Podcast
Questions and Answers
Which of the following is not a function of a solid coupling?
Which of the following is not a function of a solid coupling?
What is NOT an important outcome of preventative maintenance of belt systems?
What is NOT an important outcome of preventative maintenance of belt systems?
Wearing loose clothing near mechanical power transmission equipment can cause you to get pulled into the equipment.
Wearing loose clothing near mechanical power transmission equipment can cause you to get pulled into the equipment.
True
What type of lubrication systems cannot be used to dispense oil?
What type of lubrication systems cannot be used to dispense oil?
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In a flexible jaw coupling, power is transmitted from the driving jaw to the driven jaw by?
In a flexible jaw coupling, power is transmitted from the driving jaw to the driven jaw by?
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Lubricants provide six general applications for machines, which of the following is not a general function?
Lubricants provide six general applications for machines, which of the following is not a general function?
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What coupling is used to combine two short shafts to replace a long straight shaft?
What coupling is used to combine two short shafts to replace a long straight shaft?
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Which of the following is the best bearing type to use when the load is directed along the shaft?
Which of the following is the best bearing type to use when the load is directed along the shaft?
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What would cause increased vibration in a coupling?
What would cause increased vibration in a coupling?
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Pitch is a method of expressing the measurement between:
Pitch is a method of expressing the measurement between:
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Which of the following is a purpose for mechanical power transmission?
Which of the following is a purpose for mechanical power transmission?
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What method is used to measure motor shaft speed (RPM)?
What method is used to measure motor shaft speed (RPM)?
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Which of the following is not a method for temperature mounting a bearing shaft?
Which of the following is not a method for temperature mounting a bearing shaft?
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When using a chain puller, the jaws are opened and closed by?
When using a chain puller, the jaws are opened and closed by?
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The concepts used to calculate speed and torque of multi-gear drives can also be applied to compound gears with which of the following changes?
The concepts used to calculate speed and torque of multi-gear drives can also be applied to compound gears with which of the following changes?
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In a four gear system, if the second gear is rotating counterclockwise, what direction is the fourth gear turning?
In a four gear system, if the second gear is rotating counterclockwise, what direction is the fourth gear turning?
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The major feature of a split sleeve coupling is?
The major feature of a split sleeve coupling is?
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Which of the following is part of a high torque synchronous or timing belt drive system?
Which of the following is part of a high torque synchronous or timing belt drive system?
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Which of the following is a cause for a cracked pulley bushing in a v-belt drive system?
Which of the following is a cause for a cracked pulley bushing in a v-belt drive system?
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Which of the following is not true about a Material Safety Data Sheet?
Which of the following is not true about a Material Safety Data Sheet?
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Which of the following would be the best replacement for a one horsepower motor with a motor rated in watts?
Which of the following would be the best replacement for a one horsepower motor with a motor rated in watts?
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What is the safest way to install a chain in a roller chain drive system?
What is the safest way to install a chain in a roller chain drive system?
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Which of the following is the least accurate method of shaft alignment?
Which of the following is the least accurate method of shaft alignment?
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Which of the following information would you need to calculate the gear ratio of a gear drive system?
Which of the following information would you need to calculate the gear ratio of a gear drive system?
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A chain code of 50-4 indicates a chain that is ____ inch pitch chain.
A chain code of 50-4 indicates a chain that is ____ inch pitch chain.
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The different types of lubricating greases are equally determined by their polymers that are utilized for keeping?
The different types of lubricating greases are equally determined by their polymers that are utilized for keeping?
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What installation procedure that will shorten the life of the belt?
What installation procedure that will shorten the life of the belt?
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What instrument would give the best results to align a rigid coupling?
What instrument would give the best results to align a rigid coupling?
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A fractional HP V-BELT drive is intended for?
A fractional HP V-BELT drive is intended for?
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Which of the following is not a type of shaft key?
Which of the following is not a type of shaft key?
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A belt drive system has a 6 inch pitch diameter drive pulley and 12 inch pitch diameter driven pulley connected to a motor running at 1HP and 1000 RPM, what is the output speed?
A belt drive system has a 6 inch pitch diameter drive pulley and 12 inch pitch diameter driven pulley connected to a motor running at 1HP and 1000 RPM, what is the output speed?
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Study Notes
Mechanical Power Transmission
- Solid couplings connect aligned shafts, not offset ones.
- Preventive maintenance of belt systems aims to promote safety, not solely to satisfy OSHA.
- Loose clothing near machinery can lead to entanglement and serious injury.
Lubrication Systems
- Hand pack systems cannot dispense oil, unlike other types.
- Lubricants avoid contamination and reduce friction, promoting efficient machine operation.
Coupling Types
- Flexible jaw couplings transmit power through spiders or elastomers located between jaws.
- Rigid couplings are used to join short shafts, replacing longer straight shafts.
- Thrust bearings are ideal for loads directed along the shaft.
- Split sleeve couplings allow for easy maintenance without repositioning shafts.
Gear Systems
- When calculating multi-gear drives, consider the gear ratio of all gears on the same shaft.
- In a four-gear setup, rotational direction is impacted by gear interaction; a counterclockwise second gear results in a counterclockwise fourth gear.
- Gear ratios are calculated using pitch diameters of driver and driven gears.
Chain and Belt Systems
- Chain pullers have jaws operated by a dial on top for easy handling.
- Proper installation techniques for chain drive systems include using chain tensioners to avoid damaging the belt lifespan.
- A 50-4 chain code indicates a chain with a pitch of 0.625 inches.
- A V-belt drive system comprising a 6-inch drive pulley and a 12-inch driven pulley results in a 500 RPM output speed.
Safety and Maintenance
- Important to follow installation procedures to extend belt life; forcing belts onto pulleys is detrimental.
- The least accurate shaft alignment method is the straight edge and feeler gauge technique.
- Material Safety Data Sheets (MSDS) should be accessible beyond HR departments; they are essential for worker safety.
Correct Terminology
- A one horsepower motor equates to 750 watts.
- Various types of lubricating greases protect against contaminants based on their polymer composition.
Belt Drive Applications
- Fractional horsepower V-belt drives cater to light-duty applications.
- Proper pulley installation is crucial, as improper practices can lead to damage like cracked pulley bushings.
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Description
Test your knowledge with these flashcards focused on mechanical engineering concepts from Mech 2. Each card provides questions about solid couplings, preventative maintenance, safety measures, and lubrication. Challenge yourself to understand essential mechanical functions and practices.
