The ratio of moments of inertia of a triangular section about its base and about a centroidal axis 

parallel to its base, is 

(A) 1.0 

(B) 1.5 

(C) 2.0 

(D) 3.0 

1 Answer

Answer :

(D) 3.0 

Related questions

Description : The moment of inertia of a semi-circle of radius r with respect to a centroidal axis parallel to the diameter is a.0.33 r2 b.0.11 r2 c.0.055 r2 d.0.05 r2 e.0.22 r2

Last Answer : b. 0.11 r2

Description : Polar moment of inertia is a.Applicable to masses whereas moment of inertia is applicable to area only b.The moment of inertia for an area ralative to a line or axis which is out the plane of area ... The moment of inertia for an area relative to a line or axis perpendicular to the plane of the area

Last Answer : e. The moment of inertia for an area relative to a line or axis perpendicular to the plane of the area

Description : Moment of Inertia of triangular section about an axis passing through its base is given by a.bh3/12 b.bh3/32 c.bh3/36 d.None of the above e.Tapered bearing

Last Answer : a. bh3/12

Description : The moment of inertia of a triangular section (height h, base b) about its base, is  (A) bh²/12  (B) b²h/12  (C) bh3 /12  (D) b 3h/12 

Last Answer : (C) bh3 /12 

Description : The neutral axis corresponding to balanced section condition is termed as [ A ] Critical neutral axis [ B ] Centroidal neutral axis [ C ] Balanced neutral axis [ D ] All the above

Last Answer : [ A ] Critical neutral axis

Description : The moment of inertia of a rectangular section of width and depth about an axis passing  through C.G. and parallel to its width is  (A) BD²/6  (B) BD3 /6  (C) BD3 /12  (D) B²D/6 

Last Answer : (C) BD3 /12 

Description : If Ix  and Iy are the moments of inertia of a section about X and Y axes, the polar moment of inertia  of the section, is  (A) (IX + IY)/2  (B) (IX - IY)/2  (C) IX + IY (D) (IX/IY)

Last Answer : (C) IX + I

Description : Maximum shear stress in a triangular section ABC of height H and base B occurs at _________ a. H b. H/2 c. H/3 d. neutral axis

Last Answer : b. H/2

Description : What is the shear stress acting along the neutral axis of triangular beam section, with base 60 mm and height 150 mm, when shear force of 30 kN acts? a. 15.36 N/mm2 b. 10.6 N/mm2 c. 8.88 N/mm2 d. Insufficient data

Last Answer : c. 8.88 N/mm2

Description : If is the sectional area of a pre-stressed rectangular beam provided with a tendon pre-stressed by a force through its centroidal longitudinal axis, the compressive stress in concrete, is (A) P/A (B) A/P (C) P/2A (D) 2A/P

Last Answer : Answer: Option A

Description : A vertical column has two moments of inertia (i.e. Ixx and Iyy ). The column will tend to buckle in the direction of the (a) axis of load (b) perpendicular to the axis of load (c) maximum moment of inertia (d) minimum moment of inertia

Last Answer : (d) minimum moment of inertia

Description : If the loading on a pre-stressed rectangular beam, is uniformly distributed, the tendon to be provided should be. (A) Straight below centroidal axis (B) Parabolic with convexity downward (C) Parabolic with convexity upward (D) Straight above centroidal axis

Last Answer : Answer: Option B

Description : If the tendon is placed at an eccentricity e below the centroidal axis of the longitudinal axis of a rectangular beam (sectional modulus Z and stressed load P in tendon) the stress at the extreme top edge (A) Is ... by PZ/e (B) Is increased by Pe/Z (C) Is decreased by Pe/Z (D) Remains unchanged

Last Answer : Answer: Option C

Description : A simply supported rectangular beam is uniformly loaded and is prestressed. The tendon provided for prestressing should be (a) Straight, above centroidal axis (b) Straight, below centroidal axis (c) parabolic, with convexity upward (d) Parabolic, with convexity downward

Last Answer : (d) Parabolic, with convexity downward

Description : If is the shear force at a section of an I-joist, having web depth and moment of inertia about its neutral axis, the difference between the maximum and mean shear stresses in the web is, (A) Sd²/8I (B) Sd²/12I (C) Sd²/16I (D) Sd²/24I

Last Answer : (D) Sd²/24I

Description : A triangular section having base b, height h, is placed with its base horizontal. If the shear stress at a depth y from top is q, the maximum shear stress is (A) 3S/bh (B) 4S/bh (C) 4b/Sh (D) 3b/bS

