Explore topic-wise InterviewSolutions in .

Right option is (c) 2.14%

EASY explanation: Varying the amount of carbon and many other alloying ELEMENTS, as well as CONTROLLING their chemical and PHYSICAL makeup in the final steel (either as solute elements, or as precipitated phases), slows the MOVEMENT of those dislocations that make pure iron ductile, and thus controls and enhances its qualities.

The CORRECT choice is (a) True

Easiest EXPLANATION: Fungi attack timber when these conditions are all present:

-The timber MOISTURE content is above 25% on a dry-weight basis

-The environment is sufficiently warm

-Oxygen (O2) is present.

Correct option is (c) slurry

Explanation: A slurry is a thin sloppy mud or CEMENT or, in extended use, any fluid MIXTURE of a pulverized SOLID with a liquid (usually water), often used as a convenient way of handling solids in bulk. Slurries behave in some WAYS like thick FLUIDS, flowing under gravity and are also capable of being pumped if not too thick.

The correct option is (a) True

The EXPLANATION is: Earthwork CONSTRUCTION was revolutionized by the development of the (Fresno) scraper and other earth-moving machines such as the loader, the DUMP truck, the grader, the bulldozer, the BACKHOE, and the dragline EXCAVATOR.

The correct option is (c) annealing

Explanation: Annealing is the process of heating the STEEL to a sufficiently high temperature to relieve local internal stresses. It does not create a general softening of the product but only locally relieves STRAINS and stresses locked up within the material. Annealing goes through three phases: recovery, recrystallization, and GRAIN growth. The temperature required to anneal a particular steel depends on the type of annealing to be achieved and the alloying CONSTITUENTS.

The correct answer is (C) shed roof

For EXPLANATION: A mono-pitched roof, often referred to as a pent roof, shed roof, lean-to roof, and/or skillion roof, is a single-sloped roof surface, often not ATTACHED to another roof surface. This is in CONTRAST to a dual-pitched roof, also known as a gabled roof, which is pitched in two different DIRECTIONS.

Right answer is (c) Timber

To elaborate: There are two main types of lumber. It may be SUPPLIED either rough-sawn, or surfaced on one or more of its faces. Besides pulpwood, rough lumber is the raw material for furniture-making and other items requiring additional cutting and shaping. It is available in MANY species, usually hardwoods; but it is ALSO readily available in softwoods, such as WHITE PINE and red pine, because of their low cost.

The CORRECT OPTION is (a) False

Explanation: As a tree grows, lower branches often DIE, and their bases may become overgrown and ENCLOSED by subsequent layers of TRUNK wood, forming a type of imperfection known as a knot.

Right choice is (d) Heartwood

Easiest explanation: Heartwood formation is a genetically programmed process that occurs spontaneously. Some UNCERTAINTY exists as to WHETHER the wood dies during heartwood formation, as it can still chemically react to decay organisms, but only once.

Heartwood is often visually DISTINCT from the living SAPWOOD, and can be distinguished in a cross-section where the boundary will tend to follow the growth rings. For example, it is sometimes much darker.

The correct answer is (b) False

Explanation: Reinforcement is OFTEN included in concrete. Concrete can be formulated with high compressive strength, but ALWAYS has lower tensile strength. For this reason it is usually reinforced with materials that are strong in TENSION, typically steel REBAR.

Correct choice is (b) bacteria

The BEST explanation: Water disinfection MEANS the REMOVAL, DEACTIVATION or killing of pathogenic microorganisms. Microorganisms are destroyed or deactivated, resulting in TERMINATION of growth and reproduction. When microorganisms are not removed from drinking water, drinking water usage will cause people to fall ill.

Correct answer is (d) entire arrangement from source to distribution.

To explain: A water supply system typically includes:

A drainage basin.

A raw water collection point (above or below ground) where the water accumulates, such as a lake, a river, or groundwater from an underground aquifer. Raw water may be transferred using uncovered ground-level aqueducts, covered tunnels or underground water pipes to water purification facilities.

