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 : 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 : If the permissible compressive stress for a concrete in bending is C kg/m2 , the modular ratio is (A) 2800/C (B) 2300/2C (C) 2800/3C (D) 2800/C
Description : A reinforced concrete cantilever beam is 3.6 m long, 25 cm wide and has its lever arm 40 cm. It carries a load of 1200 kg at its free end and vertical stirrups can carry 1800 kg. Assuming concrete to carry one- ... beam, the number of shear stirrups required, is (A) 30 (B) 35 (C) 40 (D) 45
Description : If the permissible compressive stress for a concrete in bending is ckg/m2, the modular ratio is (a) 2800/C (b) 2300/C (c) 2800/3C (d) 2800/4C
Last Answer : (d) 2800/4C
Description : According to IS:456-2000, the total acid soluble chlorides in concrete is restricted to________ of concrete [ A ] 0.2 kg/m3 [ B ] 0.4 kg/m3 [ C ] 2 kg/m3 [ D ] 4 kg/m3
Last Answer : [ B ] 0.4 kg/m3
Description : A simply supported beam 6 m long and of effective depth 50 cm, carries a uniformly distributed load 2400 kg/m including its self weight. If the lever arm factor is 0.85 and permissible tensile stress of steel is 1400 kg/cm2 ... area of steel required, is (A) 14 cm (B) 15 cm2 (C) 16 cm2 (D) 17 cm
Description : If permissible working stresses in steel and concrete are respectively 1400 kg/cm2 and 80 kg/cm2 and modular ratio is 18, in a beam reinforced in tension side and of width 30 cm and having effective depth 46 cm, the lever arms of the section, is (A) 37 cm (B) 38 cm (C) 39 cm (D) 40 cm
Last Answer : Answer: Option D
Description : The reinforced concrete beam which has width 25 cm, lever arm 40 cm, shear force 6t/cm2 , safe shear stress 5 kg/cm2 and B.M. 24 mt, (A) Is safe in shear (B) Is unsafe in shear (C) Is over safe in shear (D) Needs redesigning
Last Answer : Answer: Option B
Description : A short column 20 cm 20 cm in section is reinforced with 4 bars whose area of cross section is 20 sq. cm. If permissible compressive stresses in concrete and steel are 40 kg/cm2 and 300 kg/cm2 , the Safe load on ... should not exceed (A) 4120 kg (B) 41,200 kg (C) 412,000 kg (D) None of these
Description : The stresses developed in concrete and steel in reinforced concrete beam 25 cm width and 70 cm effective depth, are 62.5 kg/cm2 and 250 kg/cm2 respectively. If m = 15, the depth of its neutral axis is (A) 20 cm (B) 25 cm (C) 30 cm (D) 35 cm
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
Last Answer : Answer: Option A
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 : The weight of 1 m3 of brick earth, is about (A) 1200 kg (B) 1500 kg (C) 1800 kg (D) 2000 kg
Description : If is the angle of repose of soil of weight w kg/m3 , the horizontal pressure p at a depth of h metres per metre length of wall, is (A) wh × [(1 - sin )/(1 + )] (B) (wh/2) × [(1 - sin )/(1 + )] (C) wh - sin )/(1 + )] (D) wh )/(1 - )
Description : Utilizing the answer to the previous problem, estimate the overall or average increase in temperature ( ΔT) of the concrete roof from the energy absorbed from the sun during a12hour day. Assume that all of the radiation absorbed goes into ... °C b. 8.9°C c. 9.9°C d. 10.9°C formula: ΔQ = m c ΔT
Last Answer : 7.9 °C
Description : (4) water and petrol are immiscible with each other and petrol which forms the upper layer continues to burn Explanation: Water is not effective in extinguishing a fire caused by petrol because water and ... . Water cannot generally be used to extinguish a gasoline fire, unless used in a fine mist.