Last Answer : (A) 3S/bh

Description : If M, I, R, E, F, and Y are the bending moment, moment of inertia, radius of curvature, modulus of  elasticity stress and the depth of the neutral axis at section, then  (A) M/I = R/E = F/Y (B) I/M = R/E = F/Y (C) M/I = E/R = E/Y (D) M/I = E/R = Y/F

Last Answer : (C) M/I = E/R = E/Y

Description : At any point of a beam, the section modulus may be obtained by dividing the moment of inertia of  the section by  (A) Depth of the section  (B) Depth of the neutral axis  (C) Maximum tensile stress at the section  (D) Maximum compressive stress at the section

Last Answer : (B) Depth of the neutral axis 

Description : Pick up the correct statement from the following:  (A) The moment of inertia is calculated about the axis about which bending takes place  (B) If tensile stress is less than axial ... tensile stress is equal to axial stress, the section experiences compressive stress  (D) All the above 

Last Answer : (D) All the above 

Description : What is the shear stress acting along the neutral axis, over a triangular section? a. 2.66 (S/bh) b. 1.5 (S/bh) c. 0.375 (S/bh) d. None of the above

Last Answer : a. 2.66 (S/bh)

Description : The bending stress in a curved beam is A. Zero at the centroidal axis B. Zero at the point other than centroidal axis C. Maximum at the neutral axis D. None of these

Last Answer : B. Zero at the point other than centroidal axis

Description : The bending stress in a curved beam is (A) Zero at the centroidal axis (B) Zero at the point other than centroidal axis (C) Maximum at the neutral axis (D) None of these

Last Answer : (B) Zero at the point other than centroidal axis

Description : While using three moments equation, a fixed end of a continuous beam is replaced by an additional span of (A) Zero length (B) Infinite length (C) Zero moment of inertia (D) None of the above

Last Answer : (A) Zero length

Description : The moment of inertia of a hollow circular section whose external diameter is 8 cm and interial diameter is 6 cm about the axis passing through its centre is a.66.8 cm4 b.137.5 cm4 c.550 cm4 d.33.4 cm4 e.275 cm4

Last Answer : b. 137.5 cm4

Description : Calculate the moment of inertia about the axis parallel to welds and shift it to CG by considering thickness of welds t. a) tɜ+2000t b) None of the listed c) 250000 t d) 125000 t

Last Answer : c) 250000 t

Description : ______ is the perpendicular distance between point of application of force and axis of rotation. (1) Moment arm (2) Moment of Inertia (3) Altitude (4) Base

Last Answer : (1) Moment arm Explanation: The magnitude of the moment of force acting about a point or axis is directly proportional to the distance of the force from the point or axis.

Description : The Newton's First Law is also called as (1) Law of moments (2) Law of inertia (3) Law of energy (4) Law of momentum

Last Answer : (2) Law of inertia Explanation: According to Newton's first law, an object that is at rest will stay at rest unless an unbalanced force acts upon it and an object that is in motion will not change its velocity unless an unbalanced force acts upon it. So this law is known as the law of inertia.

Description : The Newton's First Law is also called as – (1) Law of moments (2) Law of inertia (3) Law of energy (4) Law of momentum

Last Answer : (2) Law of inertia Explanation: According to Newton's first law, an object that is at rest will stay at rest unless an unbalanced force acts upon it and an object that is in motion will not change its velocity unless an unbalanced force acts upon it. So this law is known as the law of inertia.

Description : An Athlets runs before long jump to get advantage on – (1) Inertia of motion (2) Frictional force (3) Moment of a force (4) Principle of moments

Last Answer : (1) Inertia of motion Explanation: An athlete does so to build up forward momentum so that when he jumps he already has a forward motion that would be greater than that of a jump made from standing in ... in terms of inertia of motion which is the tendency of an object to resist a change in motion.

Description : If the principle of moments for any object holds, then object is in state of A. inertia B. equilibrium C. suspension D. motion

Last Answer : equilibrium

Description : The Newton’s First Law is also called as (1) Law of moments (2) Law of inertia (3) Law of energy (4) Law of momentum

Last Answer : Law of inertia

Description : An athlete runs before long jump to get advantage on (1) Inertia of motion (2) Frictional force (3) Moment of a force (4) Principle of moments

Last Answer : Inertia of motion

Description : For a beam of triangular cross section, the ratio τmax/ τav is (a) 3/2 (b) 4/2 (c) 5/2 (d) None

Last Answer : (a) 3/2

Description : What is the moment of inertia acting on a rectangle of width 15 mm and depth 40 mm about base by using theorem of parallel axes? a. 320 x 103 mm4 b. 300 x 103 mm4 c. 240 x 103 mm4 d. 80 x 103 mm

Last Answer : a. 320 x 103 mm4

Description : In plastic analysis, the shape factor for a triangular section, is  (A) 1.5  (B) 1.34  (C) 2.34  (D) 2.5 

Last Answer : (C) 2.34 

Description : The ratio of moment of inertia of a circular body about x axis to that about y axis is a.? b.? c.1?4 d.1 e.

