Rockline Construction Interview Questions and Answers

Various types of pumps are used in industries depending on the application and fluid characteristics.

• Centrifugal pumps

• Positive displacement pumps

• Diaphragm pumps

• Gear pumps

• Peristaltic pumps

• Axial flow pumps

• Multistage pumps

• Submersible pumps

• Vacuum pumps

Carnot cycle is a theoretical thermodynamic cycle that is used to determine the maximum efficiency of a heat engine.

• It consists of four reversible processes: isothermal expansion, adiabatic expansion, isothermal compression, and adiabatic compression.

• It operates between two heat reservoirs at different temperatures.

• The efficiency of a Carnot cycle is given by (T1-T2)/T1, where T1 is the temperature of the hot reservoir and T2 is the temperature of the cold reservoir.

• It is a u...read more

Least count is the smallest measurement that can be made by an instrument.

• It is the smallest value that can be measured by an instrument.

• It is determined by the precision of the instrument.

• For example, the least count of a ruler with millimeter markings is 1 mm.

• It is important to consider the least count when making measurements to ensure accuracy.

Vernier division is a precise measuring technique used to measure small distances with high accuracy.

• It involves using a sliding scale with a smaller scale marked on it to measure the distance between two points.

• The smaller scale has divisions that are slightly smaller than the divisions on the larger scale.

• By aligning the two scales, the user can determine the distance between the two points with high accuracy.

• Vernier division is commonly used in instruments such as calipers...read more

S.I and C.G.S units are two different systems of units used to measure physical quantities.

• S.I units are based on the metric system and are widely used in scientific and engineering applications.

• C.G.S units are based on the centimeter-gram-second system and are used in some specialized fields like electromagnetism.

• Examples of S.I units include meter, kilogram, second, ampere, kelvin, mole, and candela.

• Examples of C.G.S units include centimeter, gram, second, dyne, and erg.

• Con...read more

There are various types of welding techniques used in industries such as MIG, TIG, Stick, Flux-cored, and Submerged Arc Welding.

• MIG (Metal Inert Gas) Welding

• TIG (Tungsten Inert Gas) Welding

• Stick Welding

• Flux-cored Welding

• Submerged Arc Welding