NOCTI Mechancial Systems

________ is a measurement of the force required to pull something such as a structural beam to the point where it breaks.

• hardness

• tensile strength

• elasticity

• ductility

What is the primary characteristic of torsion force?

• Twisting

• Compressing

• Pulling

Mechanical properties of materials involve a reaction to ____.

• chemicals

• an applied force

• another material

• weather

If the output (driven) gear is smaller than the input (drive) gear, the speed will

• increase
• be constant
• decrease
• there is not enough information

To move in a straight line

• rotary
• linear
• reciprocating
• oscillating

Identify the mechanical system in the picture:

• bevel gear

• rack and pinion

• worm and wheel

• cam and follower

Which simple machine converts rotational motion into linear

• Bevel gear

• rack and pinion

• Level

• Wedge

One of a pair of gears used to connect two shafts whose axes intersect.

• simple gear

• bevel gear

• shifting gear

• meshing gear

A pear-shaped disk with an off-center pivot point, used to change rotating motion into reciprocating motion.

• cam and mitchell

• cam and leader

• cam and follower

• belt and pulley

What 2 simple machine are the main components of a rollercoaster

• wedge & screw

• Lever & Pulley

• wheel & axle and inclined plane

• screw and wheel & axle