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Refrigeration Machine Operator Exam Test Guide Questions and Answers
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  • Module
  • Refrigeration machine operator
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  • Refrigeration Machine Operator

The pump best suited to pump heavy viscous liquids is - Answer-A rotary pump Which type of pump produces the greatest suction? - Answer-a positive displacement pump reciprocating pumps: 1) are high pressure pumps 2) must be primed 3) use mechanical seals 4) should be started with the suct...

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Document information

  • September 10, 2024
  • 4
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

Subjects

  • refrigeration machine operator exam test guide que
  • the pump best suited to pump heavy viscous liquids

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  • Refrigeration machine operator
  • Refrigeration machine operator

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Refrigeration Machine Operator Exam
Test Guide Questions and Answers
The pump best suited to pump heavy viscous liquids is - Answer-A rotary pump

Which type of pump produces the greatest suction? - Answer-a positive displacement
pump

reciprocating pumps:
1) are high pressure pumps
2) must be primed
3) use mechanical seals
4) should be started with the suction and discharge open - Answer-1 and 4

a volute type pump - Answer-Has a progressively expanding spiral casing.

a diffuser pump
1) has stationary guide vanes surrounding the impeller
2) has a higher efficiency than a volute type
3) has high suction lift
4) does not have to be primed - Answer-1 and 2

Turbine pumps are best suited for
1) are high capacity pumps
2) are high pressure pumps
3) have the liquid gain energy in a number of impulses
4) are low maintenance pumps - Answer-2 and 3

another name for a lantern ring used in pumps is - Answer-seal cage

gear and piston pumps would be under the category of - Answer-positive displacement

the number of discharge valves on a two cylinder double acting pump will be - Answer-4

a sliding vane pump is termed - Answer-a rotary pump

when starting up a reciprocating pump - Answer-the discharge valve should be open

the purpose of "wear rings" in centrifugal pumps is to - Answer-increase the efficiency

Pump Priming - Answer-is done with the suction valve open

sealed bearings on pumps require greasing - Answer-none of the above

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