Online TestChoppers Objective Questions – 2 Choppers Objective Questions Power Electronics Objective Questions & Answers 0% In the below given circuit, when switch (SW) is on voltage is zero and current is rising voltage is non-zero and current is rising voltage is zero and current is decaying voltage is non-zero and current is decaying Correct!Wrong!- Continue >> Find the expression for output voltage for a step-up chopper, assume linear variation of load current and α as the duty cycle. Vs Vs/α Vs/√2 Vs/(1-α) Correct!Wrong!- Continue >> In the below given circuit, when switch (SW) is on voltage and current both are non-zero voltage and current both are zero voltage is non-zero and current is rising voltage is zero and current is decaying Correct!Wrong!- Continue >> The below given figure is that of a _________ (IGBT is used as a chopper switch) none of the mentioned step-up/step-down chopper step-down chopper step-up chopper Correct!Wrong!- Continue >> In the below given circuit, when switch (SW) is first switched closed and then opened the voltage is zero and current is decaying voltage is non-zero and current is rising voltage is zero and current is rising voltage is non-zero and current is decaying Correct!Wrong!- Continue >> In the below given circuit, when switch (SW) is off voltage is non-zero and current is decaying voltage is non-zero and current is rising voltage is zero and current is rising voltage is zero and current is decaying Correct!Wrong!- Continue >> In a step down chopper, if Vs = 100 V and the chopper is operated at a duty cycle of 75 %. Find the output voltage. 100 V None of the Mentioned 25 V 75 V Correct!Wrong!- Continue >> What is the voltage across the load when the SW is first closed and then opened? duty cycle x Vs Vs + L (di/dt) Vs zero Correct!Wrong!- Continue >> Find the output voltage for a step-up chopper when it is operated at a duty cycle of 50 % and Vs = 240 V. 560 V 240 V 120 V 480 V Correct!Wrong!- Continue >> If Vo is the output voltage and Vs is the input DC voltage, then for the below given circuit. Vo = Vs Vo > Vs Vo < Vs Insufficient information Correct!Wrong!- Continue >> Share the quiz to show your results ! Facebook Facebook Just tell us who you are to view your results ! Show my results >> Choppers-2 I got %%score%% of %%total%% right ↺ PLAY AGAIN ! Share With Your Friends Facebook Twitter LinkedIn Pinterest Email WhatsApp