Water purification facilities. Treated water is transferred using water pipes (USUALLY underground).

Water storage facilities such as reservoirs, water tanks, or water towers. Smaller water systems may store the water in cisterns or pressure vessels. Tall buildings may also need to store water locally in pressure vessels in order for the water to reach the upper floors.

Additional water pressurizing components such as pumping stations may need to be situated at the outlet of underground or above ground reservoirs or cisterns (if gravity flow is impractical).

A pipe NETWORK for distribution of water to the consumers (which may be private houses or industrial, commercial or institution establishments) and other usage points (such as fire hydrants).

Connections to the sewers (underground pipes, or aboveground ditches in some developing COUNTRIES) are GENERALLY found downstream of the water consumers, but the sewer system is considered to be a separate system, rather than part of the water supply system.

Correct answer is (a) AMNSARD roof

For explanation I would say: The four-sided slopes are not the characteristic feature of only Mansard roofs; the Pyramid roofs ALSO come with this feature. As the name suggests, these roofs are SHAPED like pyramids, a roof with four sloping sides. These roofs are best-suited for smaller STRUCTURES, like a farmhouse hut. These roofs are popular in the contemporary architecture, with many structures getting these roofs.The walls of these houses are symmetrical and easy to build. A lower degree pitch works best for such four-sided roofs. They would work even better if the walls were smaller and the roof MADE for a significant part of the house. It is not only aesthetically pleasing, but also more energy efficient.

Right answer is (d) impedance LIMITING

Explanation: Some supplies use CURRENT limiting instead of cutting off POWER if overloaded. The two types of current limiting used are ELECTRONIC limiting and impedance limiting. The former is common on lab bench PSUs, the latter is common on supplies of less than 3 watts output. A foldback current limiter reduces the output current to much less than the MAXIMUM non-fault current.

Correct CHOICE is (a) True

Best explanation: Iron is extracted from iron ore by removing the oxygen through its combination with a PREFERRED chemical partner such as CARBON which is then lost to the atmosphere as carbon dioxide. This process, known as SMELTING, was FIRST applied to metals with lower melting points, such as tin, which melts at about 250 °C (482 °F), and copper, which melts at about 1,100 °C (2,010 °F), and the combination, bronze, which has a melting point lower than 1,083 °C (1,981 °F).

The CORRECT choice is (a) Paint

For explanation: STEEL is made when iron is combined with carbon and other elements like-

• Water

• FLUX (Limestone and DOLOMITE)

• Refractories

• Silica or Sand

• Water

• Ferro alloys.

Correct choice is (a) True

The best explanation: The reinforcement is usually, though not necessarily, steel reinforcing bars (rebar) and is usually embedded passively in the concrete before the concrete sets. Reinforcing schemes are generally designed to resist tensile stresses in PARTICULAR REGIONS of the concrete that might cause unacceptable cracking and/or structural failure. Modern REINFORCED concrete can contain varied reinforcing materials made of steel, polymers or ALTERNATE COMPOSITE material in conjunction with rebar or not.

Correct answer is (d) WINDERS

Best explanation: Winders are steps that are narrower on ONE side than the other. They are used to CHANGE the direction of the stairs without landings. A series of winders form a CIRCULAR or spiral STAIRWAY. When three steps are used to turn a 90° corner, the middle step is called a kite winder as a kite-shaped quadrilateral.

Correct choice is (d) hacking

For EXPLANATION: Hacking is done on the finished wall before application of plaster of PARIS or tiles. It is the process of roughening the wall surface so that plaster can rest on it otherwise it would get shear off due to plane surface of the wall. Generally it is adopted for RENOVATION purpose (applying POP). Earlier mason prepare it with cement plaster and later on if owner wants to renovate wall of their house with tiles or POP they use this process CALLED hacking. There are lot of methods to do it but generally, it is been done by chisel.

Correct choice is (b) spalling reinforcement

To EXPLAIN: The spalling stresses LEADS to stress behind the loaded area of the anchor blocks. This results in the BREAKING off of the surface concrete. The most likely causes of such types of stresses are Poisson`s effects strain interoperability or by the stress trajectory shapes.

