GATE EE 2005 | GATE EE Year Wise Previous Years Questions

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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 2005

MCQ (Single Correct Answer)

-0.6

The given figure shows a step $$-$$ down chopper switched at $$1$$ $$KHz$$ with a duty ratio $$D = 0.5.$$ The peak - peak ripple in the load current is close to GATE EE 2005 Power Electronics - Choppers and Commutation Techniques Question 30 English

GATE EE 2005 Power Electronics - Choppers and Commutation Techniques Question 30 English

$$10$$ $$A$$

$$0.5$$ $$A$$

$$0.125$$ $$A$$

$$0.25$$ $$A$$

GATE EE 2005

MCQ (Single Correct Answer)

-0.6

Consider a phase $$-$$ controlled converter shown in figure The thyristor is fired at an angle $$\alpha $$ in every positive half cycle of the input voltage. If the peak value of the instantaneous output voltage equals $$230$$ $$V,$$ the firing angle $$\alpha $$ is close to GATE EE 2005 Power Electronics - Single and Three Phase Rectifier Question 37 English

GATE EE 2005 Power Electronics - Single and Three Phase Rectifier Question 37 English

$${45^ \circ }$$

$${135^ \circ }$$

$${90^ \circ }$$

$${83.6^ \circ }$$

GATE EE 2005

MCQ (Single Correct Answer)

-0.3

A three - phase diode bridge rectifier is fed from a $$400$$ $$V$$ $$RMS$$. $$50$$ $$Hz$$, three $$-$$ phase $$AC$$ source. If the load is purely resistive, then peak instantaneous output voltage is equal to

$$400\,V$$

$$400\,\,\sqrt 2 V$$

$$400\,\,\sqrt {{2 \over 3}\,} \,V$$

$${{400} \over {\sqrt 3 \,V}}$$

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