Description : __________ joint is usually used for joining cast iron pipes mostly used for temporary pipelines, where it may be necessary to dismantle & reassemble the pipeline very frequently. (A) Collar (B) Flanged (C) Bell and Spigot (D) Expansion
Last Answer : Option B
Description : Asbestos pipes are joined by means of (A) Flanged joint (B) Flexible joint (C) Dresser coupling joint (D) Simplex joint
Last Answer : (D) Simplex joint
Description : Cast iron detachable joint is used in __________ pipes. (A) Steel (B) Cast iron (C) Asbestos cement (D) Reinforced cement concrete
Last Answer : (A) Steel
Description : The joint used for joining the plain ends of cast iron pipes, is (A) Flanged joint (B) Socket and spigot joint (C) Dresser coupling joint (D) Flexible joint
Last Answer : (C) Dresser coupling joint
Description : The type of joint generally used in cast iron pipes, is (A) Socket and spigot joint (B) Flanged joint (C) Dresser coupling joint (D) All the above
Last Answer : (D) All the above
Description : Lead is poured into the joint between two- __________ pipes. (A) Mild steel (B) Concrete (C) Cast iron (D) Asbestos cement
Last Answer : (C) Cast iron
Description : Lead is poured into the joint between two __________ pipes. (A) Mild steel (B) Concrete (C) Cast iron (D) Asbestos cement
Last Answer : Option C
Description : In pumping stations, the type of joint generally used, is (A) Socket and spigot joint (B) Flanged joint (C) Expansion joint (D) Dresser coupling joint
Last Answer : (B) Flanged joint
Description : _________ pipe is the most suitable for carrying sanitary drainage. (A) Stainless steel (B) Reinforced cement concrete (C) Cast iron (D) Asbestos cement
Last Answer : C) Cast iron
Description : Glass pipes can be joined by (A) Flanges (B) Welding (C) Soldering (D) Bell and spigot joint
Last Answer : (D) Bell and spigot joint
Description : Disc compensators are provided in large diameter fuel gas carrying pipelines to (A) Keep the pipe in proper orientation (B) Make the pipe joint leak-proof (C) Account for contraction/expansion ... due to temperature changes of the surroundings (D) Account for the pressure variation side the pipeline
Last Answer : (C) Account for contraction/expansion of pipe due to temperature changes of the surroundings
Description : Lead is poured into the joints between two __________ pipes. (A) Cast iron (B) Steel (C) Concrete (D) Plastic
Last Answer : (A) Cast iron
Description : The maximum shear stress (q) in concrete of a reinforced cement concrete beam is (A) Shear force/(Lever arm × Width) (B) Lever arm/(Shear force × Width) (C) Width/(Lever arm × Shear force) (D) (Shear force × Width)/Lever arm
Last Answer : Answer: Option A
Description : The allowable tensile stress in mild steel stirrups, reinforced cement concrete, is (A) 1400 kg/cm2 (B) 190 kg/cm2 (C) 260 kg/cm2 (D) 230 kg/cm
Description : Higher workability of concrete is required if the structure is (A) Made with cement concrete (B) Thick and reinforced (C) Thin and heavily reinforced (D) Thick and heavily reinforced
Last Answer : Answer: Option D
Description : In flat roof of reinforced cement concrete, the recommended angle of slope, is (A) Zero (B) A few degrees (C) 10° (D) 200
Last Answer : Answer: Option B
Description : In the reinforced cement concrete structure, the steel reinforcement consists of . (a) Deformed bars (b) Cold twisted bars (c) Mildsteel and medium tensile steel bars (d) All of these
Last Answer : (d) All of these
Description : Reinforced cement concrete is equally strong in taking (a) Tensile and compressive stress (b) Compressive and shear stresses. (c) Tensile, compressive and shear stresses. (d) Tensile and shear stresses.
Last Answer : (c) Tensile, compressive and shear stresses.
