Engineers Adda

MCQ (i) An increase in steam pressure of a boiler during start-up from 4 bar (g) to 12 bar (g), will result in decrease of ____. (a) enthalpy of steam (b) sensible heat of steam (c) specific volume of steam* (d) saturation temperature of steam.

MCQ (i) Following part is not included in Boiler accessories ____. (a) ESP                                                             (b) Economiser (c) Chimney*                                                   (d) Air pre-heater

A wide variety of mining processing and materials-handling equipment is used in underground and surface mining, and in preparation/pro-cessing plants with many noise sources on them having a range of varying noise levels. Frequently, a single piece of equipment will combine several individual noise sources.

A steam table gives the properties of water (liquid, vapor, and mixture) at different temperatures and pressures. Common properties listed:   T = Temperature   P = Pressure (absolute, not gauge)   v = Specific volume (m³/kg)   u = Internal energy (kJ/kg)   h = Enthalpy (kJ/kg)   s = Entropy (kJ/kg·K)   x = Quality (mass fraction of vapour, 0 = sat liquid, 1 = sat vapour)

Explosive is a solid or liquid substance or a mixture of substances which on application of a suitable stimulus is converted in a very short time interval into other more stable substances, largely or entirely gaseous, with the development of heat and high pressure. 

This system is simple in construction and maintenance. It can suit any gradient and curvature of roadways. Even gravity can assist it to the extent that in hilly terrain it could be installed. This type of arrangement, when installed in an incline, it is known as self-acting-incline.

Mechanical conveyors are used for transporting most bulk solids (sand, ash, grains etc.) handling. They are used not only in transportation of bulk solids from one location to another location but also for feeding, discharging, metering and proportioning such materials to and from bulk solids storage silos and other solids handling and processing equipments. Conveyor is a device which is used for continuous transportation.