246 Wk1-Day3 SAQ's

1.       What is the advantage of keeping parts in logical sequence?

• 1. 1. To ensure correct order of assembly

  2. 2. To prevent damage or loss

  3. 3. To optimize space and resources

• 1. 1. To assemble quickly

  2. 2. To see all the parts at the same time

  3. 3. To make room for personal items

• 1. 1. To assemble in any order

  2. 2. To reduce damage and loss of parts

  3. 3. To optimize the space anything you need

Answer explanation

Re-assembling mechanical devices requires laying out component parts in a logical sequence for several reasons. For example:

1.Ensure the correct order of assembly.

2.   To prevent damage or loss of parts. 

3.   To optimize the use of space and resources. 

Why we need tensioning?

Answer explanation

Some of the benefits of tensioning chains are:

•It prevents the chain from slipping or sagging, which can cause loss of torque, speed, or alignment.

• It reduces the wear and tear of the chain and the sprockets, which can extend the service life and reduce the maintenance costs.

It avoids the risk of chain breakage or failure, which can cause damage to the device or injury to the operator.

How do you repair/fix excessive movement or clearance in equipment?

This has more than one correct answer.

• By ensuring the tension and alignment is correct

• By letting it run longer to wear more so it fits better

• By tightening or replacing loose or broken fasteners

• By changing the system for a new one no matter what the cost

Answer explanation

Excessive movement or clearance of component parts can be caused by various factors, such as:

•Improper installation or assembly of the parts

•Wear or damage of the parts due to friction, corrosion, impact, or fatigue

•Thermal expansion or contraction of the parts due to temperature changes

•Loosening or stretching of the fasteners or connectors that hold the parts together

•Deformation or distortion of the parts due to stress, load, or impact

•Difficulty or failure in controlling or adjusting the parts or the system

Shims or packing are thin pieces of material that are used to fill small ____ or spaces between two objects that are very close together

Answer explanation

Shims or packing are thin pieces of material that are used to fill small gaps or spaces between two objects that are very close together.

Shims or packing can also provide support, level, or reduce wear and noise between parts that are subject to external forces, such as vibration, temperature changes, or dynamic loads

What does DTI mean in relation to precision instruments?

• Digital Tension Identifier

• Dedicated Test Installer

• Digital Test Indicator

• Digital Test Inventor

Answer explanation

A Dial Test Indicator, also known as a DTI is a precision measuring instrument used in engineering to assess small deviations on the surface of rotating components.

These can be used to identify wear and misalignment of a shaft.

Organize these options into the right categories

Groups:

(a) Standard measuring tools

,

(b) Precision measuring tools

• 
• 
• 
• 
• 
• 

The micrometer on the left is measuring at 2.4mm

• True
• False

What is this precision tool and what is it used for?

Answer explanation

Engineering protractors are tools used to measure and set angles accurately in various engineering and technical applications. These protractors come in different designs to suit specific needs and provide precise angle measurements. 

A ------ ----- is a precision measuring tool used to measure the gap between two objects.

Answer explanation

Feeler gauge is a precision measuring tool used to measure the gap between two objects.

Gauge sets typically include a range of blades with varying thicknesses, allowing for precise measurements within a specific range.

Organize these options into the right categories

Groups:

(a) Consumable

,

(b) Multi use

• O'rings

• Valves

• Bearings

• Hoses

• Seals

• Gasket

Answer explanation

Some components and parts are consumable and are only designed to be used once. When reassembling the component, these parts must not be re-fitted.