Cheema Boilers Mechanical Engineer Interview Questions and Answers

I am a highly experienced Senior Engineer with a strong background in software development and project management.

• Over 10 years of experience in software development

• Proficient in multiple programming languages such as Java, C++, and Python

• Led successful projects from conception to completion, ensuring on-time delivery and high-quality results

• Strong problem-solving and analytical skills

• Excellent communication and leader...read more

A resistor is an electronic component that resists the flow of electrical current.

• Resistors are used to control the amount of current flowing in a circuit.

• They are measured in ohms (Ω) and have color-coded bands to indicate their resistance value.

• Resistors dissipate energy in the form of heat when current flows through them.

• Common types of resistors include carbon film, metal film, and wirewound resistors.

A transistor is a semiconductor device used to amplify or switch electronic signals.

• Transistors are fundamental building blocks of modern electronic devices.

• They can amplify electrical signals, control the flow of current, and act as switches.

• Common types of transistors include bipolar junction transistors (BJTs) and field-effect transistors (FETs).

Refrigeration cycle is a thermodynamic cycle used in refrigerators and air conditioning systems to transfer heat from a low temperature reservoir to a high temperature reservoir.

• Consists of four main components: compressor, condenser, expansion valve, and evaporator

• Refrigerant is compressed in the compressor, then condensed in the condenser, expanded in the expansion valve, and evaporated in the evaporator

• Heat is absor...read more

Refrigeration theory involves the transfer of heat from a low temperature region to a high temperature region using a refrigerant.

• Refrigeration is based on the principles of thermodynamics, specifically the second law which states that heat naturally flows from a higher temperature to a lower temperature.

• The refrigeration cycle consists of four main components: compressor, condenser, expansion valve, and evaporator.

• The...read more

The process of erection of duct involves planning, fabrication, transportation, installation, and testing.

• Planning involves determining the layout, size, and material of the ducts.

• Fabrication includes cutting, bending, and assembling the ducts according to the design.

• Transportation is the movement of fabricated ducts to the installation site.

• Installation involves positioning and connecting the ducts to the HVAC system.

• ...read more

The code followed for the fabrication of steel structure materials is typically based on industry standards and regulations.

• The fabrication of steel structures is typically governed by codes such as the American Institute of Steel Construction (AISC) Code of Standard Practice.

• Other codes that may be followed include the American Welding Society (AWS) D1.1 Structural Welding Code - Steel.

• Fabrication processes must also ...read more

The erection sequence of a steel structure involves planning and executing the assembly of components in a specific order to ensure safety and stability.

• Start by assembling the foundation and anchor bolts.

• Next, erect the columns and connect them to the foundation.

• Then, install the beams and trusses to form the framework.

• After that, add the bracing and diagonal members for stability.

• Finally, complete the structure by ad...read more