Vacuum Pumps

Vacuum Pumps

Professional Development

•

41 Qs

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Vacuum Pumps

Vacuum Pumps

Assessment

Quiz

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Other

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Professional Development

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Practice Problem

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Easy

Created by

Liam Harrett

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41 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The purpose of a vacuum pump is to maintain a vacuum in the annular space, which helps to reduce vaporization of the cryogenic liquid.

True

False

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The lowest possible pressure obtainable using a given vacuum pump, with the suction valve closed.

Open End

Closed End

Dead End

Low Point

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What must the atmospheric pressure be less than when operating?

30

25

27

20

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How long may a warm tank take to drop down to 200 microns?

48 hours

72 hours

24 hours

72 days

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Closes when the pump motor turns off or during a power loss to prevent back leakage through the pump.

(SV-1)

Gate Valve

Globe Valve

Relief Valve

Solenoid Valve

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Prevents toxic vapors from vacuum pump oil (Halovac 100) from entering the space.

Lagging

Overboard Piping

Sideboard Discharge

Solenoid Valve

7.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

What are the power requirements for a vacuum pump?

3/4 HP Motor

440VAC

3 Phase

60 Hz

50Hz

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