Senior Assistant Engineer Interview Questions and Answers for Freshers

Feedback in amplifiers is a process of returning a portion of the output signal back to the input.

• Feedback helps to improve the performance of amplifiers by reducing distortion and increasing stability.

• There are two types of feedback: positive and negative.

• Positive feedback increases the gain of the amplifier, while negative feedback decreases the gain.

• Negative feedback is commonly used in amplifiers to improve linearity and reduce distortion.

• Positive feedback is used in osci...read more

Embedded systems are standalone devices with fixed functionality, while IoT devices are connected to the internet and can be remotely controlled.

• Embedded systems are designed for specific tasks and have limited processing power and memory.

• IoT devices are connected to the internet and can be controlled remotely through a network.

• Embedded systems are often used in industrial and automotive applications, while IoT devices are used in smart homes, wearables, and other consumer ap...read more

FIR filters have finite impulse response while IIR filters have infinite impulse response.

• FIR filters have a linear phase response while IIR filters do not necessarily have a linear phase response.

• FIR filters are always stable while IIR filters may not be stable depending on the coefficients used.

• FIR filters have a fixed number of coefficients while IIR filters have a variable number of coefficients.

• Examples of FIR filters include moving average filters and low-pass filters w...read more

Amplifier increases the amplitude of a signal while oscillator generates a periodic signal.

• Amplifier is used to increase the strength of a signal without changing its frequency.

• Oscillator generates a periodic signal with a specific frequency.

• Amplifiers are used in audio systems, power amplifiers, and RF amplifiers.

• Oscillators are used in radio transmitters, clocks, and electronic musical instruments.