Qatar Petroleum Hydraulic Technician Interview Questions and Answers for Experienced

There are two types of maintenance for induction motors: preventive and corrective.

• Preventive maintenance involves regular inspections, cleaning, lubrication, and replacement of worn parts to prevent breakdowns.

• Corrective maintenance involves repairing or replacing parts after a breakdown has occurred.

• Preventive maintenance is more cost-effective in the long run and helps to extend the life of the motor.

• Examples of pre...read more

Answering questions related to confined space job, alignment of pump and motor, types of gaskets and valves, and troubleshooting reciprocating compressor.

• Safety watch is responsible for monitoring the workers inside the confined space and ensuring their safety.

• Alignment of pump and motor can be done using dial indicators or laser alignment tools.

• Different types of gaskets include spiral wound, ring joint, and sheet gas...read more

The chiller refrigeration cycle is a process that removes heat from a space or substance using a refrigerant.

• The cycle starts with the compressor compressing the refrigerant gas.

• The compressed gas then flows through the condenser where it releases heat and becomes a liquid.

• The liquid refrigerant then flows through the expansion valve, where it expands and becomes a gas again, absorbing heat in the process.

• The gas then ...read more