10+ Engineer 1 Interview Questions and Answers for Freshers

Optical fiber is important for communication due to its high bandwidth, low attenuation, and immunity to electromagnetic interference.

• High bandwidth allows for faster data transmission over long distances

• Low attenuation ensures signals can travel far without losing strength

• Immunity to electromagnetic interference results in clearer communication

• Used in telecommunications, internet connectivity, cable television, and more

Fiber is a material made of long, thin strands of glass or plastic that transmit data through light signals.

• Fiber optics use total internal reflection to transmit data through light signals

• Fiber cables are made of glass or plastic fibers that are bundled together

• Fiber is used in telecommunications, internet connections, and medical imaging

• Fiber can transmit data over long distances with minimal signal loss

Protection of power transformer involves implementing measures to prevent damage or failure of the transformer due to various factors.

• Protection relays are used to detect abnormal conditions and isolate the transformer from the system.

• Overcurrent protection is used to prevent damage from excessive current flow.

• Differential protection compares the current entering and leaving the transformer to detect internal faults.

• Temperature monitoring helps prevent overheating of the tran...read more

The 3 types of fibre are soluble fibre, insoluble fibre, and resistant starch.

• Soluble fibre dissolves in water and helps lower cholesterol and regulate blood sugar levels (e.g. oats, beans, fruits)

• Insoluble fibre does not dissolve in water and promotes healthy digestion by adding bulk to the stool (e.g. whole grains, vegetables)

• Resistant starch resists digestion in the small intestine and acts as a prebiotic, feeding beneficial gut bacteria (e.g. green bananas, legumes)

Fiber is a connection that uses optical fibers to transmit data through light signals.

• Fiber optics use thin strands of glass or plastic to transmit data as pulses of light.

• Fiber connections are known for their high speed and reliability.

• Examples of fiber connections include Fiber to the Home (FTTH) and Fiber to the Premises (FTTP).

Relays are devices that act as switches to control electrical circuits. They come in various types with different functions.

• Electromechanical relays: use electromagnets to mechanically operate the switch

• Solid-state relays: use semiconductor devices to switch the circuit on and off

• Time delay relays: introduce a time delay before switching the circuit

• Overload relays: protect electrical circuits from overloads by disconnecting power

• Latching relays: maintain their state even afte...read more

Maintenance ensures equipment, machinery, or systems are kept in good working condition to prevent breakdowns and ensure optimal performance.

• Prevent breakdowns and extend equipment lifespan

• Ensure optimal performance and efficiency

• Reduce safety risks and downtime

• Save costs in the long run by avoiding major repairs or replacements

A solar inverter is a device that converts the DC electricity generated by solar panels into AC electricity for use in homes and businesses.

• Converts DC electricity from solar panels to AC electricity

• Allows for use of solar energy in homes and businesses

• Helps manage and optimize solar power production

• Examples: SMA Solar Inverters, Enphase Microinverters

Transformer testing includes routine tests, type tests, and special tests to ensure proper functioning and safety.

• Routine tests: include insulation resistance, turns ratio, winding resistance, and polarity tests.

• Type tests: include temperature rise, short-circuit withstand, impulse voltage, and dielectric tests.

• Special tests: include noise level, partial discharge, and harmonics tests.

• Testing is crucial to ensure transformers meet performance standards and safety regulations.