Q.1
During the first half cycle in pressurized powder feed system, powder that has entered the mixing chamber is _____
  • a) forced out of the nozzle
  • b) heated to a specific temperature
  • c) mixed with air
  • d) mixed with cutting fluid
Q.2
During first half cycle, mixing chamber is at ___________
  • a) atmospheric pressure
  • b) 2 atm
  • c) 2 bar
  • d) vacuum
Q.3
Powder mass flow rate is controlled by _____________
  • a) regulating the air flow rate
  • b) nozzle diameter
  • c) size of the mixing chamber
  • d) cycle time
Q.4
In fluidized bed powder spray system, the air flow from the bottom of the reservoir creates_____
  • a) pressure in the system
  • b) a cloud of powder particles
  • c) vacuum in the system
  • d) high turbulence to increase the effectiveness
Q.5
Which of the following is true about powder flow rate in fluidized bed powder system and other systems?
  • a) First has higher flow rate the other
  • b) First has lower flow rate the other
  • c) There is no relation as it is dependent on nozzle parameters
  • d) Powder flow rate in is not a measurable parameter
Q.6
The powder mass flow rate is dependent on_____
  • a) fineness of powder particles
  • b) type of mask used during the process
  • c) carrier gas
  • d) amount of powder
Q.7
Powder compaction is desirable during AJMM.
  • a) True
  • b) False
Q.8
There are variations in the powder mass flow rate due to_____
  • a) powder compaction
  • b) size of the powder particles
  • c) air flow rate inside the mixing chamber
  • d) pressure build-up in the chamber
Q.9
Mounting a variable speed rotary electric mixer above the reservoir can reduce powder compaction.
  • a) True
  • b) False
Q.10
The degree of powder stratification is not affected by_____
  • a) mixing time
  • b) powder mass flow rate
  • c) air flow velocity
  • d) diameter of the funnel in the mixing chamber
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