SACA /
304
/ /
Pneumatic
/ /
Troubleshooting
/ /
Blackboard
/ /
Exam Questions With Correct Answers
/ // // // //
Which //of //the //following //can //cause //slow //actuator //speed?
A. //Worn //cylinder //seals
B. //Worn //pressure //regulator //poppet
C. //Decrease //in //load
Worn //cylinder //seals
A(n) /
/__________ /
/shows //the //status //of //inputs //and //outputs //for //each //step //of //a //PLC's //program //sequence.
Sequence //chart
An //uneven //part //surface //can //cause //a //vacuum //cup //to //lose //its //seal //because //__________.
It //allows //air //to //enter //the //cup //reducing //the //amount //of //vacuum
Where //are //quick //exhaust //valves //installed //in //a //pneumatic //system?
Actuator //ports
Which /
/of /
/the /
/following //components, //when //failed, //is //least //likely //to //result //in //an //actuator //not //moving?
A. //DCV
B. //Actuator
,C. //Pressure //regulator
D. //FLow //control //valves //internal //check //valve
FLow //control //valves //internal //check //valve
Zero /
/pressure //at //a //branch //line //pressure //regulator //gauge //can //be //caused //by //all //of //these //faults
//EXCEPT //for?
A. //plantwide //air //system //is //off
B. //branch //line //shutoff //valve //is //closed
C. //filter //is //clogged
D. //partial //blockage //in //branch //line
partial //blockage //in //branch //line
If /
/newly /
/installed /
/vacuum /
/cups /
/are //damaging //the //material //being //lifted. //After //checking //supply //pressure //is //correct, //which
//of //the //following //is //the //next //step //you //should //do?
A. //Measure //pressure //at //vacuum
B. //Examine //material //for //an //uneven //surface
C. //Verify //that //cup //size //is //not //too //large
D. //Inspect //cups //for //cracks
Verify //that //cup //size //is //not //too //large
In /
/order /
/to //troubleshoot //a //PLC //controlled //pneumatic //machine //sequence //using //PLC //I/O //indicators,
//what //information //is //essential?
Sequence //chart
What //symptom //is //likely //to //occur //if //a //vacuum //generator //pressure //inlet //becomes //partially
//blocked?
decreased //vaccum //pressure
A //vacuum //switch //converts //a //sensed //pressure //into //a(n) //__________.
Electrical //signal
, A //partial //blockage //in //the //vacuum //generator //will //result //in //__________.
Low //vacuum //pressure
What //is //the //most //common //method //pressure //switches //use //to //sense //fluid //pressure?
Diaphram
What //number //of //pneumatic //hoses //are //permitted //to //cross //a //walkway?
0
A/
/lubricator //that //is //supplying //too //much //oil //to //the //system //can //be //noticed //by //__________.
Oil //drips //at //the //exhaust //ports //of //components
Which /
/of /
/the /
/following /
/is /
/the //first //step //to //determine //if //a //flow //control //valve's //internal //check //valve //is //stuck //open?
A. //Open //the //needle //valve //completely //and //check //for //flow //in //the //metered //direction
B. //Close //the //needle //valve //completely //and //check //for //flow //in //the //metered //direction
C. //Disassemble //the //flow //control //valve //to //inspect //check //valve
D. //Adjust //the //needle //valve //to //different //settings //to //determine //if //it //affects //flow
Close //the //needle //valve //completely //and //check //for //flow //in //the //metered //direction
*Which //of //the //following //is //the //best //test //to //use //to //determine //if //a //pilot //operated //DCV //is
//actually //shifting //if //the //cylinder/load //it //controls //will //not //move?
A. //Listen //for //air //flow //at //exhaust //ports //when //valve //is //operated
B. //Listen //for //spool //shift //when //activated
C. //Remove //valve //from //subplate //and //observe //movement //when //operated
D. /
/Disconnect /
/hoses /
/from /
/valves /
/actuator /
/ports //and //observe //air //flow //from //valve //actuator //ports //when //valve //is //manually //operated
304
/ /
Pneumatic
/ /
Troubleshooting
/ /
Blackboard
/ /
Exam Questions With Correct Answers
/ // // // //
Which //of //the //following //can //cause //slow //actuator //speed?
