Lutron Electronics Interview Questions and Answers

A circuit breaker is an electrical switch designed to protect an electrical circuit from damage caused by excess current.

• Circuit breakers automatically interrupt the flow of electricity when a fault is detected.

• They are commonly used in homes to protect electrical circuits from overloads or short circuits.

• A real life example of a circuit breaker is the one found in a circuit panel in a house, which trips when too much current flows through the circuit.

Ohm's law states that the current flowing through a conductor is directly proportional to the voltage applied across it, with resistance as a constant factor.

• Ohm's law is expressed as V = IR, where V is voltage, I is current, and R is resistance.

• It can also be written as I = V/R or R = V/I.

• For example, if a circuit has a voltage of 12V and a resistance of 4 ohms, the current flowing through it would be 3A (12V/4ohms = 3A).

Ohm's law states that the current flowing through a conductor is directly proportional to the voltage across it, given a constant resistance.

• Ohm's law is represented by the formula V = IR, where V is voltage, I is current, and R is resistance.

• It is named after German physicist Georg Simon Ohm.

• It is commonly used in electrical engineering to calculate current, voltage, or resistance in a circuit.

• For example, if a circuit has a voltage of 12 volts and a resistance of 4 ohms, th...read more

A stress-strain diagram shows the relationship between stress (force applied) and strain (resulting deformation) in a material.

• The diagram typically starts with a linear elastic region where stress is directly proportional to strain.

• After the elastic limit, the material enters the plastic region where it deforms permanently.

• Finally, the material reaches its ultimate strength before failure occurs.

• Examples of stress-strain diagrams include brittle materials like ceramics havin...read more

Different ways to generate PWM from a processor

• Using hardware timers

• Using software timers

• Using dedicated PWM modules

• Using pulse-width modulation libraries

• Using direct register manipulation

Timers in microprocessors vary in features and implementation.

• Timers can be used for various purposes such as generating interrupts, measuring time intervals, and controlling PWM signals.

• Different microprocessors may have different types of timers such as basic timers, general-purpose timers, and advanced timers.

• The number of timers, their resolution, and clock source can also vary between microprocessors.

• Examples of microprocessors with different timer features include STM32...read more