FDNY A-35 EXAM QUESTIONS WITH CORRECT
ANSWERS
Air |compressors |power... |- |CORRECT |ANSWER✔✔-(1) |industrial |equipment |and |(2) |
construction |tools
Examples |of |equipment |powered |by |air |compressor |- |CORRECT |ANSWER✔✔-pneumatic |
wrenches, |lifts |in |auto |service |stations, |paint |spray |booths
Air |compressors |enable... |- |CORRECT |ANSWER✔✔-(1) |efficient |repair |of |all |types |of |vehicles; |
and |(2) |facilitate |their |safe |operation |on |public |thoroughfares
Permit |is |required |for |air |compressor |- |CORRECT |ANSWER✔✔-that |compresses |air |above |100 |
PSI
Types |of |air |compressors |- |CORRECT |ANSWER✔✔-(1) |reciprocating;
(2) |centrifugal;
(3) |solar; |and
(4) |rotary
*Difference |is |the |way |in |which |they |compress |air
How |do |air |compressors |work |- |CORRECT |ANSWER✔✔-take |the |air |in |a |room |and |force |it |into
|a |container |UNDER |PRESSURE. |The |more |air |forced |into |the |container, |the |greater |the |
pressure. |Compressed |air |can |be |discharged |from |the |container |at |a |controlled |rate.
Most |common |air |compressor |- |CORRECT |ANSWER✔✔-Reciprocating
, Air |compressors |are |sometimes |called |- |CORRECT |ANSWER✔✔-air |pumps
Air |compressors |can |be |powered |by: |- |CORRECT |ANSWER✔✔-(1) |electric |motors;
(2) |internal |combustion |engines; |or
(3) |steam |turbines
Explosions |& |air |compressors |- |CORRECT |ANSWER✔✔-If |there |is |a |build |up |of |flammable |
gases |(ex: |in |service |stations |and |workshops), |those |gases |are |heavier |than |air |and |fall |to |the |
floor |before |spreading |outward. |These |gases |are |easily |ignited |by |sparks |and |high |
temperatures--which |INCLUDES |the |heat |generated |by |an |air |compressor.
To |avoid |explosions |w/ |air |compressors |- |CORRECT |ANSWER✔✔-Raise |air |compressor |at |LEAST
|5 |feet |above |ground |level |so |that |no |flammable |gases |are |drawn |into |the |compressor. |To |
meet |the |height |requirement |you |can |place |compressor |on |a |shelf |or |bench |OR |the |air |
receiver |tank |may |be |turned |and |stood |on |end |w/ |the |air |compressor |bolted |to |the |top |of |the
|tank.
Power |to |air |compressor |- |CORRECT |ANSWER✔✔-entire |unit |is |driven |by |an |electric |motor. |
Motor |activates |a |series |of |drive |belts. |Belts |power |the |moving |parts |of |the |unit--like |w/ |
power |steering |and |alternator |in |automobile
Compression |Chamber |operation |- |CORRECT |ANSWER✔✔-Air |is |compressed |in |compression |
chamber |which |consists |of |a |PISTON |inside |a |CYLINDER. |Piston |moves |up |and |down. |
When |piston |moves |down |-->draws |air |into |cylinder, |through |INTAKE |VALVE |(valve |
automatically |opens |when |piston |moves |down).
When |piston |moves |up-->air |is |compressed |(intake |vale |automatically |closes |to |avoid |air |
escaping |from |cylinder).
ANSWERS
Air |compressors |power... |- |CORRECT |ANSWER✔✔-(1) |industrial |equipment |and |(2) |
construction |tools
Examples |of |equipment |powered |by |air |compressor |- |CORRECT |ANSWER✔✔-pneumatic |
wrenches, |lifts |in |auto |service |stations, |paint |spray |booths
Air |compressors |enable... |- |CORRECT |ANSWER✔✔-(1) |efficient |repair |of |all |types |of |vehicles; |
and |(2) |facilitate |their |safe |operation |on |public |thoroughfares
Permit |is |required |for |air |compressor |- |CORRECT |ANSWER✔✔-that |compresses |air |above |100 |
PSI
Types |of |air |compressors |- |CORRECT |ANSWER✔✔-(1) |reciprocating;
(2) |centrifugal;
(3) |solar; |and
(4) |rotary
*Difference |is |the |way |in |which |they |compress |air
How |do |air |compressors |work |- |CORRECT |ANSWER✔✔-take |the |air |in |a |room |and |force |it |into
|a |container |UNDER |PRESSURE. |The |more |air |forced |into |the |container, |the |greater |the |
pressure. |Compressed |air |can |be |discharged |from |the |container |at |a |controlled |rate.
Most |common |air |compressor |- |CORRECT |ANSWER✔✔-Reciprocating
, Air |compressors |are |sometimes |called |- |CORRECT |ANSWER✔✔-air |pumps
Air |compressors |can |be |powered |by: |- |CORRECT |ANSWER✔✔-(1) |electric |motors;
(2) |internal |combustion |engines; |or
(3) |steam |turbines
Explosions |& |air |compressors |- |CORRECT |ANSWER✔✔-If |there |is |a |build |up |of |flammable |
gases |(ex: |in |service |stations |and |workshops), |those |gases |are |heavier |than |air |and |fall |to |the |
floor |before |spreading |outward. |These |gases |are |easily |ignited |by |sparks |and |high |
temperatures--which |INCLUDES |the |heat |generated |by |an |air |compressor.
To |avoid |explosions |w/ |air |compressors |- |CORRECT |ANSWER✔✔-Raise |air |compressor |at |LEAST
|5 |feet |above |ground |level |so |that |no |flammable |gases |are |drawn |into |the |compressor. |To |
meet |the |height |requirement |you |can |place |compressor |on |a |shelf |or |bench |OR |the |air |
receiver |tank |may |be |turned |and |stood |on |end |w/ |the |air |compressor |bolted |to |the |top |of |the
|tank.
Power |to |air |compressor |- |CORRECT |ANSWER✔✔-entire |unit |is |driven |by |an |electric |motor. |
Motor |activates |a |series |of |drive |belts. |Belts |power |the |moving |parts |of |the |unit--like |w/ |
power |steering |and |alternator |in |automobile
Compression |Chamber |operation |- |CORRECT |ANSWER✔✔-Air |is |compressed |in |compression |
chamber |which |consists |of |a |PISTON |inside |a |CYLINDER. |Piston |moves |up |and |down. |
When |piston |moves |down |-->draws |air |into |cylinder, |through |INTAKE |VALVE |(valve |
automatically |opens |when |piston |moves |down).
When |piston |moves |up-->air |is |compressed |(intake |vale |automatically |closes |to |avoid |air |
escaping |from |cylinder).