A. //Worn //cylinder //seals
B. //Worn //pressure //regulator //poppet
C. //Decrease //in //load
Worn //cylinder //seals
A(n) /
/__________ /
/shows //the //status //of //inputs //and //outputs //for //each //step //of //a //PLC's //program //sequence.
Sequence //chart
An //uneven //part //surface //can //cause //a //vacuum //cup //to //lose //its //seal //because //__________.
It //allows //air //to //enter //the //cup //reducing //the //amount //of //vacuum
Where //are //quick //exhaust //valves //installed //in //a //pneumatic //system?
Actuator //ports
Which /
/of /
/the /
/following //components, //when //failed, //is //least //likely //to //result //in //an //actuator //not //moving?
A. //DCV
B. //Actuator
,C. //Pressure //regulator
D. //FLow //control //valves //internal //check //valve
FLow //control //valves //internal //check //valve
Zero /
/pressure //at //a //branch //line //pressure //regulator //gauge //can //be //caused //by //all //of //these //faults
//EXCEPT //for?
A. //plantwide //air //system //is //off
B. //branch //line //shutoff //valve //is //closed
C. //filter //is //clogged
D. //partial //blockage //in //branch //line
partial //blockage //in //branch //line
If /
/newly /
/installed /
/vacuum /
/cups /
/are //damaging //the //material //being //lifted. //After //checking //supply //pressure //is //correct, //which
//of //the //following //is //the //next //step //you //should //do?
A. //Measure //pressure //at //vacuum
B. //Examine //material //for //an //uneven //surface
C. //Verify //that //cup //size //is //not //too //large
D. //Inspect //cups //for //cracks
Verify //that //cup //size //is //not //too //large
In /
/order /
/to //troubleshoot //a //PLC //controlled //pneumatic //machine //sequence //using //PLC //I/O //indicators,
//what //information //is //essential?
Sequence //chart
What //symptom //is //likely //to //occur //if //a //vacuum //generator //pressure //inlet //becomes //partially
//blocked?
decreased //vaccum //pressure
A //vacuum //switch //converts //a //sensed //pressure //into //a(n) //__________.
Electrical //signal
, A //partial //blockage //in //the //vacuum //generator //will //result //in //__________.
Low //vacuum //pressure
What //is //the //most //common //method //pressure //switches //use //to //sense //fluid //pressure?
Diaphram
What //number //of //pneumatic //hoses //are //permitted //to //cross //a //walkway?
0
A/
/lubricator //that //is //supplying //too //much //oil //to //the //system //can //be //noticed //by //__________.
Oil //drips //at //the //exhaust //ports //of //components
Which /
/of /
/the /
/following /
/is /
/the //first //step //to //determine //if //a //flow //control //valve's //internal //check //valve //is //stuck //open?
A. //Open //the //needle //valve //completely //and //check //for //flow //in //the //metered //direction
B. //Close //the //needle //valve //completely //and //check //for //flow //in //the //metered //direction
C. //Disassemble //the //flow //control //valve //to //inspect //check //valve
D. //Adjust //the //needle //valve //to //different //settings //to //determine //if //it //affects //flow
Close //the //needle //valve //completely //and //check //for //flow //in //the //metered //direction
*Which //of //the //following //is //the //best //test //to //use //to //determine //if //a //pilot //operated //DCV //is
//actually //shifting //if //the //cylinder/load //it //controls //will //not //move?
A. //Listen //for //air //flow //at //exhaust //ports //when //valve //is //operated
B. //Listen //for //spool //shift //when //activated
C. //Remove //valve //from //subplate //and //observe //movement //when //operated
D. /
/Disconnect /
/hoses /
/from /
/valves /
/actuator /
/ports //and //observe //air //flow //from //valve //actuator //ports //when //valve //is //manually //operated
