Junior Engineer Apprentice Interview Questions and Answers

GPS and GSM are both technologies used for communication and tracking. GPS is used for location tracking while GSM is used for communication.

• GPS stands for Global Positioning System and uses satellites to determine the location of an object or person

• GSM stands for Global System for Mobile Communications and is a cellular network used for communication

• GPS is used for location tracking and navigation while GSM is used for communication purposes

• GPS is more accurate than GSM in t...read more

Transformer rating is in kVA instead of kW because it takes into account both the real power and the reactive power.

• kVA represents the apparent power of the transformer, which is the combination of real power (kW) and reactive power (kVAR).

• Reactive power is required to magnetize the transformer's core and establish the magnetic field.

• The real power (kW) is the power that is actually consumed or used by the load.

• The apparent power (kVA) determines the size of the transformer a...read more

An inductor is a passive electronic component that stores energy in a magnetic field, while a capacitor stores energy in an electric field.

• Inductor: stores energy in a magnetic field

• Capacitor: stores energy in an electric field

• Inductors resist changes in current flow

• Capacitors resist changes in voltage

• Inductors are used in filters, transformers, and energy storage systems

• Capacitors are used in timing circuits, power factor correction, and energy storage systems

RADAR is a technology that uses radio waves to detect and locate objects.

• RADAR stands for Radio Detection and Ranging.

• It is used in aviation, military, weather forecasting, and navigation.

• Advantages include long-range detection, all-weather capability, and high accuracy.

• Examples of RADAR systems include air traffic control, weather RADAR, and military surveillance RADAR.

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

• Consists of two or more coils of insulated wire wound around a core

• Primary coil receives electrical energy and induces a magnetic field in the core

• Secondary coil receives energy from the magnetic field and transfers it to the load

• Used to step up or step down voltage in power distribution systems

• Examples include power transformers in substations...read more