1
GATE EE 2004
MCQ (Single Correct Answer)
+2
-0.6
Figure shows a chopper. The device $${S_1}$$ is the main switching device. $${S_2}$$ is the auxiliary commutation device. $${S_1}$$ is rated for $$400V, 60A.$$ $${S_2}$$ is rated for $$400V, 30 A.$$ the load current is $$20$$ $$A.$$ The main device operates with a duty ratio of $$0.5.$$ The peak current through $${S_1}$$ is
![GATE EE 2004 Power Electronics - Choppers and Commutation Techniques Question 31 English](https://gateclass.cdn.examgoal.net/UhsM81NjH5O8GtSU5/46aMiLJteXs3XSo1fHG0Xf0FngaiB/LBZO7Q8AY6feI3qoGTow1D/uploadfile.jpg)
![GATE EE 2004 Power Electronics - Choppers and Commutation Techniques Question 31 English](https://gateclass.cdn.examgoal.net/UhsM81NjH5O8GtSU5/46aMiLJteXs3XSo1fHG0Xf0FngaiB/LBZO7Q8AY6feI3qoGTow1D/uploadfile.jpg)
2
GATE EE 2004
MCQ (Single Correct Answer)
+2
-0.6
Figure shows a chopper operating from a $$100$$ $$V$$ $$dc$$ input. The duty ratio of the main switch $$S$$ is $$0.8.$$ The load is sufficiently inductive so that the load current is ripple free. The average current through the diode $$D$$ under steady state is
![GATE EE 2004 Power Electronics - Choppers and Commutation Techniques Question 32 English](https://imagex.cdn.examgoal.net/zK2Y3O7R8XnULEzx7/otbvIUKi7YK9JGWt7yKP6GojgPUPc/Mpiiu9CiGsbhXkKnZdnFa4/uploadfile.jpg)
3
GATE EE 2003
MCQ (Single Correct Answer)
+2
-0.6
A chopper is employed to charge a battery as shown in figure. The charging current is $$5A$$. The duty ratio is $$0.2.$$ The chopper output voltage is also shown in figure. The peak to peak ripple current in the charging current is
![GATE EE 2003 Power Electronics - Choppers and Commutation Techniques Question 33 English](https://gateclass.cdn.examgoal.net/aSgCMJPZtVOr7YF8b/Sk8ChlVdac8fIVArUEKONa6Z68rSD/twchnPpbrenuv72fO2RnbW/uploadfile.jpg)
4
GATE EE 2002
MCQ (Single Correct Answer)
+2
-0.6
In the chopper circuit shown in fig the input $$dc$$ voltage has a constant value $${{V_s}}$$. the output voltage $${{V_0}}$$ is assumed ripple free. The switch $$S$$ is operated with a switching time period $$T$$ and a duty ratio $$D.$$ What is the value of $$D$$ at the boundary of continuous and discontinuous conduction of the inductor current $${i_L}$$?
![GATE EE 2002 Power Electronics - Choppers and Commutation Techniques Question 34 English](https://gateclass.static.cdn.examgoal.net/WsO2Hcl4lGXntFG3q/LUK2QRYsfSQFDxNYaDOi0gyefpLY8/Mba82lqPkAGKOvY4q6eJCy/uploadfile.jpg)
Questions Asked from Choppers and Commutation Techniques (Marks 2)
Number in Brackets after Paper Indicates No. of Questions
GATE EE 2024 (1)
GATE EE 2023 (1)
GATE EE 2022 (1)
GATE EE 2018 (2)
GATE EE 2017 Set 1 (1)
GATE EE 2017 Set 2 (1)
GATE EE 2015 Set 1 (3)
GATE EE 2015 Set 2 (1)
GATE EE 2014 Set 1 (1)
GATE EE 2013 (2)
GATE EE 2012 (1)
GATE EE 2011 (1)
GATE EE 2010 (2)
GATE EE 2009 (1)
GATE EE 2008 (1)
GATE EE 2007 (1)
GATE EE 2006 (3)
GATE EE 2005 (1)
GATE EE 2004 (2)
GATE EE 2003 (1)
GATE EE 2002 (1)
GATE EE 2000 (1)
GATE EE Subjects
Electromagnetic Fields
Signals and Systems
Engineering Mathematics
General Aptitude
Power Electronics
Power System Analysis
Analog Electronics
Control Systems
Digital Electronics
Electrical Machines
Electric Circuits