Theory of Machines: Mechanics of Machines

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What is the study of mechanisms and how they work known as?

The study of mechanisms and their functioning is known as kinematics.

What is a degree of freedom in the context of machines?

Degree of freedom refers to the number of independent movements allowed to a body or system.

What are the two main types of motion in machines?

The two main types of motion are translational and rotational motion.

Define a 'kinematic pair'.

A kinematic pair is a connection between two components allowing relative motion, like hinges or sliders.

What factors determine the mechanical advantage of a machine?

Mechanical advantage is determined by the ratio of output force to input force.

What is the principle of a lever in simple machines?

A lever amplifies an input force to provide a greater output force, based on its fulcrum position.

What is the function of a cam in a machine?

A cam converts rotary motion into linear motion, often for driving a follower.

How does a wheel and axle simple machine work?

A wheel and axle amplify force by allowing rotational movement where the larger wheel turns with more force than applied on the smaller axle.

What is velocity ratio in the context of a machine?

Velocity ratio is the ratio of input speed to output speed in a machine.

Name one application of belt drives in machines.

Belt drives are used in conveyor systems to transfer rotational motion from one pulley to another.

What distinguishes a four-bar linkage system?

A four-bar linkage system comprises four rigid links interlinked to control motion in constrained paths.

What is the role of a flywheel in machinery?

A flywheel stores rotational energy to smoothen the output of power sources.

What is meant by 'gear ratio'?

Gear ratio is the ratio of the number of turns the driven gear make to those of the driving gear.

What are the primary components of a crankshaft?

The main components include the crankpins, counterweights, and main journal.

Define 'coupling' in mechanical systems.

Coupling connects two shafts together for the purpose of transmitting power.