Constraints
Linking
Motion Transmission
Motion Transformation
Electrical functions
100
What type of constraint occurs when an object is being pulled apart?
Tension
100
What is the difference between direct and indirect links?
Direct links dont need a third (linking) component, indirect does.
100
What type of motion do we see in all examples of motion transmission systems?
rotational
100
What is the piece that is rotating called?
cam
100
Name an electrical power source
battery, photovoltaic cell, outlet
200
Give an example of an object subject to torsion.
answers can vary
example: twisting a rag
200
How do flexible links differ from rigid links?
The material in a flexible link can be deformed, the material in a rigid link cannot be deformed
200
What type of component is a pulley in a belt and pulley systems?
Hint: Think about the 3 components in any mechanical system
Intermediate
200
What type of motion does the slider in a slider crank system do?
translational
200
What is the role of a wire in an electrical circuit?
Conduction
300
What type of constraint does a snow shelter/tempo experience when snow gets on it?
deflection
300
Identify the linking characteristics between the plastic and metal parts of a chair
indirect, rigid, complete, non-removable
300
Which direction will the gear furthest to the right rotate if the first gear rotates clockwise? 
clockwise
300
What type of motion does the pinion in a rack and pinion system do?
rotational
300
What is the role of the casing around a wire?
Insulation
400
What type of constraint does a bridge feel during heavy traffic
compression
400
Identify the linking characteristics of a plastic water bottle and its cap.
direct, rigid, removable, complete
400
Which direction will the deflection pulley rotate if the crank rotates clockwise
counter-clockwise
400
What type of motion transformation system is in this bicycle bell?
rack and pinion
400
What is the electrical function of the heating element in a toaster?
transformation of energy
500
Name all the constraints and demonstrate them with your hands
Compression, tension, torsion, deflection, shearing
500
Identify the linking characteristics of the 2 blades of scissors
indirect, rigid, partial, non-removable
500
What are the differences in a belt and pully system and a chain and sprocket system? (tell me multiple)
Chain and sprocket uses a gear with teeth, belt and pulley uses gears without teeth.
Chain and sprocket has a chain instead of a pulley.
500
In a cam and follower system, the cam is the driver and the follower is the driven. Why is a cam and follower system not reversible?
The follower cannot act like a driver and push against the cam. The cam will not move/rotate fully.
500
How do breakers and fuses help protect electrical circuits? Explain how they work and what they prevent from happening
When the current intensity is too high, the fuse will break / the breaker will switch off. They prevent electrical fires.