MS Master of Electrical Engineering 3

Question 1

Which modulation technique is used in 5G NR (New Radio) for its efficient use of spectrum?

Accepted Answer

OFDM (Orthogonal Frequency-Division Multiplexing)

Answer

5G NR uses OFDM because it efficiently handles multipath fading, supports high data rates, and allows flexible spectrum allocation.

Question 2

What is the purpose of a flyback converter in switch-mode power supplies?

Accepted Answer

Provide electrical isolation while converting DC voltage levels

Answer

A flyback converter uses a transformer to provide galvanic isolation between input and output while stepping DC voltage up or down.

Question 3

In VLSI design, what does the term 'fanout' refer to?

Accepted Answer

Number of gate inputs a single output can drive

Answer

Fanout is the number of logic gate inputs that a single output can drive while maintaining valid logic levels and timing.

Question 4

Which control strategy minimizes harmonic distortion in a grid-connected inverter?

Accepted Answer

Sinusoidal Pulse-Width Modulation (SPWM)

Answer

SPWM compares a sinusoidal reference with a high-frequency triangular carrier to produce switching pulses that minimize low-order harmonics.

Question 5

What is electromagnetic compatibility (EMC) testing primarily designed to verify?

Accepted Answer

That a device neither emits nor is susceptible to excessive electromagnetic interference

Answer

EMC testing verifies that electronic equipment does not emit electromagnetic interference beyond regulatory limits and can function correctly in the presence of interference.

MS - Master of Science Practice Test

MS - Master of Science Practice Test

MS Master of Electrical Engineering 3