Electrical Engg (EEE) - MCQ Practice Questions

Which topology is preferred for high-power renewable energy inverters (>100kW) in 2024-25 grid applications?

In a synchronous buck converter, if the duty cycle is 0.7 and the switching frequency is 500kHz, what is the approximate inductor ripple current (ΔIL) with input voltage 48V and output voltage 24V?

A diode-clamped five-level inverter reduces the voltage stress on individual switches compared to a two-level inverter by a factor of:

A single-phase AC voltage controller with a resistive load has a firing angle of 45°. What is the RMS output voltage as a fraction of input RMS voltage?

A resonant DC-link inverter operates at 200kHz. The resonant frequency must be:

In isolated DC-DC converters for EV fast-charging stations, which topology provides the best isolation and efficiency above 1kW?