Description : The depth of excavation of foundations, is generally measured with a (A) Ranging rod (B) Steel tape (C) Levelling staff (D) Boning rod
Last Answer : Answer: Option D
Description : A steel alloy containing 36% nickel is called __________, which has a zero co-efficient of expansion. (A) Austenitic stainless steel (B) Heat resisting steel (C) Invar (D) High speed steel
Last Answer : (C) Invar
Description : Which of the following statements is incorrect? (A) Error due to refraction may not be completely eliminated by reciprocal levelling (B) Tilting levels are commonly used for precision work (C) The last reading of levelling is always a foresight (D) All of the above statements are incorrect
Last Answer : (D) All of the above statements are incorrect
Description : In a plate type heat exchanger, heat transfer plates are never made of (A) Stainless steel (B) Cast iron (C) Titanium (D) Hastelloy C
Last Answer : (B) Cast iron
Description : Which of the following has the highest density and the lowest melting point? (A) Stainless steel (B) Titanium (C) Lead (D) Aluminium
Last Answer : (C) Lead
Description : Which of the following commonly used condenser tube materials has the lowest thermal conductivity? (A) Admiralty brass (B) Stainless steel (C) Aluminium brass (D) Titanium
Last Answer : (B) Stainless steel
Description : Liquid nitrogen containers can be made from (A) Ferritic stainless steel (B) HSLA steel (C) Titanium (D) Austenitic stainless steel
Last Answer : Option B
Description : Which of the following is the most suitable material of construction for the condenser tubes, where the cooling medium is brine (salty water)? (A) Aluminium (B) Copper (C) Titanium (D) Stainless steel
Last Answer : Option C
Description : Number of subdivisions per metre length of a levelling staff is (A) 100 (B) 200 (C) 500 (D) 1000
Last Answer : (B) 200
Description : The 10 mm markings on a levelling staff placed at 20 m are separated by (A) 1/1000 radian (B) 1/1500 radian (C) 1/2000 radian (D) 1/2500 radian
Last Answer : (C) 1/2000 radian
Description : While viewing through a level telescope and moving the eye slightly, a relative movement occurs between the image of the levelling staff and the cross hairs. The instrument is (A) Correctly focussed (B) Not correctly focussed (C) Said to have parallax (D) Free from parallax
Last Answer : (C) Said to have parallax
Description : During levelling if back sight is more than foresight (A) The forward staff is at lower point (B) The back staff is at lower point (C) The difference in level, cannot be ascertained (D) None of these
Last Answer : (B) The back staff is at lower point
Description : Pick up the correct statement from the following: (A) An observation or the resulting reading with the level on a levelling staff is called sight (B) A back sight is the first sight taken after setting up ... position (C) The first sight on each change point is a fore sight (D) All the above
Last Answer : (D) All the above
Description : In levelling operation (A) When the instrument is being shifted, the staff must not be moved (B) When the staff is being carried forward, the instrument must remain stationary (C) Both (a) and (b) (D) Neither (a) nor (b)
Last Answer : (C) Both (a) and (b)
Description : In case of levelling, backsight is (a) A fixed point of known elevation (b) The last staff reading taken before shifting the instrument (c) The first staff reading taken after setting the instrument (d) Any staff reading taken on a point of unknown elevation
Last Answer : (c) The first staff reading taken after setting the instrument
Description : Pick out the wrong statement. (A) Weldability of high carbon steel is poorer compared to low carbon steel (B) Invar is a magnetic alloy (C) Magnetic permeability of the diamagnetic material is less than one (D) Martenistic transformation never goes to completion (i.e., 100%) at room temperature
Description : Short offsets are measured with (A) An ordinary chain (B) An invar tape (C) A metallic tape (D) A steel tape
Last Answer : (A) An ordinary chain
Description : The steel generally used in R.C.C. work, is (A) Stainless (B) Mild steel (C) High carbon steel (D) High tension steel
Last Answer : Answer: Option B
Description : Stainless steel resists corrosion due to (A) Carbon (B) Sulphur (C) Vanadium (D) Chromium
Description : The steel used in R.C.C. work is (A) Stainless steel (B) Mild steel (C) High carbon steel (D) Wrought iron
Description : What property of invar steel is used in making pendulums and measuring tapes?
Last Answer : Invar steel has the least co-efficient of linear expansion.
Description : A metallic tape is made of (a) Steel (b) Invar (c) Linen (d) Cloth & wires*
Last Answer : (d) Cloth & wires
Description : Identify the alloy containing a non-metal as a constituent in it. (1) Bronze (2) Invar (3) Steel
Last Answer : Steel
Description : The commonly used base for iron and steel work, is (A) Red lead (B) Zinc white (C) White lead (D) Titanium white
Last Answer : Answer: Option A
Description : Invar contains (A) 12% of nickel (B) 24% of nickel (C) 30% to nickel (D) 36% of nickel
Description : A suitable material of construction to use with fuming sulphuric acid is (A) Carbon steel (B) Stainless steel type 304 (C) Nickel (D) Monel
Last Answer : (D) Monel
Description : Why You Shouldn’t Weld Carbon Steel and Stainless Steel Wire Together?
