Tata Steel Quality Assurance Interview Questions, Process, and Tips

Q1. Define the voltage and current
Ans. 
Voltage is the measure of electrical potential difference, while current is the flow of electric charge.
• Voltage is measured in volts (V) and represents the potential difference between two points in a circuit

• Current is measured in amperes (A) and represents the flow of electric charge through a circuit

• Ohm's Law relates voltage, current, and resistance: V = I * R

• Voltage sources include batteries, power supplies, and gen...read more
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Q2. Define the analog and digital signal
Ans. 
Analog signals are continuous, varying in amplitude and frequency. Digital signals are discrete, represented by binary numbers.
• Analog signals have infinite possible values within a range

• Digital signals have only two possible values, 0 and 1

• Examples of analog signals include sound waves and light waves

• Examples of digital signals include computer data and CDs
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Q3. Define the electrical and electronics
Ans. 
Electrical engineering deals with the study and application of electricity, electronics focuses on the study of electronic components and systems.
• Electrical engineering involves the generation, distribution, and utilization of electrical power.

• Electronics focuses on the design and development of electronic circuits, devices, and systems.

• Examples of electrical engineering include power generation plants, transmission li...read more
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Q4. Define the diode and semiconductor devices
Ans. 
A diode is a semiconductor device that allows current to flow in one direction only.
• Diodes are made of semiconductor materials such as silicon or germanium.

• They have two terminals - an anode and a cathode.

• When a positive voltage is applied to the anode and a negative voltage to the cathode, the diode conducts electricity.

• Diodes are commonly used in rectifiers, voltage regulators, and signal demodulation.

• Examples of dio...read more
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Q5. Define the ohm’s law formula
Ans. 
Ohm's law formula relates voltage, current, and resistance in an electrical circuit.
• Ohm's law formula is V = I * R

• V represents voltage in volts

• I represents current in amperes

• R represents resistance in ohms

• The formula can be rearranged to solve for different variables, such as I = V / R or R = V / I
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