3$$-phase inverter circuit shown, the load is balanced and the gating scheme is $${180^ \circ }$$ -conduction mode. All the switching devices...
GATE EE 2009
The Current Source Inverter shown in Figure is operated by alternately turning on thyristor pairs $$\left( {{T_1},\,\,{T_2}} \right)$$ and $$\left( {{...
GATE EE 2008
A single phase voltage source inverter is feeding a purely inductive load as shown in the figure. The inverter is operated at $$50$$ $$Hz$$ in $${18...
GATE EE 2007
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....
GATE EE 2007
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. ...
GATE EE 2003
An inverter has a periodic output voltage with the output waveform as shown in figure When the conduction angle $$\alpha = {120^0},$$ the $$rms$$ f...
GATE EE 2003
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 out...
GATE EE 2002
Fig. $$(a)$$ shows an inverter circuit with a $$dc$$ source voltage $${V_{s}}$$. The semiconductor switches of the inverter are operated in such a man...
GATE EE 2001
A single - phase full-bridge voltage source inverter feeds a purely inductive load, as shown in figure. when $${T_1},{T_2},\,\,\,\,\,{T_3},{T_4}$$ are...
GATE EE 2000
A three phase voltage source inverter supplies a purely inductive three phase load. Upon Fourier analysis, the output voltage waveform is found to hav...

Marks 5

GATE EE 1997
A single - phase bridge inverter is fed from a $$200V$$ $$d.c$$ supply and is operated at $$50$$ $$Hz.$$ It is connected to a load having a resistance...
GATE EE 1995
Match the following $$(P)$$ single phase fully controlled $$ac-dc$$ converter $$(Q)$$ Voltage commutated $$dc-ac$$ chopper ($$E$$ = input $$dc$$ ...
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