Last Answer : Reasons You Want to Avoid Welding Stainless Steel to Carbon Steel1.Difficulty: Combining dissimilar metals together, such as welding stainless steel to carbon steel, adds extra challenges to ... aren’t perfect.3.Thermal Expansion in High Temperature Service Conditions: Another problem with usi
Description : Stainless steel contains which of the following? (a) Aluminium and Zinc (b) Chromium and Carbon (c) Zinc and Mercury (d) Copper and Cadmium
Last Answer : Ans:(b)
Description : The important metal used with iron to produce stainless steel is – (1) Al (2) Chromium (3) Tin (4) Carbon
Last Answer : (2) Chromium Explanation: Stainless steel is an alloy of iron with chromium. Chromium prevents its from corrosion. Stainless steel differs from carbon steel by the amount of chromium present.
Description : _____ gives hardness to stainless steel. (1) Zinc (2) Lead (3) Carbon (4) Tin
Last Answer : (3) Carbon Explanation: Iron is alloyed with carbon to make steel and has the effect of increasing the hardness and strength of iron.
Description : ______ gives hardness to stainless steel. (1) Zinc (2) Lead (3) Carbon (4) Tin
Last Answer : (3) Carbon Explanation: Iron is alloyed with carbon lo make steel and has the effect of increasing the hardness and strength of iron. Pure iron cannot be hardened or strengthened by heat treatment but ... .3% carbon. The higher the carbon content, the less formable and the tougher the steel becomes.
Description : Which one of the following contains maximum percentage of carbon? (1) Cast iron (2) Stainless steel (3) Wrought iron (4) High speed steel
Last Answer : (1) Cast iron Explanation: Cast Iron is a hard, brittle, nonmalleable iron-carbon alloy, cast into shape, containing 2 to 4.5 percent carbon. Steels contain less than 2% and usually less than 1% carbon, ... percent carbon. Wrought iron is an iron alloy with very low carbon (0.04 to 0.08%) content.
Description : Stainless steel is an alloy of - (1) chromium and carbon (2) chromium, carbon and iron (3) chromium and iron (4) carbon and iron
Last Answer : (2) chromium, carbon and iron Explanation: Steel is an alloy made by combining iron and other elements, the most common of these being carbon. When carbon is used, its content in the steel ... 11% chromium content by mass. Stainless steel differs from carbon steel by the amount of chromium present.
Description : Ammonium chloride solution is stored/ treated in __________ vessels/pipes. (A) Plain carbon steel (B) Stainless steel (C) Rubber or durmet-20 lined (D) Lead
Last Answer : (C) Rubber or durmet-20 lined
Description : Pipes for bi-cycle frames are made of __________ steel. (A) Hot rolled (B) Chrome carbon (C) Cold rolled (D) Stainless
Last Answer : (C) Cold rolled
Description : Water gas generator is made of (A) Carbon steel-brick lined (B) Stainless steel-lead lined (C) Cast iron (D) High carbon steel-porcelain lined
Last Answer : (A) Carbon steel-brick lined
Description : Mild steel is (A) A low carbon steel (0.05 to 0.3% carbon) (B) Highly resistant to corrosion (as much as stainless steel) (C) A high carbon steel (0.5 to 1.5% carbon) (D) Very poor in strength & ductility
Last Answer : (A) A low carbon steel (0.05 to 0.3% carbon)
Description : Generally __________ are subjected to galvanising (i.e., zinc coating). (A) Non-ferrous metals (B) Non-metals (C) Low carbon steels (D) Stainless steel
Last Answer : (C) Low carbon steels
Description : In the Kraft (sulphate) process for the paper manufacture, the digestor is made of (A) Cast iron (B) Stainless steel (C) Karbate carbon (D) Wrought iron
Description : Dies for wire drawing are generally made of (A) Mild steel (B) Stainless steel (C) Carbides (D) High carbon stee
Last Answer : (C) Carbides
Description : Ball bearings are generally made of (A) Plain carbon steel (B) Chrome carbon steel (C) Stainless steel (D) Malleable cast iron
Last Answer : (B) Chrome carbon steel
Description : Carbon tetrachloride can be stored in a storage vessel made of (A) High silicon iron (14% Si) (B) Tin (C) Stainless steel (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : Steel balls for ball bearings are generally made of __________ steel. (A) Cast (B) Stainless (C) Free carbon (D) Carbon chrome
Last Answer : (D) Carbon chrome
Description : Aqueous nitric acid is stored in __________ vessel. (A) Plain carbon steel (B) Stainless steel (C) Cast iron (D) Thermosetting plastic material
Last Answer : (C) Cast iron
Description : Galvanising is generally done on (A) Non-ferrous metals (B) Low carbon steel (C) Stainless steel (D) Cast iron
Last Answer : (B) Low carbon steel
Description : Which metal is added to steel to make it stainless steel? A. Chromium (Answer) B. Aluminium C. Carbon D. Copper
Last Answer : A. Chromium (Answer)
Description : Heat exchanger tubes are never made of (A) Plain carbon steel (B) Stainless steel (C) Lead (D) Copper
Description : For hard facing base alloys used are a) high carbon steel b) high carbon iron c) carbon steel d) stainless steel
Last Answer : b) high carbon iron
Description : Which of the following is the cheapest material of construction for the storage of sodium hydroxide upto a concentration of 75%? (A) Stainless steel (B) Plain carbon steel (C) Nickel (D) Copper
Last Answer : (B) Plain carbon steel
Description : In a drilling process, the metal is removed by both shearing & extrusion. General purpose drills are made of (A) Stainless steel (B) Mild steel (C) High speed steel (D) High carbon steel
Last Answer : (C) High speed steel