GATE EE 2007 | Inverters Question 20 | Power Electronics

GATE EE 2007

MCQ (Single Correct Answer)

-0.3

''Six $$MOSFETS$$ connected in a bridge configuration (having no other power device) MUST be operated as Voltage Source Inverter $$(VSI)''.$$ This statement is

True, because being majority carrier devices. $$MOSFETS$$ are voltage driven

True, because $$MOSFETs$$ have inherently anti - parallel diodes

False, because it can be operated both as Current Source Inverter $$(CSI)$$ or a $$VSI$$

False, because $$MOSFETs$$ can be operated as execellent constant current sources in the saturation region

GATE EE 2005

MCQ (Single Correct Answer)

-0.3

The output voltage waveform of a three - phase square-wave inverter contains

only even harmonics

both odd and even harmonics

only odd harmonics

only triple harmonics

GATE EE 2000

MCQ (More than One Correct Answer)

-0.3

Triangular $$PWM$$ control, when applied to a $$BJT$$ based three phase voltage source inverter, introduces.

low order harmonic voltages on the $$dc$$ side.

very high order harmonic voltage on the $$dc$$ side

low order harmonic voltage on the $$ac$$ side

very high order harmonic voltage on the $$ac$$ side

GATE EE 1999

MCQ (Single Correct Answer)

-0.3

A $$PWM$$ switching scheme is used with a three phase inverter to

Reduce the total harmonic distortion with modest filtering

Minimize the load on the $$DC$$ side

Increase the life of the batteries

Reduce low order harmonics and increase high order harmonics

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