Wave Infratech Engineer Interview Questions, Process, and Tips

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

• A circuit breaker automatically interrupts the flow of electricity when it detects an overload or short circuit.

• It can be reset manually after tripping to restore power to the circuit.

• Common types include thermal-magnetic, magnetic, and thermal circuit breakers.

• Examples include miniature circuit brea...read more

A star delta starter is a type of reduced voltage starter used to reduce the starting current of induction motors.

• Consists of a star contactor and a delta contactor

• Initially starts the motor in star configuration to reduce current

• Switches to delta configuration once motor reaches a certain speed

• Used for large induction motors to prevent high starting currents

• Commonly used in industries like manufacturing and mining

A vacuum circuit breaker is an electrical switch that uses a vacuum to extinguish the arc when the circuit is broken.

• Uses a vacuum to extinguish the arc

• Commonly used in medium voltage applications

• Compact and reliable design

• Does not require any maintenance

Transformers are electrical devices that transfer electrical energy between two or more circuits through electromagnetic induction.

• Transformers consist of two coils of wire, known as the primary and secondary coils.

• They work on the principle of electromagnetic induction, where a changing current in the primary coil induces a voltage in the secondary coil.

• Transformers are used to step up or step down voltage levels in e...read more

Diesel generators are backup power sources that use diesel fuel to generate electricity during power outages.

• Diesel generators are commonly used in industrial settings, hospitals, data centers, and residential homes.

• They are reliable and efficient sources of backup power.

• Diesel generators require regular maintenance and fuel supply to ensure proper functioning.

• Examples of diesel generator brands include Caterpillar, Cu

Untreatable power supply refers to a power source that cannot be fixed or repaired.

• Untreatable power supply may be caused by irreparable damage to the power source components.

• It may also refer to a power source that is obsolete and no longer supported by manufacturers.

• In some cases, the cost of repairing the power supply may be higher than replacing it with a new one.