Correct option is (d) stainless steel

To ELABORATE: Stainless steels are notable for their corrosion RESISTANCE, which increases with increasing chromium CONTENT. Molybdenum additions INCREASE corrosion resistance in reducing acids and against pitting attack in chloride solutions. Thus, there are numerous grades of stainless steel with varying chromium and molybdenum contents to suit the environment the ALLOY must endure.

Right answer is (a) True

Easy EXPLANATION: Pulverized Coal Injection (PCI) is a PROCESS that involves blowing large volumes of fine coal granules into the BF. This PROVIDES a supplemental carbon source to speed up the production of metallic iron, reducing the need for coke production. As a result, energy use and EMISSIONS can be reduced.

The CORRECT answer is (a) rupture of tissues

The explanation is: Rupture of tissue includes cracks or splits in the wood called “shakes”. “Ring shake”, “wind shake”, or “ring failure” is when the wood grain separates around the growth rings either while standing or during felling. Shakes MAY reduce the strength of a timber and the appearance thus reduce lumber grade and may capture moisture, promoting decay. Eastern HEMLOCK is known for having ring shake. A “CHECK” is a CRACK on the surface of the wood caused by the outside of a timber shrinking as it seasons.

The correct choice is (C) Fixer masons

Explanation: Sometimes MODERN cements, mastics and epoxy resins are used, usually on specialist applications such as stone CLADDING. METAL fixings, from simple dowels and cramps to specialised single application fixings, are also used. The PRECISE tolerances necessary make this a highly skilled job.

Right choice is (a) lower point

Easiest explanation: The drain valve is subject to SEVERE erosion due to the COMBINED effect of drain DISCHARGE under high differential pressure at plant STARTUP and the spouting of oxidized scale INSIDE the piping.

Although drain valve have a short operating life due to their severe usage conditions, we offer a selection of drain valve with enhanced erosion resistance in an effort to increase their operating life.

Correct answer is (a) stability

Easy explanation: The MAIN purpose of the foundation is to DISTRIBUTE the load of the superstructure to the sub-bearing strata and depth of foundation is below the GROUND level to prevent the external FORCE like wind load and hence to stabilized the structure.

The correct answer is (a) True

Easiest explanation: In a blast furnace fuel (COKE), ores, and flux (limestone) are continuously supplied through the top of the furnace, while a hot blast of air (sometimes with oxygen ENRICHMENT) is blown into the lower section of the furnace through a series of pipes CALLED tuyeres, so that the chemical reactions TAKE place throughout the furnace as the material falls downward. The end products are usually molten METAL and slag phases tapped from the bottom, and flue gases exiting from the top of the furnace.

The correct option is (d) Anvil

The EXPLANATION is: The primary work surface of the anvil is KNOWN as the face. It is generally made of hardened steel and should be flat and smooth with rounded edges for most work. Any marks on the face will be transferred to the work. Also, sharp edges tend to cut into the metal being worked and may cause cracks to form in the workpiece. The face is hardened and tempered to resist the blows of the smith’s hammer, so the anvil face does not deform under repeated use. A hard anvil face also REDUCES the amount of force LOST in each hammer blow. Hammers, tools, and work pieces of hardened steel should never directly strike the anvil face with FULL force, as they may damage it; this can result in chipping or deforming of the anvil face.

Correct option is (a) True

Explanation: However, the quality of building stone varies greatly, both in its ENDURANCE to weathering, resistance to water penetration and in its ABILITY to be worked into regular shapes before construction. Worked stone is USUALLY known as ashlar, and is OFTEN USED for corners in stone buildings.

The correct choice is (b) DOUBLE basket weave bond

For explanation I would say: The herringbone pattern made by placing soldiers next to stretchers or vice versa (i.e. headers perpendicular) making ‘L’ shapes, nesting each L in the same order of laying. Thin bricks are more common. The pattern is usually rotated by 45° to create a completely VERTICAL (plumb) succession of ‘V’ shapes. It follows either the LEFT or right brick forms the tip of the v in any WALL. Herringbone is sometimes used as infill in timber FRAMED buildings.

