Sraco Senior Mechanical Technician Interview Questions and Answers

Fire NOC conditions refer to the requirements set by the fire department for ensuring fire safety in a building or establishment.

• Fire NOC is required before starting any construction or occupancy of a building.

• The building must comply with fire safety regulations such as having fire extinguishers, smoke detectors, and fire alarms installed.

• Regular fire drills and training for occupants are necessary to ensure preparedn...read more

25 KV AC is more efficient for railways due to lower energy losses over long distances.

• 25 KV AC is more efficient for long distance transmission as it experiences lower energy losses compared to 750V DC.

• 25 KV AC allows for higher speeds and heavier loads on the railway system.

• 25 KV AC is the standard voltage used in many modern railway systems around the world, such as in Europe and parts of Asia.

• 750V DC may be more su...read more

Reverse a string without using string or inbuilt function

• Create an array of characters to store the string

• Use two pointers, one at the beginning and one at the end, swap characters until they meet

• Repeat until all characters are swapped

SFD stands for Shear Force Diagram and BMD stands for Bending Moment Diagram in structural analysis.

• SFD shows the variation of shear force along the length of a beam or structure.

• BMD shows the variation of bending moment along the length of a beam or structure.

• Both diagrams are essential for analyzing the internal forces in a structure.

• They are commonly used in civil and mechanical engineering for designing and analyzi...read more

Thrust forces for beams can be calculated using equations of equilibrium and considering external loads.

• Calculate the sum of all external forces acting on the beam.

• Determine the direction of the forces (compression or tension) based on the beam's support conditions.

• Apply equations of equilibrium to calculate the thrust forces at different points along the beam.

• Consider any distributed loads or moments that may affect t...read more

Alignment methods are techniques used to ensure proper positioning and orientation of mechanical components.

• Common alignment methods include laser alignment, dial indicator alignment, and straight edge alignment.

• Laser alignment uses a laser beam to measure and adjust the alignment of components.

• Dial indicator alignment uses a dial gauge to measure the alignment of components.

• Straight edge alignment involves using a str...read more

Columns are vertical structures used for support while vessels are horizontal structures used for storage or transportation of fluids.

• Columns are used for structural support while vessels are used for storage or transportation of fluids.

• Columns are usually vertical while vessels are usually horizontal.

• Columns are commonly found in buildings and bridges while vessels are commonly found in chemical plants and refineries.

• ...read more

Exchanger is a device used to transfer heat from one fluid to another.

• Exchangers can be of various types such as shell and tube, plate, or spiral

• They work on the principle of heat transfer through conduction

• The hot fluid flows through the exchanger and transfers its heat to the cold fluid

• The two fluids are kept separate by a barrier to prevent mixing

• Exchangers are commonly used in HVAC systems, chemical plants, and ref

There are various types of permits required for mechanical work depending on the nature of the work.

• There are hot work permits for welding and cutting operations.

• Confined space permits for work in enclosed spaces.

• Lockout/tagout permits for maintenance work on machinery.

• Excavation permits for digging and trenching work.

• Electrical permits for electrical work.

• Permits for working at heights.

• Permits for hazardous materials ...read more

If a person is injured inside a confined space, I would follow a set of steps to ensure their safety and provide immediate medical attention if necessary.

• Assess the situation and ensure personal safety before entering the confined space.

• Call for help and inform the relevant authorities about the incident.

• Provide first aid or CPR if trained and necessary.

• If the injury is severe or life-threatening, evacuate the injured ...read more

I will follow the emergency procedures and evacuate the area immediately.

• I will stop all ongoing work and shut down any equipment that can be safely shut down.

• I will follow the emergency evacuation plan and exit the area as quickly as possible.

• I will report to the designated assembly point and wait for further instructions.

• If necessary, I will assist in the evacuation of others who may need help.

• I will not return to th...read more

Necessary documents for a permit include risk assessment, work method statement, and safety procedures.

• Risk assessment

• Work method statement

• Safety procedures