Preview Questions Circuit Design Engineer | Role Specific Skill

Question 1: How does the presence of high-k dielectrics in MOSFETs affect device performance?

Which action should you take?

Choose only one option

It increases leakage current

It improves carrier mobility

It allows for thicker gate oxides without sacrificing capacitance

It reduces subthreshold swing

Question 2: What is the primary function of the isolation trench in advanced CMOS processes?

Which action should you take?

Choose only one option

To reduce power consumption

To reduce parasitic capacitance and improve device isolation

To enhance the performance of high-voltage transistors

To increase the gate capacitance

Question 3: What is the purpose of using impedance control in PCB design?

Which action should you take?

Choose only one option

To improve the strength of the signal by amplifying it

To ensure that the signal reaches the receiver with minimal distortion

To eliminate the need for ground planes

To reduce the need for power planes in high-speed circuits

Question 4: During system simulation of a communications system, which of the following parameters is typically analyzed to assess signal fidelity?

Which action should you take?

Choose only one option

Voltage gain

Signal-to-noise ratio (SNR)

Current efficiency

Signal reflection coefficient

Question 5: What is the purpose of using thermal vias in PCB design for power electronics?

Which action should you take?

Choose only one option

To ensure uniform distribution of power

To maintain the impedance of power traces

To reduce electromagnetic interference

To improve heat dissipation

Question 6: In a 2-to-1 multiplexer, what happens when both the selection line and the data inputs are held constant?

Which action should you take?

Choose only one option

The output will always be one

The output will be zero

The output will continuously change depending on clock cycles

The output will be equal to the data input selected