# Practice Test: Question Set - 16

**1. The moment diagram for a cantilever carrying a concentrated load at its free end, will be**

- (A) Triangle

- (B) Rectangle

- (C) Parabola

- (D) Cubic
parabola

**2. The forces, which meet at one point, but their lines of action do not lie in a plane, are called**

- (A) Coplanar non-concurrent forces

- (B) Non-coplanar concurrent forces

- (C) Non-coplanar non-concurrent forces

- (D) Intersecting forces

**3. The shear stress at any section of a shaft is maximum**

- (A) At the
centre of the section

- (B) At a
distance

*r*/2 from the centre

- (C) At the top
of the surface

- (D) At
a distance 3/4

*r*from the centre

**4. If the width**

*b*and depth*d*of a beam simply supported with a central load are interchanged, the deflection at the centre of the beam will be changed in the ratio of- (A)

*b*/

*d*

- (B)

*d*/

*b*

- (C) (

*d*/

*b*)

^{2}

- (D) (

*b*/

*d*)

^{2}

**5. The centre of percussion of a solid cylinder of radius r resting on a horizontal plane will be**

- (A) r/2

- (B) 2r/3

- (C) r/A

- (D) 3r/2

**6. A three hinged parabolic arch hinged at the crown and springing, has a horizontal span of 4.8 m and a central rise of 1 m. It carries a uniformly distributed load of 0.75 tonne per metre over half left hand span. The horizontal thrust at the support will be**

- (A) 10.8
tonnes

- (B) 1.08 tonnes

- (C) 1.8 tonnes

- (D) 0.8 tonnes

**7. A member which is subjected to reversible tensile or compressive stress may fail at a stress lower than the ultimate stress of the material. This property of metal, is called**

- (A) Plasticity
of the metal

- (B) Elasticity
of the metal

- (C) Fatigue of
the metal

- (D) Workability
of the metal

**8. A body moves, from rest with a constant acceleration of 5 m per sec. The distance covered in 5 sec is most nearly**

- (A) 38 m

- (B) 62.5 m

- (C) 96 m

- (D) 124 m

**9. Stress in a beam due to simple bending, is**

- (A) Directly
proportional

- (B) Inversely
proportional

- (C) Curvilinearly
related

- (D) None of
these

**10. The ratio of the tensile stress developed in the wall of a boiler in the circumferential direction to the tensile stress in the axial direction, is**

- (A) 4

- (B) 3

- (C) 2

- (D) 1

**11. According to law of triangle of forces**

- (A) Three forces acting at a point will be in
equilibrium

- (B) Three forces acting at a point can be
represented by a triangle, each side being proportional to force

- (C) If three forces acting upon a particle are
represented in magnitude and direction by the sides of a triangle, taken in
order, they will be in equilibrium

- (D) If three forces acting at a point are in
equilibrium, each force is proportional to the sine of the angle between the
other two

**12. The deflection due to couple**

*M*at the free end of a cantilever length*L*is- (A)

*ML*/

*EI*

- (B) 2

*ML*/

*EI*

- (C)

*ML*

^{2}/2

*EI*

- (D)

*M*

^{2}

*L*/2

*EI*

**13. The bending moment is maximum on a section where shearing force**

- (A) Is maximum

- (B) Is minimum

- (C) Is equal

- (D) Changes sign

**14. Which one of the following statements is not correct?**

- (A) The tangent of the angle of friction is equal to
coefficient of friction

- (B) The angle of repose is equal to angle of
friction

- (C) The tangent of the angle of repose is equal to
coefficient of friction

- (D) The sine of the angle of repose is equal to
coefficient to friction

**15. For a simply supported beam with a central load, the bending moment is**

- (A) Least at the
centre

- (B) Least at the
supports

- (C) Maximum at
the supports

- (D) Maximum at
the centre

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