Online TestChoppers Objective Questions – 1 Choppers Objective Questions Power Electronics Objective Questions & Answers 0% A chopper is a DC transformer High speed semiconductor switch Time ratio controller AC to DC converter Correct!Wrong!- Continue >> If T is the time period for a chopper circuit and α is its duty cycle, then the chopping frequency is α/Ton Ton/α α/Toff Toff/α Correct!Wrong!- Continue >> Choppers converter DC to DC AC to DC DC to AC AC to AC Correct!Wrong!- Continue >> In the ___________ type of chopper, two stage conversions takes place. DC link None of the mentioned AC-DC AC link Correct!Wrong!- Continue >> What is the duty cycle of a chopper ? Ton/Toff Ton/T Toff x Ton T/Ton Correct!Wrong!- Continue >> A chopper may be thought as a Inverter with DC input Diode rectifier DC equivalent of an induction motor DC equivalent of an AC transformer Correct!Wrong!- Continue >> Which device can be used in a chopper circuit? BJT All of the mentioned GTO MOSFET Correct!Wrong!- Continue >> The load voltage of a chopper can be controlled by varying the duty cycle firing angle reactor position extinction angle Correct!Wrong!- Continue >> Find the output voltage expression for a step down chopper with Vs as the input voltage and α as the duty cycle. Vo = Vs2/α Vo = Vs/α Vo = 2Vs/απ Vo = Vs x α Correct!Wrong!- Continue >> The values of duty cycle (α) lies between 0<α<1 1<α<100 0>α>-1 0<=α<=1 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-1 I got %%score%% of %%total%% right Share your results Facebook Facebook Twitter Google+ ↺ PLAY AGAIN ! Share With Your Friends Facebook Twitter LinkedIn Pinterest Email WhatsApp
