10+ Diksha Technologies Interview Questions and Answers

Yes, water flows inside the pipe for the required tonnage of AC.

• Water flows inside the pipe to carry the heat away from the indoor unit to the outdoor unit.

• The amount of water flow required depends on the tonnage of the AC and the design of the system.

• The water flow rate is typically measured in gallons per minute (GPM) or liters per minute (LPM).

The air velocity at cooling coil depends on the design and specifications of the HVAC system.

• Air velocity at cooling coil is typically between 300-500 feet per minute.

• The velocity can be adjusted based on the cooling load and desired temperature.

• Higher air velocity can improve heat transfer but may also increase noise levels.

• The velocity should be measured and adjusted during commissioning to ensure optimal performance.

Site checking of steel and concreting work involves verifying materials, dimensions, and quality to ensure compliance with specifications.

• Verify steel reinforcement bars for correct size, spacing, and alignment.

• Check concrete mix design and slump test results for concreting work.

• Inspect formwork for proper installation and alignment.

• Ensure proper curing methods are being followed for concrete.

• Use testing equipment like rebar locators and concrete test hammers for quality cont...read more

Inspect the steel for quality and compliance with specifications before accepting it at the site.

• Check the quality of the steel for any defects or damage.

• Verify that the steel meets the required specifications and standards.

• Ensure proper documentation and labeling of the steel materials.

• Coordinate with suppliers or manufacturers for any discrepancies or issues.

• Reject any steel that does not meet the quality or specifications.

• Store the accepted steel materials in a designated ...read more

ACH (Air Changes per Hour) is used in various fields to measure the amount of air exchanged in a space per hour.

• ACH is commonly used in HVAC design to determine the appropriate ventilation rate for a space.

• In hospitals, ACH is used to control the spread of airborne infections.

• ASHRAE recommends a minimum of 6 ACH for operating rooms and 12 ACH for isolation rooms.

• In cleanrooms, ACH is used to maintain a controlled environment with low levels of particulate matter.

• ACH can also ...read more

Frequency of testing varies depending on the item being tested, with some items requiring more frequent testing than others.

• Frequency of testing should be determined based on risk assessment and regulatory requirements.

• Critical items may require daily or weekly testing, while less critical items may only need testing on a monthly or quarterly basis.

• Examples of items that may require frequent testing include critical equipment, raw materials, and finished products.

• Regular cali...read more

Tile fixing involves preparing the surface, applying adhesive, placing tiles, grouting, and finishing.

• Prepare the surface by ensuring it is clean, dry, and level.

• Apply adhesive evenly on the surface using a trowel.

• Place tiles carefully, ensuring proper alignment and spacing.

• Grout the tiles by filling the gaps between them with grout.

• Finish by cleaning off excess grout and sealing the tiles if necessary.

Repair of concrete work involves identifying the damage, preparing the surface, applying a suitable repair material, and curing the repair properly.

• Identify the type and extent of damage to the concrete

• Prepare the damaged area by removing loose debris and cleaning the surface

• Select a suitable repair material based on the type of damage (e.g. cracks, spalling, delamination)

• Apply the repair material according to manufacturer's instructions

• Properly cure the repair to ensure stre...read more