Theory of Machines: Mechanics of Machines

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What is the study of mechanisms and how they work known as?
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The study of mechanisms and their functioning is known as kinematics.
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What is a degree of freedom in the context of machines?
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Degree of freedom refers to the number of independent movements allowed to a body or system.
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What are the two main types of motion in machines?
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The two main types of motion are translational and rotational motion.
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Define a 'kinematic pair'.
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A kinematic pair is a connection between two components allowing relative motion, like hinges or sliders.
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What factors determine the mechanical advantage of a machine?
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Mechanical advantage is determined by the ratio of output force to input force.
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What is the principle of a lever in simple machines?
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A lever amplifies an input force to provide a greater output force, based on its fulcrum position.
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What is the function of a cam in a machine?
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A cam converts rotary motion into linear motion, often for driving a follower.
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How does a wheel and axle simple machine work?
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A wheel and axle amplify force by allowing rotational movement where the larger wheel turns with more force than applied on the smaller axle.
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What is velocity ratio in the context of a machine?
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Velocity ratio is the ratio of input speed to output speed in a machine.
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Name one application of belt drives in machines.
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Belt drives are used in conveyor systems to transfer rotational motion from one pulley to another.
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What distinguishes a four-bar linkage system?
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A four-bar linkage system comprises four rigid links interlinked to control motion in constrained paths.
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What is the role of a flywheel in machinery?
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A flywheel stores rotational energy to smoothen the output of power sources.
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What is meant by 'gear ratio'?
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Gear ratio is the ratio of the number of turns the driven gear make to those of the driving gear.
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What are the primary components of a crankshaft?
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The main components include the crankpins, counterweights, and main journal.
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Define 'coupling' in mechanical systems.
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Coupling connects two shafts together for the purpose of transmitting power.
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