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Electrical Engg (EEE) - MCQ Practice Questions

Practice free Electrical Engg (EEE) multiple-choice questions with detailed answers and explanations. Perfect for competitive exam preparation.

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Q.21Medium

The reverse recovery time of a diode is critical in power electronics because it:

Q.22Medium

Which of the following devices can block voltage in both forward and reverse directions?

Q.23Medium

In a flyback converter, the energy transfer occurs during:

Q.24Easy

The maximum frequency of a thyristor is typically limited by:

Q.25Medium

In a three-phase bridge inverter with 120° conduction mode, each switch conducts for:

Q.26Hard

The dv/dt rating of a power semiconductor is important because it:

Q.27Easy

A PWM inverter with sinusoidal modulation produces output voltage with:

Q.28Medium

In an induction motor fed by a variable frequency drive (VFD), the V/f ratio is maintained constant to:

Q.29Medium

The parasitic capacitance in a power MOSFET causes:

Q.30Medium

A series RLC filter connected at the output of an inverter serves to:

Q.31Hard

In a three-level diode-clamped inverter (Neutral Point Clamped), the advantage over two-level inverter is:

Q.32Medium

The snubber capacitor in a power converter acts to:

Q.33Hard

Which control strategy for a DC-DC converter provides the tightest output voltage regulation under varying input voltage and load conditions?

Q.34Hard

In a synchronous buck converter, the advantages of using a low-side MOSFET instead of a diode are:

Q.35Medium

The phenomenon of commutation in a thyristor-based rectifier circuit refers to:

Q.36Easy

The presence of freewheeling diode in a DC motor drive is essential because it:

Q.37Medium

In a multilevel inverter topology, the total harmonic distortion (THD) compared to a two-level inverter is:

Q.38Medium

The thermal resistance (Rtheta-JA) of a power semiconductor determines:

Q.39Medium

In a current-source inverter (CSI), the DC link contains:

Q.40Easy

In a boost converter operating in continuous conduction mode (CCM), if the duty cycle is 0.5 and input voltage is 12V, what is the output voltage?