Deputy Engineer Interview Questions and Answers for Freshers

MTTR stands for Mean Time To Repair. Predictive maintenance planning involves analyzing data to identify potential equipment failures.

• MTTR is the average time it takes to repair a failed piece of equipment.

• To plan predictive maintenance, data is collected and analyzed to identify patterns and potential failures.

• This data can include equipment usage, environmental factors, and historical maintenance records.

• Based on this analysis, maintenance schedules can be adjusted to preve...read more

The most commonly used refrigerant at this time is R-410A, which is a hydrofluorocarbon (HFC) blend.

• R-410A is a popular choice due to its high energy efficiency and environmental friendliness.

• It is commonly used in air conditioning systems and heat pumps.

• R-410A is a hydrofluorocarbon (HFC) blend, which means it does not contain chlorine and is less harmful to the ozone layer compared to older refrigerants like R-22.

Stainless steel is a type of steel alloy with a minimum of 10.5% chromium content, which gives it its corrosion-resistant properties.

• Stainless steel contains at least 10.5% chromium, which forms a protective oxide layer on the surface.

• Other common elements in stainless steel include nickel, molybdenum, and carbon.

• Different grades of stainless steel have varying compositions for specific applications.

• Examples of stainless steel grades are 304, 316, and 430.

The least count of a vernier caliper is 0.02 mm and the least count of a screw gauge is 0.01 mm.

• Vernier caliper least count: 0.02 mm

• Screw gauge least count: 0.01 mm

Preventive maintenance plan includes Why Why Why analysis to identify root cause of problems and prevent future occurrences.

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

• Why Why Why analysis is a technique used to identify the root cause of a problem by asking 'why' multiple times until the underlying cause is revealed.

• By incorporating Why Why Why analysi...read more

Optimized code for finding pairs in an array that sum up to a given value

• Use a hash table to store the difference between the target value and each element in the array

• Iterate through the array and check if the current element is in the hash table

• If it is, then a pair with the target sum has been found

• Time complexity can be reduced to O(n) using this approach

Merge sort algorithm can be modified to sort an array of strings in descending order.

• Modify the comparison function to sort in descending order

• Use the standard merge sort algorithm

• Ensure that the merge function is also modified to merge in descending order