GATE EE
Power Electronics
Inverters
Previous Years Questions

Marks 1

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 ...
A 3-phase grid-connected voltage source converter with DC link voltage of 1000 V is switched using sinusoidal Pulse Width Modulation (PWM) technique. ...
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...
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 $...
A three-phase voltage source inverter with ideal devices operating in $${180^ \circ }$$ conduction mode is feeding a balanced star-connected resistive...
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...
A $$3$$ - phase voltage source Inverter is operated in $${180^ \circ }$$ conduction mode. Which one of the following statements is true?
A three - phase fully - controlled thyristor bridge converter is used as line commuted inverter to feed $$50kW$$ power $$420$$ $$V$$ $$dc$$ to a thre...
''Six $$MOSFETS$$ connected in a bridge configuration (having no other power device) MUST be operated as Voltage Source Inverter $$(VSI)''.$$ This st...
The output voltage waveform of a three - phase square-wave inverter contains
Triangular $$PWM$$ control, when applied to a $$BJT$$ based three phase voltage source inverter, introduces.
A $$PWM$$ switching scheme is used with a three phase inverter to
An inverter capable of supplying a balanced three - phase variable voltage variable frequency output is feeding a three - phase induction motor rated ...
A single phase Inverter with square wave output voltage will have in its output waveform a fifth harmonic component equal to ______ percentage of the ...
A line - commutated inverter changes $$dc$$ voltage to $$ac$$ voltage
When a line commutated converter operates in the inverter mode

Marks 2

The figure below shows a half-bridge voltage source inverter supplying an $$RL$$-load with $$R = 40\,\,\Omega $$ and $$L = \left( {{{0.3} \over \pi }}...
The switches $$T1$$ and $$T2$$ in Figure are switched in a complementary fashion with sinusoidal pulse width modulation technique. The modulating volt...
The single-phase full-bridge voltage source inverter $$(VSI),$$ shown in figure, has an output frequency of $$50$$ $$Hz$$. It uses unipolar pulse widt...
In the figure shows on period of the output voltage of an inverter. $$\alpha $$ should be chosen such that $${60^0} < \alpha < {90^0}.$$ If $$r...
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. ...
The Voltage Source Inverter $$(VSI)$$ shown in the figure below is switched to provide a $$50$$ $$Hz,$$ square-wave $$ac$$ output voltage ($${V_0}$$) ...
The Voltage Source Inverter $$(VSI)$$ shown in the figure below is switched to provide a $$50$$ $$Hz,$$ square-wave $$ac$$ output voltage ($${V_0}$$) ...
In the $$3$$-phase inverter circuit shown, the load is balanced and the gating scheme is $${180^ \circ }$$ -conduction mode. All the switching devices...
In the $$3$$-phase inverter circuit shown, the load is balanced and the gating scheme is $${180^ \circ }$$ -conduction mode. All the switching devices...
The Current Source Inverter shown in Figure is operated by alternately turning on thyristor pairs $$\left( {{T_1},\,\,{T_2}} \right)$$ and $$\left( {{...
A single phase voltage source inverter is feeding a purely inductive load as shown in the figure. The inverter is operated at $$50$$ $$Hz$$ in $${18...
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. ...
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....
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...
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...
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...
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...
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

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...
Match the following $$(P)$$ single phase fully controlled $$ac-dc$$ converter $$(Q)$$ Voltage commutated $$dc-ac$$ chopper ($$E$$ = input $$dc$$ ...
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