The correct option is (a) True

For explanation: ‘Stainless’ is a term coined early in the development of these steels for cutlery APPLICATIONS. It was adopted as a generic name for these steels and now covers a wide range of steel types and grades for corrosion or OXIDATION resistant applications.

Stainless steels are iron alloys with a minimum of 10.5% chromium. Other alloying elements are added to enhance their structure and properties such as FORMABILITY, STRENGTH and cryogenic TOUGHNESS.

Right option is (a) Ironwork

For explanation: There are two main types of ironwork: WROUGHT iron and cast iron. While the use of iron dates as far back as 4000BC, it was the Hittites who first knew how to extract it and develop weapons. Use of iron was MAINLY utilitarian until the Middle Ages, it became widely USED for decoration in the PERIOD between the 16th and 19th century.

The CORRECT choice is (d) Rosewood

The best explanation: All rosewoods are strong and heavy, taking an excellent polish, being suitable for guitars (the fretboards on electric and acoustic guitars OFTEN being made of rosewood), marimbas, recorders, TURNERY (billiard cues, fountain pens, black pieces in chess sets, etc.), handles, FURNITURE, and LUXURY flooring, etc. Rosewood oil, used in perfume, is extracted from the wood of Aniba rosaeodora, which is not related to the rosewoods used for lumber.

Right answer is (a) True

To explain I would say: Maintaining composite action requires transfer of load between the concrete and STEEL. The direct stress is transferred from the concrete to the bar interface so as to change the tensile stress in the reinforcing bar along its length, this load transfer is achieved by means of BOND (ANCHORAGE) and is idealized as a CONTINUOUS stress field that develops in the vicinity of the steel-concrete interface.

The correct choice is (c) chisels

Easiest explanation: Chisels come in a variety of SIZES and SHAPES, dependent upon the function for which they are being used and have many different names depending on locality. There are different chisels for different materials and sizes of material being worked, for removing large amounts of material and for PUTTING a FINE finish on the stone.

Right option is (a) Flat roof

Explanation: Modern materials which are highly impermeable to water make possible the very LARGE low-pitch roofs found on large commercial BUILDINGS. ALTHOUGH called flat they are generally gently PITCHED.

Right answer is (a) Suspended solids

To explain I would say: The definition of Turbidity is the cloudiness or haziness of a FLUID caused by suspended solids that are USUALLY invisible to the naked eye. The measurement of Turbidity is an important test when trying to determine the quality of water. It is an aggregate optical property of the water and does not identify INDIVIDUAL SUBSTANCES; it just says SOMETHING is there.

Correct choice is (d) High RAW Material Cost, Overcapacity, Price Volatility

The best explanation: It is a rate at which the price of a security increases or decreases for a given set of returns. Volatility is measured by calculating the standard deviation of the annualized returns over a given period of TIME. It shows the range to which the price of a security may INCREASE or DECREASE.

Right CHOICE is (a) True

Easy explanation: They function as beams to PROVIDE support over large spans, such as removed support walls and garage door openings, places where dimensional lumber is insufficient, and also in areas where a heavy LOAD is BEARING from a floor, WALL or roof above on a somewhat short span where dimensional lumber is impractical.

Correct option is (a) True

Best explanation: TIMBER framing and “post-and-beam” construction are traditional methods of building with HEAVY timbers, creating structures using squared-off and carefully fitted and joined timbers with joints secured by large WOODEN pegs. It is commonplace in wooden buildings from the 19th century and earlier. If the structural frame of load-bearing timber is LEFT exposed on the exterior of the building it MAY be referred to as half-timbered, and in many cases the infill between timbers will be used for decorative effect.

The correct answer is (a) False

The EXPLANATION is: Green CARPENTRY is the specialization in the USE of environmentally FRIENDLY, energy-efficient and sustainable sources of building materials for use in construction projects. They ALSO practice building methods that require using less material and material that has the same structural soundness.