couplings self test questions

Question 1

couplings are used to connect shafts that are end to end ?

Answer 1

true

Question 2

compressing couplings use keys to transfer torque between hubs and shafts ?

Answer 2

false
grip the shaft by using tapered sleeves in tapered hubs

Question 3

flange face couplings have male and female hubs?

Answer 3

true

Question 4

gear couplings with straight teeth are a good example of rigid couplings

Answer 4

false
gear couplings are mechanical flexible couplings

Question 5

rubber tire couplings can be clamped in place or may have rubber bonded to the coupling ?

Answer 5

false

Question 5

a rubber tire coupling can accommodate axial movement angular and offset alignment conditions ?

Answer 5

true

Question 6

the coupling that can accommodate the most offset misalignment is the single flexible disk ?

Answer 6

false

Question 7

a curved tooth gear coupling has both material and mechanical flexibility ?

Answer 7

false
just mechanical flexibility because of clearance between the teeth and shape of the teeth

Question 8

jaw and spider couplings are mainly used for high power drives that require no shock dampening

Answer 8

fasle
used on small to medium HP

Question 9

steel grip couplings and chain couplings require lubrication

Answer 9

true

Question 10

pin and rubber bushings can accomodate substation axial float?

Answer 10

true

Question 11

universal joins are best kept in accurate alignment for long service life

Answer 11

false

Question 12

single universal joints can only accomodate small angular misalignment

Answer 12

true

Question 13

constant velocity joints (cv joint)
are more versatile than universal joints

Answer 13

true

Question 14

fluid couplings have an out put member called an impeller

Answer 14

false
out put is the turbine
input is the impeller

Question 15

the speed of engagement on a centrifugal coupling can easily be changed ?

Answer 15

false

Question 16

fluid couplings have maximum vortex flow with in the coupling at start up

Answer 16

true

Question 17

dry shot couplings should ne filled with the correct level of hydraulic oil and never overfilled ?

Answer 17

false filled with heat treated steel shot

Question 18

the sheer pin in a shear pin coupling fails when the coupling is subject to overload or severe shock load ?

Answer 18

true

Question 19

floating shaft couplings are used to save space ?

Answer 19

false
used when drive components can not be located close to the driving motor

Question 20

when a machine needs to be held at rest or stopped quickly a brake wheel coupling is a good choice ?

Answer 20

true

Question 21

Misalignment is the greatest cause of coupling wear and destruction

Answer 21

true

Question 22

All coupling should be well lubricated after installation

Answer 22

fasle

Question 23

a flexible coupling that is hot after running for a few hours may have serious alignment problems

Answer 23

true

Question 24

true or false
Flexible couplings can be
mechanical flexible, material flexible and a combination of material and mechanical flexibility

Answer 24

true

Question 25

If you need a chain coupling for heavy loads and speeds up to 5000 rpm you would use a

Answer 25

silent chain coupling

Question 26

______on gear couplings help allow for more misalignment then straigth teeth. They are good for high torque and high rpm.

Answer 26

curved teeth

Question 27

_______ couplings are the easiest to install but you may have to install press or shrink fit couplings also. When heating couplings heat hubs to approximately _____ above Ambiant temperature for every 0,001”of interference per inch of hub diameter

Answer 27

clearance fit

180 f

Question 28

When removing a coupling hub make sure to heat the hub quickly and evenly . If done slowly the shaft will be heated and expand causing drag on the coupling. When removing any hub with a puller make sure to take out all set screws as they can be dragged across the shaft causing metal build up and stopping the hub from coming off.

Question 29

Make sure to use proper bolts and parts for all coupling replacements. This will help keep the coupling?

Answer 29

balanced