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

AM (Amplitude Modulation)

Answer

FM (Frequency Modulation)

Answer

CDMA (Code Division Multiple Access)

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

Amplify AC signals

Answer

Filter ripple voltage

Answer

Regulate line frequency

Question 3

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

Accepted Answer

Number of gate inputs a single output can drive

Answer

Number of inputs to a logic gate

Answer

Propagation delay through a gate

Answer

Power consumption per gate

Question 4

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

Accepted Answer

Sinusoidal Pulse-Width Modulation (SPWM)

Answer

Square wave modulation

Answer

Step-wave modulation

Answer

Phase-angle control

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

Signal strength of wireless devices

Answer

Power consumption compliance

Answer

Temperature limits of components

Question 6

In digital signal processing, what is the z-transform primarily used for?

Accepted Answer

Analyzing discrete-time systems in the frequency domain

Answer

Converting analog signals to digital

Answer

Compressing audio data

Answer

Performing fast Fourier transforms