Mechanical Maintenance and Utility Engineer

Mechanical Maintenance and Utility Engineer Interview Questions and Answers

Updated 8 Nov 2022

Q1. What is types of cooling tower?

Ans.

Cooling towers are of two types: Natural draft and Mechanical draft.

Natural draft cooling towers use the natural air flow to cool the water.
Mechanical draft cooling towers use fans to force air through the tower.
Mechanical draft towers are further classified as forced draft and induced draft towers.
Forced draft towers have fans at the bottom that force air into the tower.
Induced draft towers have fans at the top that pull air through the tower.
Examples of cooling towers inclu...read more

Ans.

1 inch is equal to 25.4 millimeters.

1 inch = 25.4 mm
This conversion is commonly used in engineering and manufacturing industries.
It is important to know this conversion when working with both metric and imperial units.

Mechanical Maintenance and Utility Engineer Interview Questions and Answers for Freshers

Ans.

There are two types of bearings: plain bearings and rolling bearings.

Plain bearings: sliding bearings, journal bearings, sleeve bearings, and bushings.
Rolling bearings: ball bearings, roller bearings, needle bearings, and tapered roller bearings.
Bearings are used to reduce friction between two moving parts.
Proper lubrication is essential for the longevity of bearings.

Ans.

The main type of gear is the spur gear.

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Ans.

A heat exchanger is a device that transfers heat from one fluid to another without the fluids mixing.

Heat exchangers are used in various industries such as HVAC, chemical, and power generation.
They can be classified into different types such as shell and tube, plate and frame, and finned tube.
Heat exchangers work on the principle of conduction, convection, and radiation.
Examples of heat exchangers include radiators in cars, air conditioning systems, and boilers.
Heat exchanger...read more

Ans.

A bearing is a machine element that constrains relative motion to only the desired motion and reduces friction between moving parts.

Bearings are used to support rotating shafts and reduce friction between the shaft and its housing.
They come in various types such as ball bearings, roller bearings, and plain bearings.
Bearings are essential components in machines such as engines, turbines, and pumps.
They can also be found in everyday items such as bicycles, skateboards, and ceil...read more

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Ans.

A valve is a device that regulates, directs or controls the flow of a fluid by opening, closing, or partially obstructing various passageways.

There are different types of valves such as gate valve, ball valve, globe valve, butterfly valve, etc.
Valves can be classified based on their function, design, and application.
Valves are commonly used in industries such as oil and gas, water treatment, chemical processing, and power generation.

Ans.

Alignment refers to the process of ensuring that two or more components are properly positioned and oriented relative to each other.

Alignment is important in mechanical systems to ensure smooth operation and prevent damage or wear.
Common methods of alignment include using laser alignment tools, dial indicators, and shims.
Examples of components that require alignment include shafts, couplings, and bearings.
Proper alignment can improve efficiency, reduce maintenance costs, and ...read more