10+ Site Support Engineer Interview Questions and Answers

Electrical equipment deals with electricity, while electronics equipment deals with electronic signals and circuits.

• Electrical equipment uses electricity as a power source, while electronics equipment uses electronic signals.

• Electrical equipment includes items like power cables, transformers, and circuit breakers, while electronics equipment includes items like computers, smartphones, and televisions.

• Electrical equipment typically operates at higher voltages and currents, whi...read more

AC stands for Alternating Current. AC and DC are two types of electrical current with different characteristics.

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

• DC is a type of electrical current that flows in only one direction.

• AC is used for power transmission over long distances, while DC is used for electronic devices.

• AC voltage can be easily changed using a transformer, while DC voltage cannot be changed as easily.

• Examples of AC devices include hou...read more

The angle between three phase windings is 120 degrees.

• The angle between each phase in a three-phase system is 120 degrees.

• This is because 360 degrees divided by 3 phases equals 120 degrees.

• Understanding the phase angles is important for proper functioning of electrical systems.

The battery 1 cell voltage depends on the type of battery and its state of charge.

• The voltage of a single cell battery can range from 1.2V to 3.7V depending on the chemistry of the battery.

• The state of charge of the battery also affects the voltage.

• For example, a fully charged lithium-ion battery cell has a voltage of 4.2V while a discharged cell has a voltage of 3.0V.

• Similarly, a lead-acid battery cell has a voltage of 2.1V when fully charged and 1.8V when discharged.

DC stands for Direct Current and is a type of electrical current that flows in one direction. A battery is a device that stores chemical energy and converts it into electrical energy.

• DC is used in many electronic devices such as computers, televisions, and radios.

• Batteries come in many different types such as alkaline, lithium-ion, and lead-acid.

• Batteries are commonly used in portable devices such as cell phones, laptops, and cameras.

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

• AC motors: Induction motors, synchronous motors

• DC motors: Brushed DC motors, brushless DC motors

A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction.

• Consists of two coils of wire, known as primary and secondary windings

• Works on the principle of electromagnetic induction

• Used to step up or step down voltage levels in electrical circuits

• Commonly used in power distribution systems

• Examples include power transformers, distribution transformers, and instrument transformers

The battery voltage depends on the type of battery and its charge level.

• The voltage of a fully charged lead-acid battery is around 12.6 volts.

• The voltage of a lithium-ion battery can range from 3.6 to 4.2 volts per cell.

• The voltage of a discharged battery will be lower than that of a fully charged battery.

• Measuring the voltage of a battery can help determine its charge level and health.

The battery problem refers to issues related to the battery life, performance, and charging of electronic devices.

• Battery draining too quickly

• Battery not holding charge

• Device not charging properly

• Overheating during charging

• Battery swelling or leaking

The type of current refers to the flow of electric charge in a circuit.

• There are two main types of current: direct current (DC) and alternating current (AC).

• DC flows in one direction continuously, while AC changes direction periodically.

• Examples of DC sources include batteries, while examples of AC sources include power outlets.

• The type of current used depends on the application and requirements of the circuit.