The picture below shows a ram type of baler - NSC Agricultural Technology - Question 5 - 2021 - Paper 1

1. Screens must appear neat and be free from damage to ensure visibility.
2. They should be removable and easily replaceable for maintenance and safety checks.
3. The screens must have sufficient strength to withstand the impact of objects without tearing.

1. Warning signs to alert operators of potential hazards.
2. Slip clutch mechanisms to prevent damage during overload.
3. Shear bolts that break under excessive force, preventing greater harm.
4. A ram stop safety mechanism to prevent the ram from moving when not activated.

1. Ensure that no one rides on top of the harvester for safety.
2. Always check and clear any obstacles in the work area before operating the machine.
3. Remain alert and respond quickly to warning signals or alarms indicating a malfunction.
4. Regularly inspect the machine for mechanical issues and perform maintenance while ensuring the machine is powered down.

Double-helical gear.

It cannot be used in gearboxes of cars because it cannot mesh from the side.

1. Sturdy construction for durability.
2. Availability of replaceable wear parts to ensure longevity.
3. Properly fitted rotor housing to avoid leakage.
4. Sufficiently sized feed aperture for the type of materials being processed.

1. It allows for even distribution of mass and reduces vibrations.
2. Enhances the effectiveness of the pulverization as the feed flows smoothly.
3. Prevents operational hazards such as tipping or instability during use.

1. Ensuring the anchor bolts are secured firmly to avoid disconnection.
2. Checking that the universal joints are properly lubricated for smooth operation.
3. Verifying that the driving shaft is as straight as possible to avoid misalignment issues.

1. The rear tyres of a tractor are better suited to carry the extra weight, providing better stability.
2. It minimizes the risk of the tractor overturning due to the lower center of gravity.

1. Two lifting arms.
2. A top link.
3. Two stabilizing chains or arms.

The automatic depth control mechanism is activated by the sensitivity element of the ploughing depth. It adjusts the depth based on varying soil conditions, ensuring that the plough does not penetrate too deeply, which can cause soil disturbance, or too shallowly in hard soils, maintaining optimal working conditions.

Bearings are essential to reduce wear on moving parts, facilitate smooth rotation, and minimize overheating, which can lead to pump failure.

Applying appropriate lubricants regularly to ensure smooth operation and reduce friction.

1. Sliding gearbox.
2. Constant mesh gearbox.
3. Synchronized gearbox.