Last Answer : "All the four quantum numbers of two electrons in an atom are not the same." It is the law of (1) Hund’s (2) Exclusion Principle of Pauli (3) Uncertainty Principle of Giesenberg (4) Avogadro’s law
Description : Large diameter reinforced cement concrete (RCC) pipes are generally joined by __________ joint. (A) Flanged iron (B) Collar (C) Flexible (D) Expansion
Last Answer : Option B
Description : For 100 sq. m cement concrete (1 : 2: 4) 4 cm thick floor, the quantity of cement required, is (A) 0.90 m3 (B) 0.94 m3 (C) 0.98 m3 (D) 1.00 m3
Last Answer : (B) 0.94 m3
Description : The expected out turn of cement concrete 1 : 2 : 4 per mason per day is (A) 1.5 m3 (B) 2.5 m3 (C) 3.5 m3 (D) 5.0 m3
Last Answer : (D) 5.0 m3
Description : Refer to CAP697 MRJT1 Fig. 4.3.6 Given: Distance to alternate 400nm Landing mass at alternate 50,000kg Headwind component 25kt The alternate fuel required is: a. 2550kg b. 2800kg c. 2900kg d. 2650kg
Last Answer : b. 2800kg
Description : A flight is planned from L to M, distance 850 nm. Wind component out is 35 kt(TWC), TAS 450kt. Mean fuel flow out is 2500kg/hr, mean fuel flow inbound is 1900kg/hr and the fuel available is 6000kg. The time ... 1hr 30 min, 660nm b. 1hr 30 min, 616nm c. 1hr 15 min, 606nm d. 1hr 16 min, 616nm
Last Answer : d. 1hr 16 min, 616nm
Description : A flight is planned from L to M, distance 850 nm. Wind component out is 35 kt(TWC), TAS 450kt. Mean fuel flow out is 2500kg/hr, mean fuel flow inbound is 1900kg/hr and the fuel available is 6000kg. The time ... 30 min, 660nm b. 1hr 30 min, 616nm c. 1hr 15 min, 606nm d. 1hr 16 min, 616nm
Description : The live load to be considered for an accessible roof, is (A) Nil (B) 75 kg/m3 (C) 150 kg/m2 (D) 200 kg/cm
Description : 19. The density of a liquid in kg/m3 is numerically equal to its specific gravity. A) True B) False
Last Answer : A
Description : The density of water is 1000 kg/m3 at (A) 0° C (B) 0° K (C) 4° C (D) 20° C
Description : An odd shaped body weighing 7.5 kg and occupying 0.01 m3 volume will be completely submerged in a fluid having specific gravity of (A) 1 (B) 1.2 (C) 0.8 (D) 0.75
Description : The mass of 2.5 m3 of a certain liquid is 2 tonnes. Its mass density is (A) 200 kg/m3 (B) 400 kg/m3 (C) 600 kg/m3 (D) 800 kg/m
Description : A liquid compressed in cylinder has a volume of 0.04 m3 at 50 kg/cm² and a volume of 0.039 m3 at 150 kg/cm². The bulk modulus of elasticity of liquid is (A) 400 kg/cm² (B) 4000 kg/cm² (C) (D)
Description : For melting one tonne of cast iron (A) 700 m3 air is required (B) 20 kg limestone is required (C) One quintal coke is required (D) All the above
Description : The bulk density of aggregates , is (a) kN/m3 (b) Kg/1tr (c) g/cm3 (d) All the above.
Last Answer : (b) Kg/1tr
Description : According to IS: 456-2000, the maximum cement content exclusive of admixtures is [ A ] 200 kg/m3 [ B ] 300 kg/m3 [ C ] 450 kg/m3 [ D ] 550 kg/m3
Last Answer : [ C ] 450 kg/m3
Description : According to IS:456 minimum cement content inclusive of admixtures is [ A ] 200 kg/m3 [ B ] 300 kg/m3 [ C ] 450 kg/m3 [ D ] 550 kg/m3
Last Answer : [ B ] 300 kg/m3
Description : If a concrete column 200 200 mm in cross-section is reinforced with four steel bars of 1200 mm2 total cross-sectional area. Calculate the safe load for the column if permissible stress in concrete is 5 N/mm2 ... 15 Ec (A) 264 MN (B) 274 MN (C) 284 MN (D) 294 MN
Last Answer : (C) 284 MN
Description : A reinforced concrete beam is assumed to be made of (A) Homogeneous material (B) Heterogeneous material (C) Isotropic material (D) None of these
Last Answer : (B) Heterogeneous material
Description : A pre-stressed concrete member (A) Is made of concrete (B) Is made of reinforced concrete (C) Is stressed after casting (D) Possesses internal stresses
Description : Steel beam theory is used for (A) Design of simple steel beams (B) Steel beams encased in concrete (C) Doubly reinforced beams ignoring compressive stress in concrete (D) Beams if shear exceeds 4 times allowable shear stress
Description : In a singly reinforced beam, if the permissible stress in concrete reaches earlier than that in steel, the beam section is called (A) Under-reinforced section (B) Over reinforced section (C) Economic section (D) Critical section
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
Description : According to I.S.: 456, 1978 the thickness of reinforced concrete footing on piles at its edges, is kept less than (A) 20 cm (B) 30 cm (C) 40 cm (D) 75 cm
Description : The section of a reinforced beam where most distant concrete fibre in compression and tension in steel attains permissible stresses simultaneously, is called (A) Balanced section B) Economic section (C) Critical section (D) All the above
Description : A singly reinforced concrete beam of 25 cm width and 70 cm effective depth is provided with 18.75 cm2 steel. If the modular ratio (m) is 15, the depth of the neutral axis, is (A) 20 cm (B) 25 cm (C) 30 cm (D) 35 cm
Description : If the depth of actual neutral axis of a doubly reinforced beam (A) Is greater than the depth of critical neutral axis, the concrete attains its maximum stress earlier (B) Is less ... critical neutral axis; the concrete and steel attain their maximum stresses simultaneously (D) All the above
Description : In a singly reinforced beam (A) Compression is borne entirely by concrete (B) Steel possesses initial stresses when embedded in concrete (C) Plane sections transverse to the centre line ... Elastic moduli for concrete and steel have different values within the limits of deformation of the beam
Description : According to I.S.: 456, 1978 the thickness of reinforced concrete footing on piles at its edges, is kept less than (A) 5 cm (B) 10 cm (C) 15 cm (D) 20 cm
Description : The advantage of reinforced concrete, is due to (A) Monolithic character (B) Fire-resisting and durability (C) Economy because of less maintenance cost (D) All the abov