Mechanical Principles and Tool Applications Explained

Mechanical Tool Usage Facts

A torque wrench is used to tighten a bolt when: The exact amount of force on the bolt has to be measured.

Taps and Dies Function

Taps and dies are tools used to: Cut threads for nuts and bolts.

Metal Pattern Creation

The type of pattern made on metal is created by a process called: Knurling.

Nail Sizing System

Which of the following uses a penny system to specify its size? Finishing nail.

Chimney Leak Prevention

What is placed around a chimney to prevent leaks? Flashing.

Sheet Metal Bending

Which tool is used to bend large sections of sheet metal? Brake.

Fastening to Sheet Metal

Self-tapping screws are primarily used when fastening objects to: Sheet metal.

Concrete Reinforcement

Anchor bolts are used to hold the: Rebar to the concrete.

Lumber Cutting Precision

The best saw for accurately cutting 3 inches off the length of a 2 x 8 x 18 inch piece of lumber is: Radial arm saw.

Paraffin Application

Paraffin is commonly used to: Insulate windows.

Gear System Failure

Gear A is the driving gear. If all the teeth are stripped off of Gear B, which gears will turn?: Gear A.

Rod and Axle Movement

A ball is attached to one end of a rod AB, and the other end is attached to a vertical rotating axle as shown. The resulting motion is: Become 90 degrees.

Pulley Speed Relationship

The drive pulley always turns: Faster than pulleys A or C, but not pulley B.

Hanging Weight Calculation

Four weights are tied together and hung from the ceiling. The total weight is: 60 pounds.

Loosening a Rusty Nut

What would you tell a person trying to loosen the rusty nut with the wrench?: Move your hand farther from the nut.

Friction Forces Principle

It is true that frictional forces: Always oppose forces producing motion.

Seatbelt Safety and Physics

A car stops suddenly. Why are the passengers thrown forward against their seatbelts?: The inertia of each passenger.

Balancing a Pulley System

In this pulley system, what force must be applied to balance the 10 pound weight? 10 lbs.

Water Tank Pressure Dynamics

The illustration shows a water tank made of wood planks and reinforced. Observation: The water pressure pushing against the sides of the tank is greater near the bottom.

Centrifugal Force Direction

Centrifugal force is the: Upward (Note: This answer seems context-dependent or potentially incorrect based on standard physics definitions, but retained as per instruction to not cut content).

Gear Rotation Direction

Which wheels or gears turn in the same direction as A?: E only.

Concrete Slab Spacing

Spaces are placed between slabs of concrete in order to: Allow for expansion and contraction.

Interconnected Gear Movement

If part A moves to the left, gear C will turn: In direction 1.

Belt and Drum Friction

A bell passes over a drum and its ends are connected to springs. If the drum rotates in the direction shown and there is friction between the drum and the belt, then: Both springs will get longer.