GATE EE 2006 | Power Semiconductor Devices Question 17 | Power Electronics

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 5 English

GATE EE 2006 Power Electronics - Power Semiconductor Devices Question 5 English

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

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

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

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

GATE EE 2005

MCQ (Single Correct Answer)

-0.6

The figure shows the voltage across a power semiconductor device and the current through the device during a switching transition. Is the transition a turn ON transition or a turn OFF transition? What is the energy lost during the transition? GATE EE 2005 Power Electronics - Power Semiconductor Devices Question 12 English

GATE EE 2005 Power Electronics - Power Semiconductor Devices Question 12 English

Turn ON, $${{V{\rm I}} \over {2\left( {{t_1} + {t_2}} \right)}}$$

Turn OFF, $$V{\rm I}\left( {{t_1} + {t_2}} \right)$$

Turn ON, $$V{\rm I}\left( {{t_1} + {t_2}} \right)$$

Turn OFF, $${{V{\rm I}} \over {2\left( {{t_1} + {t_2}} \right)}}$$

GATE EE 2005

MCQ (Single Correct Answer)

-0.6

An electronic switch $$S$$ is required to block voltages of either polarity during its OFF state as shown in figure (a). This switch is required to conduct in only one direction during its ON state as shown in the figure (b). GATE EE 2005 Power Electronics - Power Semiconductor Devices Question 11 English 1

GATE EE 2005 Power Electronics - Power Semiconductor Devices Question 11 English 1

Which of the following are valid realizations of the switch $$s$$?

GATE EE 2005 Power Electronics - Power Semiconductor Devices Question 11 English 2

Only $$1$$

$$1$$ and $$2$$

$$1$$ and $$3$$

$$3$$ and $$4$$

GATE EE 2004

MCQ (Single Correct Answer)

-0.6

A $$MOSFET$$ rated for $$15 A,$$ carries a periodic current as shown in figure. The ON state resistance of the MOSFET is $$0.15$$ $$\Omega .$$ The average ON state loss in the $$MOSFET$$ is GATE EE 2004 Power Electronics - Power Semiconductor Devices Question 13 English