Name and describe the operation of any one of the mechanisms shown. (i) (ii) Describe any three of the following: (i) The advantages of toothed pulley belts; (ii) The operation and one application of a solenoid; (iii) One application for a resistor; (iv) One mechanical device used to convert rotary motion into linear motion; (v) A pneumatic flow regulator. The computer-controlled machine shown moves the cutter in the directions shown. Describe clearly, with the aid of diagrams, suitable drive mechanisms to control the cutter movement.

Leaving Cert Engineering Mechanisms: Name and describe the operation

Name and describe the operation of any one of the mechanisms shown - Leaving Cert Engineering - Question 8 - 2013

Question 8

Name and describe the operation of any one of the mechanisms shown. (i) (ii) Describe any three of the following: (i) The advantages of toothed pulley be... show full transcript

Worked Solution & Example Answer:Name and describe the operation of any one of the mechanisms shown - Leaving Cert Engineering - Question 8 - 2013

Step 1

Name and describe the operation of any one of the mechanisms shown.

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Answer

The described mechanism is the Universal Joint. The drive rotates the spline shaft of the universal joint which transmits motion through to the output shaft. This allows motion to be transmitted in a line or at an angle. It is commonly used in tractor machinery.

Step 2

Describe any three of the following: (i) The advantages of toothed pulley belts;

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Answer

Toothed belts are much less prone to slippage. They can be used as a drive for timing engines, providing a quieter operation than chain drives.

Step 3

Describe any three of the following: (ii) The operation and one application of a solenoid;

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Answer

A solenoid is an electrical device where a coil of wire, wound around a soft iron core, is energized. The magnetic force induced by the current pulls the bar towards the center. A common application is in controlled entry door locks.

Step 4

Describe any three of the following: (iii) One application for a resistor;

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Answer

A resistor is used to limit current flow in electronic circuits. It plays a crucial role in protecting components by ensuring that the current does not exceed safe levels.

Step 5

Describe clearly, with the aid of diagrams, suitable drive mechanisms to control the cutter movement.

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Answer

The machine uses a rack and pinion system to move the cutter left and right as well as to raise and lower it. The rack is driven by the pinion, which is powered by an electric motor, providing precise control of the cutter's position.

Name and describe the operation of any one of the mechanisms shown - Leaving Cert Engineering - Question 8 - 2013

Worked Solution & Example Answer:Name and describe the operation of any one of the mechanisms shown - Leaving Cert Engineering - Question 8 - 2013

Name and describe the operation of any one of the mechanisms shown.

Describe any three of the following: (i) The advantages of toothed pulley belts;

Describe any three of the following: (ii) The operation and one application of a solenoid;

Describe any three of the following: (iii) One application for a resistor;

Describe clearly, with the aid of diagrams, suitable drive mechanisms to control the cutter movement.

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