MDE 20 End of Unit Quiz

MDE 20 End Of Unit Quiz

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Question 7:
What action should be taken if abnormal noise is detected during a gearbox inspection?

D) Replace the gearbox immediately

B) Increase the operating speed to see if the noise persists

C) Investigate and repair the source of the noise

A) Continue operation until the next scheduled maintenance

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Question 2:
Which of the following is a common visual inspection technique used for a gearbox?

A) Checking the oil level

D) Adjusting the gear mesh

C) Inspecting for oil leaks and contamination

B) Measuring the temperature of the gearbox

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Question 5:
What fault might be observed if gear teeth exhibit a jagged, uneven surface?

A) Gear tooth wear

C) Gear tooth chipping

B) Gear tooth spalling

D) Gear tooth flaking

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Question 4:
What tool is often used to measure the backlash in a gearbox?

C) Thermometer

B) Dial gauge

A) Micrometer

D) Tachometer

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Question 5:
Which of the following is an advantage of helical gears in terms of their load distribution?

C) No change in load distribution

A) Less efficient load distribution

D) Higher localized stress

B) More uniform load distribution

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Question:
How may gearbox oil become contaminated with water?

A) Through leaks in the cooling system

D) Through the use of low-quality lubricants

C) By condensation forming inside the gearbox

B) By direct exposure to rain or sea spray

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Question 5:
Which of the following is NOT a benefit of supplying lubricating oil to main reduction gearing before it rotates?

D) Minimizing initial friction

A) Preventing metal-to-metal contact

B) Reducing startup noise

C) Improving gear tooth profile

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Question 2:
What is a typical sign of gear tooth scuffing?

B) Presence of cracks and chips on the gear surface

C) Rough, burnt appearance on the gear teeth

A) Uniform wear across the gear teeth

D) Excessive play between meshing gears

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Question 6:
Which of the following is a sign of gear tooth damage that should be noted during a gearbox inspection?

D) Excessive vibration during operation

A) Rust on the external surface

C) Discoloration of the gearbox oil

B) Cracks or chips on the gear teeth

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Question 4:
What advantage do helical gears have over spur gears in terms of operational noise?

A) Higher operational noise

B) Lower operational noise

C) Equal operational noise

D) No effect on operational noise

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Question 4:
With reference to reduction gearing, what role does the surface finish of gear teeth play in the efficiency of power transmission?

B) It has no significant impact on power transmission efficiency

D) It makes the gear easier to manufacture

C) It helps to minimize energy losses due to friction and improves efficiency

A) It affects the gear's color and appearance

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Question 5:
How does the use of oil sprayers impact the efficiency of main reduction gearing lubrication?

D) It simplifies the oil filtration process

B) It improves the oil film strength on gears

A) It increases the oil viscosity

C) It reduces the amount of oil needed

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