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Concrete technology rcc
| 1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
| 2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
| Q1 ⇒ The factor of safety for steel is lower than that for concrete [other wrong options] [Discuss in forum] |
| Q2 ⇒ Assertion A : The load factor for live load is greater than that for dead load. Reason R : The live loads are more uncertain than dead loads. Both A and R are true and R is the correct explanation of A. [other wrong options] [Discuss in forum] |
| Q3 ⇒ The approximate value of the ratio between direct tensile strength and flexural strength is. 0.5 [other wrong options] [Discuss in forum] |
| Q4 ⇒ For a reinforced concrete section, the shape of shear stress diagram is parabolic above neutral axis and rectangular below neutral axis [other wrong options] [Discuss in forum] |
| Q5 ⇒ Due to shrinkage stresses, a simply supported beam having reinforcement only at bottom tends to. deflect downward [other wrong options] [Discuss in forum] |
| Q6 ⇒ The percentage of voids in cement is approximately. 40% [other wrong options] [Discuss in forum] |
| Q7 ⇒ Diagonal tension in a beam increases below the neutral axis and decreases above the neutral axis [other wrong options] [Discuss in forum] |
| Q8 ⇒ M10 grade of concrete approximates. 1 : 3 : 6 mix [other wrong options] [Discuss in forum] |
| Q9 ⇒ Normally prestressing wires are arranged in the. lower part of the beam [other wrong options] [Discuss in forum] |
| Q10 ⇒ 1% of voids in a concrete mix would reduce its strength by about. 5% [other wrong options] [Discuss in forum] |
| Q11 ⇒ If a beam fails in bond, then its bond strength can be increased most economi-cally by using thinner bars but more in number [other wrong options] [Discuss in forum] |
| Q12 ⇒ The standard sand now a days used in India, is obtained from. Ennore (Madras) [other wrong options] [Discuss in forum] |
| Q13 ⇒ Cube strength of controlled concrete to be used for pretensioned and post-tensioned work respectively should not be less than. 42 MPa and 35 MPa [other wrong options] [Discuss in forum] |
| Q14 ⇒ If the permissible stress in steel in tension is 140 N/mm2, then the depth of neutral axis for a singly reinforced rectangular balanced section will be. 0.40 d [other wrong options] [Discuss in forum] |
| Q15 ⇒ If nominal shear stress tv exceeds the design shear strength of concrete xc, the nominal shear reinforcement as per IS : 456-1978 shall be provided for carrying a shear stress equal to xv - TC [other wrong options] [Discuss in forum] |
| Q16 ⇒ The increased cohesiveness of concrete, makes it. less liable to segregation [other wrong options] [Discuss in forum] |
| Q17 ⇒ For a cantilever of effective depth of 0.5m, the maximum span to satisfy vertical deflection limit is. 3.5 m [other wrong options] [Discuss in forum] |
| Q18 ⇒ If the depth of actual neutral axis in a beam is more than the depth of critical neutral axis, then the beam is called over-reinforced beam [other wrong options] [Discuss in forum] |
| Q19 ⇒ For the construction of cement concrete floor, the maximum permissible size of aggregate, is. 10 mm [other wrong options] [Discuss in forum] |
| Q20 ⇒ The ratio of the diameter of reinforcing bars and the slab thickness is. 1/8 [other wrong options] [Discuss in forum] |
| Or |