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30問 • 1年前

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What branch of engineering studies the relative motion between different parts of a machine, and the forces acting on them?

Theory of Machines

What is the basic element in the study of machine movement?

Relative motion

What is the correct definition of relative motion in the theory of machines?

Movement relative to a fixed position

What is the difference between velocity analysis and dynamic analysis in the theory of machines?

Dynamic analysis is concerned with forces and moments

What element is used to convert rotary motion into rectilinear motion in the theory of machines?

Piston

It is deals with the relative motion between the various parts of the machines, without regard to forces.

Kinematics

It is deals with the forces and their effects, while acting upon the machine parts in motion

Dynamics

It is deals with the inertia forces which arise from the combined effect of the mass and motion of the machine parts.

Kinetics

It is deals with the forces and their effects while the machine parts are at rest. The mass of the parts is assumed to be negligible.

Statics

three basic kinematic variables:

position, Velocity, Acceleration

one which does not undergo any deformation while transmitting motion

A rigid link

which is partly deformed in a manner not to affect the transmission of motion

A flexible link

one which is formed by having a fluid in a receptacle and the motion

Fluid link

What branch of Engineering-science deals with the study of relative motion between the various parts of a machine and the forces which act on them?

Theory of Machines

Which type of quantity deals with position, displacement, rotation, speed, velocity, and acceleration?

Kinematics

Which kinematic variable refers to the study of motion without regard for the forces causing the motion or the description of motion?

Kinetic Energy

According to Grashof's law, what should be the sum of the shortest and longest link lengths in a four bar mechanism?

Less than the sum of the remaining two link lengths

What type of link is one that does not undergo any deformation while transmitting motion?

Rigid link

What is the name for a kinematic chain that contains two turning pairs and two sliding pairs?

Double Slider Crank Chain

How many degrees of freedom (DOF) does a rigid body in space have?

6 DOF

What is the term for a device that transforms motion to some desirable pattern and typically develops very low forces and transmits little power?

Mechanism

What is the classification of kinematic pairs that is based on the type of closure between the elements?

Open pair

What is the term for a mechanism with more than four links?

Compound Mechanism

Which type of motion describes a simultaneous combination of rotation and translation?

Complex Motion

What is the term for an assemblage of resistant bodies having no relative motion between them and meant for carrying loads with straining action?

Structure

According to the Theory of Machines, what is the main reason why the knowledge of relative motion between the various parts of a machine is essential for an engineer in designing?

To design various parts

What is the unit of mass in the fundamental units system?

Kilogram (Kg)

What is the definition of a mechanism?

A device that transforms motion to desirable patterns

Kinetic energy is the energy of an object due to is:

motion

Linear motion can be described by:

Displacement, velocity, and acceleration