Preview Questions Hardware Engineer | Role Specific Skill

Question 1: How can the quality factor (Q) of an LC circuit be increased?

Which action should you take?

Choose only one option

Reducing resistance in the circuit

Reducing the frequency

Using a lower inductance

Increasing capacitance value

Question 2: How can ground loops be mitigated during system integration?

Which action should you take?

Choose only one option

Add ferrite beads

Increase signal frequency

Use isolated power supplies and proper grounding

Decrease system voltage

Question 3: In constructing a prototype for a complex power distribution network, which method best ensures that sensitive digital and analog subsystems won't be affected by noise coupling?

Which action should you take?

Choose only one option

Place all decoupling capacitors at a single central point

Rely on a single-point fuse for all power lines

Separate ground planes and use careful stitching for returns

Use a single regulator for all rails

Question 4: How would you test the functionality of an analog signal in a prototype?

Which action should you take?

Choose only one option

By using a digital logic analyzer

By using a multimeter to measure resistance

By testing the signal against the power supply

By using an oscilloscope to view the waveform

Question 5: In the first prototype of a sensitive analog front-end circuit, how can you best ensure that low-level signals are not corrupted by ground loops during initial bench tests?

Which action should you take?

Choose only one option

Rely on the oscilloscope's internal grounding only

Use a switching regulator to feed analog stages

Connect all grounds together at any convenient point

Use a single-point star ground reference and isolated instrumentation

Question 6: When implementing a CORDIC (Coordinate Rotation Digital Computer) engine in hardware for trigonometric functions, what is the primary advantage over traditional multiplier-based designs?

Which action should you take?

Choose only one option

It requires large multipliers and large ROM tables

It can only approximate low-frequency signals

It doubles resource usage compared to LUT-based methods

It uses iterative shift-add operations and avoids multipliers