JSS 1 Intermediate Science Flashcards: Meaning, Types and Importance of Tool and Machine Maintenance

Question 1

What is maintenance?

Accepted Answer

the care and servicing of tools or machines to keep them working properly

Question 2

Maintenance carried out regularly to prevent failure is called ____ maintenance.

Accepted Answer

preventive

Question 3

Maintenance performed after a fault occurs is called ____ maintenance.

Accepted Answer

corrective

Question 4

Maintenance based on information about a machine’s condition is called ____ maintenance.

Accepted Answer

predictive

Question 5

Which is an example of preventive maintenance: lubricating moving parts on schedule, replacing a broken shaft, ignoring unusual noise, or using a cracked cable?

Accepted Answer

lubricating moving parts on schedule

Question 6

Replacing a snapped drive belt is an example of ____ maintenance.

Accepted Answer

corrective

Question 7

Monitoring vibration to estimate when a bearing will fail is ____ maintenance.

Accepted Answer

predictive

Question 8

The main purpose of lubrication is to reduce ____.

Accepted Answer

friction and wear

Question 9

Cleaning dust and swarf from a machine helps prevent ____.

Accepted Answer

blockage, overheating, and wear

Question 10

Regular maintenance improves workshop safety by ____.

Accepted Answer

finding and correcting faults before they cause accidents

Question 11

How does maintenance extend a machine’s service life?

Accepted Answer

It reduces avoidable wear and deterioration.

Question 12

A major economic benefit of maintenance is reduced ____.

Accepted Answer

repair cost and downtime

Question 13

Before maintaining an electrically powered machine, the first safety step is to ____.

Accepted Answer

switch off and isolate the power supply

Question 14

A cleaning material suitable for wiping oil and dirt from tools is a ____.

Accepted Answer

clean rag

Question 15

A brush is useful during maintenance for removing ____.

Accepted Answer

dust and loose debris

Question 16

Why should maintenance instructions from the manufacturer be followed?

Accepted Answer

They specify suitable procedures, intervals, and materials.

Question 17

A maintenance record should state the date, work done, and ____.

Accepted Answer

faults or parts that need attention

Question 18

Which is NOT good maintenance practice: inspecting cables, tightening loose fasteners, using the correct lubricant, or operating a machine with a missing guard?

Accepted Answer

operating a machine with a missing guard

Question 19

If a machine begins making an unusual noise, the operator should ____.

Accepted Answer

stop it safely and report or investigate the fault

Question 20

After cleaning and maintaining a tool, the final step is to ____.

Accepted Answer

inspect it and store it safely

Strong work.

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