APT POWER ENGINEERING Interview Questions and Answers

The basic IEC standards in PV module design & type qualification are IEC 61215 and IEC 61730 for design qualification, and IEC 61215 and IEC 61730 for type qualification. The safety qualification standard is IEC 61730.

• IEC 61215 is the standard for crystalline silicon terrestrial photovoltaic (PV) modules

• IEC 61730 is the standard for safety qualification of PV modules

• Design qualification ensures the module design meets ...read more

Solar backsheet layers provide protection and insulation for solar panels.

• Solar backsheet layers are typically made of a combination of materials such as polyester, fluoropolymer, and ethylene-vinyl acetate (EVA).

• The backsheet layers act as a barrier against moisture, UV radiation, and other environmental factors that can degrade the solar cells.

• They also provide electrical insulation to prevent short circuits and ensu...read more

Differential pressure transmitters measure pressure differences, while transducers convert physical quantities into signals.

• Differential pressure transmitters measure the difference in pressure between two points, often used in flow measurement.

• Transducers convert one form of energy into another, such as converting pressure into an electrical signal.

• Example of a differential pressure transmitter: Used in HVAC systems t...read more

A pressure gauge measures the pressure of gases or liquids in a system, providing critical data for monitoring and control.

• Uses a sensing element (like a diaphragm) that deforms under pressure.

• The deformation is converted into a readable value, often via a dial or digital display.

• Common types include analog gauges (with a needle) and digital gauges (with electronic sensors).

• Applications range from industrial machinery ...read more

The manufacturing process of the printing line involves various steps to produce printed materials efficiently.

• Designing the layout of the printing line

• Selecting the appropriate printing technology (e.g. offset, digital, flexography)

• Calibrating and setting up the printing equipment

• Testing the printing quality and making adjustments as needed

• Implementing quality control measures throughout the process