10+ Hardware Engineer Interview Questions and Answers for Freshers

The number of ways to arrange sets of coloured balls in a line.

• The number of ways to arrange the red balls is the factorial of the number of red balls.

• The number of ways to arrange the blue balls is the factorial of the number of blue balls.

• The number of ways to arrange the green balls is the factorial of the number of green balls.

• To find the total number of arrangements, multiply the number of arrangements for each set.

Overlap-add method of convolution is implemented by dividing the input signal into overlapping segments and convolving each segment with a filter.

• Divide the input signal into overlapping segments

• Apply the filter to each segment

• Add the convolved segments together to get the output signal

• The length of each segment should be greater than or equal to the length of the filter

• The overlap between adjacent segments should be greater than or equal to the length of the filter minus one

The bit-rate for quantization of a band-limited signal can be obtained by considering the Nyquist-Shannon sampling theorem.

• The Nyquist-Shannon sampling theorem states that in order to accurately represent a band-limited signal, the sampling rate must be at least twice the highest frequency component of the signal.

• The bit-rate for quantization is determined by the number of bits used to represent each sample. It is typically calculated as the product of the sampling rate and t...read more

The in-phase and quadrature components of a real pass-band signal can be obtained using a complex mixer.

• A complex mixer is used to convert the real pass-band signal to a complex baseband signal.

• The in-phase component is obtained by multiplying the pass-band signal with a local oscillator signal in-phase with the carrier frequency.

• The quadrature component is obtained by multiplying the pass-band signal with a local oscillator signal 90 degrees out of phase with the carrier fre...read more

Nyquist sampling frequency for unevenly distributed band-limited signal.

• Determine the highest frequency component in the signal

• Use Nyquist theorem to calculate the minimum sampling frequency

• Sampling frequency should be at least twice the highest frequency component

The Nyquist criterion states that in order to accurately sample a signal, the sampling rate must be at least twice the highest frequency component of the signal.

• The Nyquist criterion is used in digital signal processing and communication systems.

• It ensures that the original signal can be accurately reconstructed from its samples.

• The sampling rate should be at least twice the bandwidth of the signal to avoid aliasing.

• For example, if a signal has a maximum frequency of 10 kHz, ...read more

Overlap-add is implemented by dividing the input signal into overlapping segments, applying a window function, and adding the segments together.

• Overlap-add is a method used in digital signal processing to efficiently convolve long signals with finite impulse response (FIR) filters.

• The input signal is divided into overlapping segments, typically with a length equal to the filter length.

• A window function, such as the Hamming window, is applied to each segment to reduce spectral...read more

Yes, I have hardware knowledge.

• I have a strong understanding of computer hardware components such as CPUs, GPUs, RAM, and motherboards.

• I am familiar with hardware design principles and have experience in designing and prototyping electronic circuits.

• I have knowledge of various hardware interfaces and protocols like USB, HDMI, PCIe, and I2C.

• I am proficient in using hardware testing and debugging tools like oscilloscopes, multimeters, and logic analyzers.

• I have worked on hardwa...read more

The number of components in a desktop can vary depending on the specific model and configuration.

• Components can include the CPU, GPU, RAM, motherboard, storage devices, power supply, cooling system, and peripherals.

• Examples of components in a desktop: Intel Core i7 processor, NVIDIA GeForce RTX 3080 graphics card, 16GB DDR4 RAM, ASUS ROG Strix Z590-E motherboard, 1TB SSD, 750W power supply, liquid cooling system, keyboard, mouse, monitor.

The work in desktop involves designing, testing, and troubleshooting computer hardware components.

• Designing and developing computer hardware components such as motherboards, processors, and memory modules

• Testing hardware components to ensure they meet performance and quality standards

• Troubleshooting hardware issues and providing solutions to improve performance

• Collaborating with software engineers to ensure hardware compatibility and optimization