L&T Water & Effluent Treatment Mechanical Supervisor Interview Questions and Answers

A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction.

• Transformers are used to increase or decrease the voltage levels in electrical power transmission and distribution systems.

• They consist of two or more coils of wire, known as windings, which are wound around a core made of magnetic material.

• The primary winding is connected to the input v...read more

Current in a motor can be found using an ammeter.

• Connect the ammeter in series with the motor

• Turn on the motor and measure the current

• Current can be found using the formula I = V/R

• Use a clamp meter to measure current without breaking the circuit

Load calculation of Transformer

• Load calculation involves determining the amount of power required by the load

• Transformer rating should be higher than the calculated load

• Load calculation takes into account factors such as power factor, efficiency, and voltage regulation

• Formula for load calculation: Load (kVA) = Voltage (V) x Current (A) x Power Factor

• Example: If the load is 100 kW with a power factor of 0.8 and a voltag...read more

Standards for plant layout in refineries ensure safety, efficiency, and compliance with regulations.

• Plant layout should prioritize safety and minimize the risk of accidents.

• Efficiency is also important, with consideration given to the flow of materials and equipment.

• Regulations and industry standards must be followed, such as those set by OSHA and API.

• Examples of layout considerations include spacing between equipment,...read more

The frequency of visiting vendor shops for expediting depends on various factors such as project timelines, vendor reliability, and urgency of the situation.

• The frequency of visiting vendor shops for expediting can vary from daily visits to weekly or monthly visits.

• It depends on the project timelines and the urgency of the situation. If a project is running behind schedule, more frequent visits may be required to ensur...read more

DCU stands for Dublin City University, a university located in Dublin, Ireland.

• DCU was established in 1980 and has over 17,000 students.

• It offers a wide range of undergraduate and postgraduate courses in various fields such as business, engineering, science, arts, and humanities.

• DCU is known for its innovative approach to education and research, and has partnerships with many leading companies and institutions.

• Some not...read more

Delayed is called so because it refers to something that is postponed or occurs after the expected time.

• The term 'delayed' is used to describe situations where there is a time lag or postponement.

• It implies that something is not happening immediately or as scheduled.

• Delays can occur due to various reasons such as technical issues, logistical problems, or unforeseen circumstances.

• For example, a delayed flight refers to ...read more