Question

Buck converter is used to _________

(a) Step down the voltage

(b) Step up the voltage

(c) Equalize the voltage

(d) Step up and step down the voltage

I have been asked this question in class test.

I want to ask this question from Dynamics in section Dynamics of Electrical Drives of Electric Drives

Answer 1

Right answer is (a) Step down the voltage

The explanation: The output voltage of the buck converter is Vo = D×Vin. The value of the duty cycle is less than one which makes the Vo < Vin. The buck converter is used to step down voltage. Vin is a fixed voltage and Vo is a variable voltage.