Last Answer : e. 1

Description : The depth of centre of pressure (h) for a vertically immersed surface from the liquid surface is given by (where IG = Moment of inertia of the immersed surface about horizontal axis through its centre of gravity, A = Area of immersed surface, ... (IG/ ) - (B) (IG/ ) - (C) ( /IG) + (D) (IG/ ) +

Last Answer : Answer: Option D

Description : The base of a right triangular prism is an equilateral triangle. If the height is halved and each side of the base is doubled, find the ratio of the -Maths 9th

Last Answer : 1 : 2 Let each side of the base of the original prism be a units and the height of the prism be h units. Then Required ratio = Vol. of original prismVol. of new prismVol. of original ... )2×h3√4×(2a)2×h234×(a)2×h34×(2a)2×h2 = 2a2h4a2h2a2h4a2h = 1 : 2.

Description : The areas of cross-section of a square beam and a circular beam subjected to equal bending  moments, are same.  (A) Circular beam is more economical  (B) Square beam is more economical  (C) Both the beams are equally strong  (D) Both the beams are equally economical 

Last Answer : (B) Square beam is more economical 

Description : A bending moment may be defined as: (A) Arithmetic sum of the moments of all the forces on either side of the section (B) Arithmetic sum of the forces on either side of the section (C) Algebraic sum of the moments of all the forces on either side of the section (D) None of these

Last Answer : (C) Algebraic sum of the moments of all the forces on either side of the section

Description : For the same height, the bottom width for no tension,  (A) For triangular section is more than rectangular section  (B) For rectangular section is more than triangular section  (C) For triangular section is same as that of a rectangular section  (D) None of these 

Last Answer : (C) For triangular section is same as that of a rectangular section 

Description : The most efficient section of a channel is (A) Triangular (B) Rectangular (C) Square (D) Trapezoidal

Last Answer : Answer: Option D

Description : The locus of the moment of inertia about inclined axes to the principal axis, is  (A) Straight line  (B) Parabola  (C) Circle  (D) Ellipse

Last Answer : (D) Ellipse

Description : In a shaft shear stress intensity at a point is not (A) Directly proportional to the distance from the axis (B) Inversely proportional to the distance from the axis (C) Inversely proportional to the polar moment of inertia (D) Directly proportional to the applied torque

Last Answer : (B) Inversely proportional to the distance from the axis

Description : The effective depth of a singly reinforced rectangular beam is 300mm. the section is over-reinforced and the neutral axis is 120mm below the top. If the maximum stress attained by concrete is 5N/mn2 and the modular ratio ... in the steel will (a) 130N/mm2 (b) 135N/mm2 (c) 160N/mm2 (d) 180N/mm2

Last Answer : (b) 135N/mm2

Description : The slenderness ratio is the ratio of (a) Length of column to least radius of gyration (b) Moment of inertia to area of cross-section (c) Area of cross-section to moment of inertia (d) Least radius of gyration to length of the column

Last Answer : (a) Length of column to least radius of gyration

Description : In case of principal axes of a section  (A) Sum of moment of inertia is zero  (B) Difference of moment inertia is zero  (C) Product of moment of inertia is zero  (D) None of these 

Last Answer : (C) Product of moment of inertia is zero 

Description : Pick up the incorrect statement from the following: The torsional resistance of a shaft is directly  proportional to  (A) Modulus of rigidity  (B) Angle of twist  (C) Reciprocal of the length of the shaft  (D) Moment of inertia of the shaft section 

Last Answer : (D) Moment of inertia of the shaft section 

Description : The radius of gyration of a rectangular section is not proportional to  (A) Square root of the moment of inertia  (B) Square root of the inverse of the area  (C) Square root of the moment of inertia divided by area of the section  (D) None of these 

Last Answer : (D) None of these 

Description : If Z and I are the section modulus and moment of inertia of the section, the shear force F and bending moment M at a section are related by (A) F = My/I (B) F = M/Z (C) F = dM/dx (D) F Mdx

Last Answer : (C) F = dM/dx