GATE EE 2006 | GATE EE Year Wise Previous Years Questions

GATE EE 2006

MCQ (Single Correct Answer)

-0.6

A $$3$$ $$-$$ phase fully controlled bridge converter with free wheeling diode is fed from $$400$$ $$V$$, $$50$$ $$Hz$$ $$AC$$ source and is operating at a firing angle of $${60^ \circ }.$$ The load current is assumed constant at $$10A$$ due to high load inductance The input displacement factor $$(IDF)$$ and the input power factor $$(IPF)$$ of the converter will be

$$IDF=0.867:IPF=0.828$$

$$IDF=0.867:IPF=0.552$$

$$IDF=0.5:IPF=0.478$$

$$IDF=0.5:IPF=0.318$$

GATE EE 2006

MCQ (Single Correct Answer)

-0.6

An $$SCR$$ having a turn ON time of $$5\,\,\mu \,\,\sec $$, latching current of $$50$$ $$mA$$ and holding current of $$40$$ $$mA$$ is triggered by a short duration pulse and is used in the circuit shown in figure The minimum pulse width required To turn the $$SCR$$ ON will be GATE EE 2006 Power Electronics - Power Semiconductor Devices Question 3 English

GATE EE 2006 Power Electronics - Power Semiconductor Devices Question 3 English

$$251\,\,\mu \,\,\sec $$

$$150\,\,\mu \,\,\sec $$

$$100\,\,\mu \,\,\sec $$

$$5\,\,\mu \,\,\sec $$

GATE EE 2006

MCQ (Single Correct Answer)

-0.6

A voltage commutated chopper operating at $$1$$ $$kHz$$ is used to control the speed of $$dc$$ motor as shown in figure. The load current is assumed to be constant at $$10$$ $$A.$$ GATE EE 2006 Power Electronics - Choppers and Commutation Techniques Question 8 English

GATE EE 2006 Power Electronics - Choppers and Commutation Techniques Question 8 English

The average output voltage of the chopper will be

$$70$$ $$V$$

$$47.5$$

$$35$$ $$V$$

$$0$$

GATE EE 2006

MCQ (Single Correct Answer)

-0.6

GATE EE 2006 Power Electronics - Choppers and Commutation Techniques Question 9 English

The minimum time in $$\mu $$ sec for which the $$SCR$$ $$M$$ should be ON is

$$280$$

$$140$$

$$70$$

$$0$$

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