PwC Interview Questions and Answers

Preventive maintenance is a proactive approach to maintenance that involves regularly scheduled inspections and repairs to prevent equipment failure.

• Create a maintenance schedule based on manufacturer recommendations and equipment usage

• Perform regular inspections to identify potential issues before they become major problems

• Replace worn or damaged parts before they fail

• Keep accurate records of maintenance activities

• Train employees on proper equipment use and maintenance proce...read more

Hole basis system is a type of fit system used in engineering to determine the tolerance between two mating parts.

• In this system, the size of the hole is kept constant and the size of the shaft is varied to achieve the desired fit.

• It is commonly used in applications where the hole is the more critical component, such as bearings or bushings.

• The fit is determined by the difference between the maximum shaft size and the minimum hole size.

• Examples of hole basis fits include H7/p...read more

The hole size for 16 mm tapping depends on the type of thread and material being tapped.

• The recommended hole size for a 16 mm tapping with a coarse thread in steel is 14.5 mm.

• For a fine thread in aluminum, the recommended hole size is 15.5 mm.

• It is important to consult a tap drill chart to determine the appropriate hole size for the specific tapping operation.

• Factors such as material type, thread type, and tap geometry can all affect the recommended hole size.

TPM stands for Total Productive Maintenance. Its purpose is to maximize equipment effectiveness and minimize downtime.

• TPM involves regular maintenance and inspection of equipment

• It aims to prevent breakdowns and improve overall equipment efficiency

• TPM also involves training and involving all employees in maintenance activities

• Examples of TPM tools include visual management, 5S, and autonomous maintenance

The recommended hole size for M8 tapping is 6.8mm.

• The hole size should be 1.25 times the major diameter of the tap.

• For M8 tapping, the major diameter is 8mm, so the hole size should be 6.8mm.

• The hole should be drilled to a depth of at least 1.5 times the diameter of the tap.

• Use a tap drill chart to determine the correct hole size for other tapping sizes.

DOL starter is a type of motor starter used to start and stop the motor directly on line.

• DOL stands for Direct-On-Line

• It is the simplest and most economical type of motor starter

• It consists of a contactor and an overload relay

• It is used for small to medium-sized motors

• Example: A DOL starter is used to start a water pump motor

Ohm's law states that the current through a conductor between two points is directly proportional to the voltage across the two points.

• Ohm's law is a fundamental law of electrical engineering

• It states that the current through a conductor is directly proportional to the voltage across it

• The proportionality constant is the resistance of the conductor

• Ohm's law is often used to calculate the current, voltage, or resistance in a circuit

• For example, if the voltage across a resistor...read more