For a certain set of external loads, concordant profile in a prestressed beam represents to some scale the (a) Influence line diagram (b) Shear force diagram (c) Bending moment diagram (d) Williot-Mohr diagram

For a certain set of external loads, concordant profile in a prestressed beam represents to some scale the
(a) Influence line diagram (b) Shear force diagram
(c) Bending moment diagram (d) Williot-Mohr diagram
by

1 Answer

Answer :

(c) Bending moment diagram
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The amount of reinforcement for main bars in a slab, is based upon (A) Minimum bending moment (B) Maximum bending moment (C) Maximum shear force (D) Minimum shear force

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A construction joint is provided where (A) Bending moment is small (B) Shear force is small (C) The member is supported by other member (D) All the above

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The amount of reinforcement for main bars in a slab, is based upon (a) Maximum bending moment (b) Minimum bending moment (c) Maximum shear force (d) Minimum shear force

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The deep beams are designed for (a) Shear force only (b) Bending moment only (c) Both S.F & B.M (d) Bearing

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A beam of uniform strength has a. same cross-section throughout the beam b. same bending stress at every section c. same bending moment at every section d. same shear stress at every section

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In a loaded beam, the point of contraflexure occurs at a section where (A) Bending moment is minimum (B) Bending moment is zero or changes sign (C) Bending moment is maximum (D) Shearing force is maximum

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is the pre-stressed force applied to the tendon of a rectangular pre-stressed beam whose area of cross section is and sectional modulus is . The maximum stress in the beam, subjected to a maximum bending moment , is (A) f = (P/A) + (Z/M) (B) f = (A/P) + (M/Z) (C) f = (P/A) + (M/Z) (D) f = (P/A) + (M/6Z)

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is the pre-stressed force applied to tendon of a rectangular pre-stressed beam whose area of cross section is and sectional modulus is . The minimum stress on the beam subjected to a maximum bending moment is (A) f = (P/A) - (Z/M) (B) f = (A/P) - (M/Z) (C) f = (P/A) - (M/Z) (D) f = (P/A) - (M/6Z)

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For an I beam, the shape factor is 1.12. If the allowable stress (with factor of safety in bending as 1.5) is increased by 20% for wind and earthquake loads, the modified load factor is (a) 1.10 (b) 1.25 (c) 1.35 (d) 1.40

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n case of a cantilever beam having concentrated loads, shear force variation will be (a) Linear (b) Parabolic (c) Cubic (d) None

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Last Answer : (d) None

In case of a cantilever beam having concentrated loads, shear force variation will be (a) Linear (b) Parabolic (c) Cubic (d) None

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The concavity produced on the beam section about the centre line when downward force acts on it is called as (a) Hogging or positive bending moment (b) Hogging or negative bending moment (c) Sagging or positive bending moment (d) Sagging or negative bending moment

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Torque and bending moment of 100 kN.m and 200 kN.m acts on a shaft which has external diameter twice of internal diameter. What is the external diameter of the shaft which is subjected to a maximum shear stress of 90 N/mm2? a. 116.5 mm b. 233.025 mm c. 587.1 mm d. 900 mm

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Last Answer : c. 587.1 mm

Pick up the incorrect statement from the following. The intensity of horizontal shear stress at the elemental part of a beam section, is directly proportional to (A) Shear force (B) Area of the section (C) Distance of the C.G. of the area from its neutral axis (D) Moment of the beam section about its neutral axis

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When a series of wheel loads crosses a simply supported girder, the maximum bending moment under any given wheel load occurs when (A) The centre of gravity of the load system is midway between the centre of span and wheel load under consideration (B) The centre of span is midway between the centre of gravity of the load system and the wheel load under consideration (C) The wheel load under consideration is midway between the centre of span and the centre of gravity of the load system (D) None of the above

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The maximum bending moment due to a train of wheel loads on a simply supported girder (A) Always occurs at centre of span (B) Always occurs under a wheel load (C) Never occurs under a wheel load (D) None of the above

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A sudden jump anywhere on the Bending moment diagram of a beam is caused by (a) Couple acting at that point (b) Couple acting at some other point (c) Concentrated load at the point (d) Uniformly distributed load or Uniformly varying load on the beam

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A sudden increase or decrease in shear force diagram between any two points indicates that there is (a) No loading between the two points (b) Point loads between the two points (c) U.D.L. between the two points (d) None of these

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