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Engineering mechanics
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. |
Q21 ⇒ Which of the following is not a scalar quantity acceleration [other wrong options] [Discuss in forum] time mass volume |
Q22 ⇒ According to Lami's theorem if three forces acting at a point are in equilibrium, each force is proportional to the sine of the angle between the other two [other wrong options] [Discuss in forum] three forces acting at a point will be in equilibrium three forces acting at a point can be represented by a triangle, each side being proportional to force 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 |
Q23 ⇒ The unit of moment of inertia of an area is: m^4 [other wrong options] [Discuss in forum] kg m^2 kg/m^2 m^3 |
Q24 ⇒ The unit of work or energy in S.I. units is Joule [other wrong options] [Discuss in forum] Newton Pascal Watt |
Q25 ⇒ Which of the following is not the unit of work, energy and heat? kg m/sec [other wrong options] [Discuss in forum] kcal kWhr HP |
Q26 ⇒ Two non-collinear parallel equal forces acting in opposite direction constitute a couple [other wrong options] [Discuss in forum] balance each other constitute a moment constitute a resultant couple |
Q27 ⇒ In determining stresses in frames by methods of sections, the frame is divided into two parts by an imaginary section drawn in such a way as not to cut more than three members with unknown forces of the frame [other wrong options] [Discuss in forum] two members with unknown forces of the frame four members with unknown forces of the frame three members with known forces of the frame |
Q28 ⇒ The possible loading in various members of framed structures are compression or tension [other wrong options] [Discuss in forum] buckling or shear shear or tension all of the above |
Q29 ⇒ If a number of forces act simultaneously on a particle, it is possible to replace them by a single force [other wrong options] [Discuss in forum] not a replace them by a single force to replace them by a single force through C.G. to replace them by a couple |
Q30 ⇒ Which of the following do not have identical dimensions? Moment of a force and angular momentum [other wrong options] [Discuss in forum] Momentum and impulse Torque and energy Kinetic energy and potential energy |
Q31 ⇒ According to principle of transmissibility of forces, the effect of a force upon a body is the same at every point in its line of action [other wrong options] [Discuss in forum] maximum when it acts at the centre of gravity of a body different at different points in its line of action minimum when it acts at the C.G. of the body |
Q32 ⇒ Two coplanar couples having equal and opposite moments can not balance each other [other wrong options] [Discuss in forum] balance each other produce a couple and an unbalanced force are equivalent |
Q33 ⇒ The centre of percussion of the homogeneous rod of length L suspended at the top will be 2L/3 [other wrong options] [Discuss in forum] L/2 L/3 3L/4 |
Q34 ⇒ The unit of power in S.I. units is watt [other wrong options] [Discuss in forum] newton metre joule kilogram metre/sec. |
Q35 ⇒ Which of the following is not the unit of pressure? newton [other wrong options] [Discuss in forum] torr Pa mm of Hg |
Q36 ⇒ Which of the following is not a vector quantity Mass [other wrong options] [Discuss in forum] velocity acceleration force |
Q37 ⇒ The centre of gravity of a uniform lamina lies at the mid point of its axis [other wrong options] [Discuss in forum] the centre of heavy portion the bottom surface all of the above |
Q38 ⇒ A heavy string attached at two ends at same horizontal level and when central dip is very small approaches the following curve parabola [other wrong options] [Discuss in forum] catenary hyperbola elliptical |
Q39 ⇒ Forces are called concurrent when their lines of action meet in one point [other wrong options] [Discuss in forum] two points plane perpendicular planes |
Q40 ⇒ The weight of a body is due to gravitational force of attraction towards the centre of the earth [other wrong options] [Discuss in forum] centripetal force of earth gravitational pull exerted by the earth forces experienced by body in atmos-phere |
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