10+ Tactful Systems Interview Questions and Answers

A circuit breaker is a device that automatically interrupts the flow of electric current in a circuit to protect against short circuits.

• Circuit breakers are designed to prevent damage to electrical equipment and wiring caused by excessive current.

• They work by detecting abnormal current flow and quickly opening the circuit to stop the flow of electricity.

• This helps to prevent overheating, fires, and other hazards that can result from short circuits.

• Circuit breakers can be rese...read more

Transformers are electrical devices that transfer energy from one circuit to another through electromagnetic induction.

• Transformers work by changing the voltage and current levels of an alternating current (AC) power supply.

• They consist of two coils of wire, called the primary and secondary windings, wrapped around a magnetic core.

• When an AC voltage is applied to the primary winding, it creates a magnetic field that induces a voltage in the secondary winding.

• This voltage can ...read more

A motor is a machine that converts electrical energy into mechanical energy.

• Motors are used in various applications such as fans, pumps, and vehicles.

• There are two types of motors: AC motors and DC motors.

• AC motors are commonly used in household appliances while DC motors are used in electric vehicles.

• Motors work by using the interaction between a magnetic field and an electric current to produce motion.

• The speed of a motor can be controlled by adjusting the amount of current...read more

Solar energy is the energy obtained from the sun's radiation and converted into usable energy.

• Solar energy is renewable and sustainable.

• It is harnessed through the use of solar panels, which convert sunlight into electricity.

• Solar energy can be used for a variety of purposes, including powering homes and businesses, heating water, and even powering cars.

• It is a clean source of energy, producing no greenhouse gas emissions or air pollution.

• Solar energy is becoming increasingly...read more

The electric frequency in India is 50hz.

• Electricity in India operates at a frequency of 50hz.

• This is the same frequency used in most countries in Asia and Europe.

• The frequency is important for the proper functioning of electrical appliances.

A relay is an electrically operated switch that uses an electromagnet to mechanically open or close a circuit.

• Relays are commonly used in electrical systems to control high voltage or high current circuits with low voltage signals.

• They can be used for a variety of applications such as controlling lights, motors, and solenoids.

• Relays come in different types such as electromagnetic, solid-state, and reed relays.

• They are often used in automotive, industrial, and home automation ...read more

AC and DC currents are two types of electrical currents with different characteristics.

• AC (Alternating Current) is a type of electrical current that periodically changes direction.

• DC (Direct Current) is a type of electrical current that flows in only one direction.

• AC is commonly used in household electrical systems, while DC is used in batteries and electronic devices.

• AC current is generated by power plants and transmitted through power lines.

• DC current is produced by sources...read more

A control system is a system that manages, commands, directs, or regulates the behavior of other devices or systems.

• Control systems are used in various fields such as engineering, manufacturing, and automation.

• They can be either open-loop or closed-loop systems.

• Open-loop systems do not have feedback, while closed-loop systems use feedback to adjust their output.

• Examples of control systems include thermostats, cruise control in cars, and autopilot systems in airplanes.

Current can be measured using an ammeter.

• An ammeter is connected in series with the circuit to measure current.

• The ammeter should have a suitable range for the expected current.

• The circuit should be turned off before connecting the ammeter.

• The ammeter should be connected in the correct orientation.

• The reading on the ammeter should be recorded and interpreted correctly.

AC electric current is a type of electrical current that periodically reverses direction.

• AC stands for Alternating Current

• It is commonly used in household appliances and power grids

• The voltage and frequency of AC current can vary depending on the application

• Examples of AC current include the power supply in your home and the electricity used to power electric motors