---------- deals with mechanics of rigid body and study of external forces and their effects on rigid body
------- is the study of internal resisting forces developed in a deformable body under the action of external forces
-------- branch of a mechanics which deals with the study of forces on a body which is at rest
The study of forces and the displacement of bodies, without addressing the cause of movement is The forces, whose lines of action lie on the same plane, are known asThe opposing force ,which acts in the opposite direction of the movement of the body is---------The force of friction depends upon the ------------- of the surfaces
-------- friction is also called as kinetic friction
?=tan ? =F/R in the given equation what does ‘?’ indicate------ is measure of an object's resistance to changes to its rotation is the inertia of a rotating body with respect to its rotationIf the sum of the clockwise moments is equal to the sum of the anticlockwise moments is calledParallel axis theorem formula is given by----------- is called second moment of massMoment of inertia of a rectangular cross section about N.A isThe dynamics which deals with the problems without referring to the forces causing the motion of the body is termed asThe dynamics deals with the problems with referring to the forces causing the motion of the body is termed as In -------- motion orientation of body never changesIn ---------motion, no two points have same linear velocity or linear acceleration even they have same angular velocity and angular acceleration.In a body if the relative positions of any two particles in it do not change under the action of the forces--------- is defined as the maximum internal resistance forces (stress) that can a material with stand without any failure
-------- the properties of the material at any given point the properties of given material are same in all direction
-------- is the ability of a material i.e. the resistance against deformationFind the coefficient of friction if F=7N and R=14NThe stress based on actual area of cross section during tension stage of a mild steel specimen is calledWhich of the following is considered as a true characteristic yield stress for mild steelFor mild steel the lower yield points more significant then upper yield point becauseThe gauge length to be used for conduction of tension test is generally function of The yield stress of a twisted bar as compared to an ordinary mild steel bar is nearly Poisson's ratio is given as
The ratio of young’s modulus to modulus of rigidity for a material having poisson’s ratio 0.2 is The relation between the three elastic constants is For engineering materials, poisson’s ratio lies betweenThe relation between young’s modulus and bulk modulus is
Twisting moment is a moment applied in the plane of cross section actingWhen a shaft is subjected to pure twisting the type of stress developed in the shaft is In a shaft subjected to pure twist the maximum shear stress will be at
For transmitting same power all properties remaining same between a solid shaft and hollow shaftA long shaft of diameter d is subjected to twisting moment T at its ends. The maximum normal stress acting at its cross section is equal toA ------- is a device used to connect two shafts together at their ends for the purpose of transmitting power----------is the main use is to convey power to the wheels of a vehicleIn power transmission formula i.e. P=T.w, --------- stands for w The shape of S.F.D for a cantilever subjected to a couple at its free end isThe bending moment in beam is maximum whereThe point of contra-flexure are the point whereThe shape of bending moment diagram for a uniform cantilever beam carrying a uniformly distributed load over its lengthThe shape of bending moment diagram for a simply supported beam carrying point load at its center.A portion of a beam between two sections is said to be in pure bending when there is Curvature of a beam is equal to A rectangular section beam is subjected to a bending moment M. if the depth of the section is constant, then its width will vary as In a Prismatic beam under the action of pure bendingA beam is said to be uniform strength whenThe ratio of average shear stress to maximum shear stress in a beam of square cross-section is The ratio of maximum shear stress developed in a beam of rectangular section to that of the average shear stress isThe shear stress at any section at a distance ‘y’ from neutral axis(N.A) is given byThe shape of the shear stress distribution diagram for a rectangular beam is A rectangular beam of 100mm wide is subjected to maximum shear force of 50kN,the corresponding maximum shear stress being 3N/mm2.The depth of the beam is equal toThe flexural strength of a beam depends up on
Which of the following section is the most efficient in carrying momentFlexural strength formula is valid only forA steel bar of 3t thickness is cut horizontally in two pieces of t & 2t respectively, the maximum flexural stress will be in the ratio In flexural theory of beams, the neutral axis has the following characteristicsThe factor of safety for brittle materialsThe factor of safety for ductile materialsThe design, where designer starts with the existing design, but the final product is different
CAD design means
The ability of a material to absorb a large amount of energy is---------- decreases resistance of a material to repeated reversals of stressWhich of the following is primarily responsible for toughness of steelAs compare to mild steel, high carbon steel has less A slow and permanent deformeting of body due to a constant stress at high temperature for long period is called
Guest’s theory In static loading, stress concentration is more serious inIn cyclic loading, stress concentration is more serious inSaint Venant’s theory is not generally used because A solid shaft transmits a torque T. The allowable shear stress is T. The diameter of the shaft isThe material suitable for the belts used in agricultural equipment isThe tension in the slack side of the belt is ------- the tension in the tight side of the beltAll stresses produced in a belt areIf belt thickness is relatively large for the size of pulley,
Which one of the following is anti friction bearingThe rolling contact bearings are known as Most common oil used in sealed bearings is
A hole is provided at the top of housing Journal bearing for
A spring used to absorb maximum shocks and vibrations among the following isWhich of the following spring is used in a mechanical wrist watchA leaf spring in automobiles is used to In leaf spring the longest leaf is known as The spring mostly used in clocks isWhen a helical compression spring is subjected to an arial compressive load, the stress induced in the wire isSpring index of a helical spring is given by when D= dia of spring D= wire diameter
Reflecting in a helical spring, where N =no of active turns G =Shear modules of elasticity
Two coiled springs each having stiffness k are placed in parallel. The equivalent stiffness is In leaf spring, the sequence of arrangement of leaves of different lengths is