1
GATE EE 2006
MCQ (Single Correct Answer)
+2
-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 9 English

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

A
$$280$$
B
$$140$$
C
$$70$$
D
$$0$$
2
GATE EE 2006
MCQ (Single Correct Answer)
+2
-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

The average output voltage of the chopper will be

A
$$70$$ $$V$$
B
$$47.5$$
C
$$35$$ $$V$$
D
$$0$$
3
GATE EE 2006
MCQ (Single Correct Answer)
+2
-0.6
A voltage commutation circuit is shown in figure. If the turn off time of the $$SCR$$$$s$$ is $$50$$ $$\mu \sec $$ and as safety margin of $$2$$ is considered, what will be the approximate minimum value of capacitor required for proper commutation? GATE EE 2006 Power Electronics - Choppers and Commutation Techniques Question 4 English
A
$$2.88\,\,\mu \,F\,$$
B
$$1.44\,\,\mu \,F\,$$
C
$$0.91\,\,\mu \,F\,$$
D
$$0.72\,\,\mu \,F\,$$
4
GATE EE 2005
MCQ (Single Correct Answer)
+2
-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 26 English
A
$$10$$ $$A$$
B
$$0.5$$ $$A$$
C
$$0.125$$ $$A$$
D
$$0.25$$ $$A$$
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