Interview Questions and Answers

Passive components do not require a power source to operate, while active components require a power source.

• Passive components include resistors, capacitors, inductors, and transformers.

• Active components include transistors, diodes, and integrated circuits.

• Passive components do not amplify or control electrical signals, while active components do.

• Passive components are typically used to attenuate or filter signals, while active components are used for signal processing and am...read more

Logic gates are electronic devices that perform logical operations on one or more binary inputs to produce a single binary output.

• Logic gates are the building blocks of digital circuits.

• They can perform operations such as AND, OR, NOT, NAND, NOR, XOR, and XNOR.

• Each gate has a specific truth table that defines its behavior.

• For example, an AND gate outputs 1 only when both inputs are 1.

• Logic gates are used in computers, calculators, and other digital devices.

To check current with a DMM, set the DMM to the current measurement mode, connect the DMM in series with the circuit, and read the current value displayed on the DMM.

• Set the DMM to the current measurement mode

• Connect the DMM in series with the circuit

• Read the current value displayed on the DMM

A multimeter is a versatile tool used to measure voltage, current, and resistance in electrical circuits.

• Set the multimeter to the appropriate function (voltage, current, or resistance)

• Connect the probes to the circuit being tested

• Read the measurement displayed on the multimeter screen

• Ensure proper safety precautions are taken when working with live circuits

• For example, to measure voltage, set the multimeter to the voltage function, connect the probes to the circuit, and read...read more

A latch is a mechanical device used to secure a door or gate.

• A latch typically consists of a bar or bolt that is engaged or disengaged by lifting or turning a knob or lever.

• Common types of latches include barrel bolts, spring latches, and deadbolts.

• Latches are commonly used on doors, gates, windows, cabinets, and other types of enclosures.

• Proper installation and maintenance of latches are important for security and safety purposes.

A transistor is a semiconductor device used to amplify or switch electronic signals and electrical power.

• Transistors are fundamental building blocks of modern electronic devices.

• They can amplify signals, regulate currents, and act as switches.

• Common types include bipolar junction transistors (BJTs) and field-effect transistors (FETs).

I have handled a variety of materials including metals, plastics, ceramics, and composites.

• Metals

• Plastics

• Ceramics

• Composites

Test cases for login page

• Verify if the login page is displayed correctly

• Test if the username and password fields are present

• Check if the login button is enabled only when both fields are filled

• Validate if the user is able to login with valid credentials

• Test if the user receives an error message for invalid credentials

• Verify if the user is redirected to the correct page after successful login