MMET 301 Exam 3 Questions With
Correct Answers
Couplings - CORRECT ANSWER✔✔-connects two shafts to transmit
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power. it allows for some misalignment or shaft movement
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Coupling Classification - CORRECT ANSWER✔✔-ridged
| | | |
- doesn't allow for misalignment or shock dampening
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- common in CNC Systems & pumps
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flexible |
- does allow for misalignment or shock dampening
| | | | | | |
- common in conveyors and compressors
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When to use rigid vs flexible couplings - CORRECT ANSWER✔✔-- Rigid in
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good in low rotational speed environments & accurately aligned shafts
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- flexible couplings alleviate shock by providing transfer of power
| | | | | | | | |
through springs or to absorb some of the vibration in the coupling
| | | | | | | | | | | |
Types of shaft misalignments - CORRECT ANSWER✔✔-- angular - shafts
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meet at an angle
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, - parallel/radical - shafts offset but parallel
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- axial - end movement during operation
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correcting shaft misalignment - CORRECT ANSWER✔✔-- Straight edge
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alignment
|
- dial indicators
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- laser shaft
| |
More about Rigid couplings - CORRECT ANSWER✔✔-- use when there is
| | | | | | | | | |
perfect shaft alignment is guaranteed; common in shaft extensions in
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gear boxes & fixed speed compressors
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-Types of rigid couplings: Flange - good for high capacity Torque; Sleeve -
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simple, low cost; Ribbed/clamp - easy to install no wear parts
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More about flexible couplings - CORRECT ANSWER✔✔-They absorb
| | | | | | |
vibration and accommodate misalignment. Advantages include:
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reduced maintenance, extended bearing and seal life, and improved
| | | | | | | | |
machine safety
| |
Types of flexible couplings:
| | | |
1. Gear: High Torque, lubricated, high angular mis alignment
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2. Chian: durable, forgiving
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3. Jaw: elastomer insert, vibration control
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4. Shear Donut: Absorbs high shocks
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Correct Answers
Couplings - CORRECT ANSWER✔✔-connects two shafts to transmit
| | | | | | |
power. it allows for some misalignment or shaft movement
| | | | | | | | |
Coupling Classification - CORRECT ANSWER✔✔-ridged
| | | |
- doesn't allow for misalignment or shock dampening
| | | | | | |
- common in CNC Systems & pumps
| | | | | |
flexible |
- does allow for misalignment or shock dampening
| | | | | | |
- common in conveyors and compressors
| | | | |
When to use rigid vs flexible couplings - CORRECT ANSWER✔✔-- Rigid in
| | | | | | | | | | |
good in low rotational speed environments & accurately aligned shafts
| | | | | | | | | | |
- flexible couplings alleviate shock by providing transfer of power
| | | | | | | | |
through springs or to absorb some of the vibration in the coupling
| | | | | | | | | | | |
Types of shaft misalignments - CORRECT ANSWER✔✔-- angular - shafts
| | | | | | | | |
meet at an angle
| | | |
, - parallel/radical - shafts offset but parallel
| | | | | |
- axial - end movement during operation
| | | | | |
correcting shaft misalignment - CORRECT ANSWER✔✔-- Straight edge
| | | | | | |
alignment
|
- dial indicators
| | |
- laser shaft
| |
More about Rigid couplings - CORRECT ANSWER✔✔-- use when there is
| | | | | | | | | |
perfect shaft alignment is guaranteed; common in shaft extensions in
| | | | | | | | | |
gear boxes & fixed speed compressors
| | | | | |
-Types of rigid couplings: Flange - good for high capacity Torque; Sleeve -
| | | | | | | | | | | |
simple, low cost; Ribbed/clamp - easy to install no wear parts
| | | | | | | | | | |
More about flexible couplings - CORRECT ANSWER✔✔-They absorb
| | | | | | |
vibration and accommodate misalignment. Advantages include:
| | | | | |
reduced maintenance, extended bearing and seal life, and improved
| | | | | | | | |
machine safety
| |
Types of flexible couplings:
| | | |
1. Gear: High Torque, lubricated, high angular mis alignment
| | | | | | | |
2. Chian: durable, forgiving
| | |
3. Jaw: elastomer insert, vibration control
| | | | |
4. Shear Donut: Absorbs high shocks
| | | | | |