Description : Specific weight of Reinforced cement concrete is [ A ] 24 N/m3 [ B ] 24 kN/m3 [ C ] 25 N/m3 [ D ] 25 kN/m3
Last Answer : [ D ] 25 kN/m3
Description : Which cement should not be used for bridge slabs ro RCC frames a) OPC b) Portland Pozzolana cement * c) Portland furnace slag cement d) Rapid hardening cement
Last Answer : b) Portland Pozzolana cement *
Description : If b is the width of a plate joined by diamond riveting of diameter d, the efficiency of the joint is given by (A) (b + d)/b (B) (b - d)/b (C) (d - b)/d (D) (b - d)/d
Last Answer : (B) (b - d)/b
Description : A reinforced concrete slab is 75 mm thick. The maximum size of reinforcement bar that can be used is (a) 6 mm diameter (b) 8 mm diameter (c) 10 mm diameter (d) 12 mm diameter
Last Answer : (b) 8 mm diameter
Description : If the bond stress developed in a reinforced concrete beam is more than permissible value, it can be brought down by. (a) Increasing the depth of beam (b) Increasing the number of bars. (c) Decreasing the diameter of the bars (d) All of these
Description : 221 For non-scouring velocity 5 m/sec, the type of sewers generally preferred to, is A. Cast iron sewers B. Cement concrete sewers C. Glazed bricks sewers D. Stone ware sewers
Last Answer : ANS: C
Description : Suggest the minimum grade of concrete for following exposure condition. i) RCC work ii) Water retaining structure iii) Sea water construction iv) Pre-stressed concrete
Last Answer : Minimum grade of concrete for following exposure condition: i) RCC work = M 20 ii) Water retaining structure = M 25 iii) Sea water construction = M 20 for PCC and M 30 for RCC iv) Pre-stressed concrete = M 30
Description : Copper is dissolved from its ore by H2SO4 in a percolation tank made of (A) Wood (B) Stainless steel (C) Reinforced concrete lined with lead (D) High silicon iron (14% Si)
Last Answer : (C) Reinforced concrete lined with lead
Description : In cement pressure grouting G.I pipes of diameter …… and ……length, should be fixed in drilled holes a) 12 to 20 mm, 200 mm* b) 12 to 20 mm, 300 mm c) 12 to 25 mm, 500 mm d) 20 to 25 mm, 300 mm
Last Answer : a) 12 to 20 mm, 200 mm*
Description : The weight of reinforced concrete, is generally taken as (A) 2200 kg/m3 (B) 2300 kg/m3 (C) 2400 kg/m3 (D) 2500 kg/m
Last Answer : Answer: Option C
Description : The weight of reinforced concrete is generally take as (a) 2300 kg/m3 (b) 2400 kg/m3 (c) 2500kg/m3 (d) 2800kg/m3
Last Answer : (d) 2800kg/m3
Description : For reinforced concrete work, aggregates having a nominal size of -------- are generally used [ A ] 20 mm [ B ] 40 mm [ C ] 50 mm [ D ] 60 mm
Last Answer : [ A ] 20 mm
Description : A flanged joint is composed of all but which of the following? a) The flange b) The bolts. c) The assembly method d) The gasket.
Last Answer : b) The bolts
Description : The asbestos cement pipes are generally laid A. Horizontally B. Vertically C. At an angle of 30° D. At an angle of 60°
Last Answer : ANS: B
Description : Steel rods are used in reinforced concrete to increase its __________ strength. (A) Shear (B) Tensile (C) Compressive (D) None of these
Last Answer : (B) Tensile
Description : Flanged beams are preferred when the concrete in the slab is on the [ A ] compression side of the beam [ B ] tension side of the beam [ C ] may be compression side or tension side of the beam [ D ] none of the above
Last Answer : [ A ] compression side of the beam
Description : To prevent compressive stresses in a rigid concrete pavement, the joint provided, is (A) Expansion joint (B) Contraction joint (C) Hinged joint (D) All the above
Description : The surface where two successive placements of concrete meet, is known as (A) Contraction joint (B) Expansion joint (C) Construction joint (D) Both (a) and (b)
Description : Tie bars in cement concrete pavements are at (A) Expansion joints (B) Contraction joints (C) Warping joints (D) Longitudinal joints
Description : __________ joint is mostly used for joining pipes carrying water at low pressure. (A) Nipple (B) Socket (C) Union
Description : Find the shear stress in a flange at the junction of hub in rigid flanged coupling if torsional moment is 2980N-m and diameter of hub being 125mm. Also the thickness of flange is 25mm. a) 6.77N/mm2 b) 10.24N/mm2 c) 4.84N/mm2 d) 4.22N/mm2
Last Answer : c) 4.84N/mm2
Description : Flexible plastic pipes are made of (A) High density polyethylene (HDPE) (B) Low density polyethylene (LDPE) (C) Polypropylene (D) Unsaturated polyester
Last Answer : (B) Low density polyethylene (LDPE)
Description : The most economical flow control valve for use with large diameter pipes is a (A) Butterfly valve (B) Globe valve (C) Needle valve (D) None of these
Last Answer : (A) Butterfly valve
Description : Large diameter sewers subjected to external pressure alone, are reinforced A. Near the inner surface of the pipe B. Near the outer surface of the pipe C. Both A. and B. D. With elliptical cage
Last Answer : ANS: D
Description : Steel pipe are (A) Suitable for withstanding high internal pressure (B) Connected by riveted or welded joints (C) Generally laid underground and no expansion joint is required (D) Likely to last 100 years under ordinary conditions
Last Answer : (D) Likely to last 100 years under ordinary conditions
Description : The equivalent diameter for the annulus of a double pipe heat exchanger, whose inner pipe has fins on the outside is __________ compared to the same size pipes without fins. (A) More (B) Less (C) Same (D) Unpredictable
Last Answer : (B) Less
Description : Asbestos pipes are (A) Light in weight and easy to transport (B) Highly resistant to corrosion (C) High flexible to accommodate deflection upto 12° (D) All the above
Description : Pick up the wrong nominal internal diameter of cast iron (spun) pipes in mm from the following: (A) 300 (B) 400 (C) 550 (D) 650
Last Answer : (C) 550
Description : Plastic tubes & pipes are generally made by __________ moulding. (A) Injection (B) Transfer (C) Extrusion (D) Compression
Last Answer : (C) Extrusion
Description : Which of the subsequent must not be a section of cotter joint? a) Socket b) Spigot c) Cotter d) Collar
Last Answer : d) Collar
Description : Which of the following is not a part of cotter joint? a) Socket b) Spigot c) Cotter d) Collar