2-20.
The purpose of the regulated
low-pressure nitrogen system is to
supply nitrogen to which of the
following components?
1.
N2 input connection
2.
In-system leakage rotameters
3.
Both 1 and 2 above
4.
N2 output connection
2-21.
When you are testing the regulated
low-pressure system for leaks, what
action determines a leak is present?
1.
The low-pressure gage drops
2.
The low-pressure gage rises
3.
The ball in the high-range
leakage rotameter rises
4.
The ball in the low-range leakage
rotameter rises
2-22.
When the low-pressure regulator
indicates 160 psig, what should the
N2 input pressure gage be reading?
1.
70 psig
2.
120 + 5 psig
3.
145 ± 5 psig
4.
160 psig
2-23.
When making bleed adjustments to a
20004 miniature regulator, You should
use which of the following systems?
1.
Input
2.
Rotameter
3.
output
4.
Regulated low-pressure
2-24.
How many rotameters are incorporated
in the rotameter system?
1. One
2. Two
3.
Three
4.
Four
2-25.
Which of the following types of
leakage tests requires you to connect
the low-pressure connection (19) and
the 200 ccm leakage connection (20)
together by using the line with two
bayonet fittings?
1.
Leakage between the low-pressure
and rotameter system
2.
Leakage between the high-pressure
and rotameter system
3.
Leakage through the leakage
control valve (E)
4.
Leakage through the supply
shut off valve
2-26.
Which of the following connections is
NOT located inside the pressure
chamber?
1.
Low-pressure connection
2.
200-ccm leakage connection
3.
Reference tap connection
4.
Differential pressure connection
2-27.
To pressurize the differential
pressure system for a leakage test,
you open the leakage control valve
until it reaches how many inches of
water on the pressure/suction
manometer?
1.
5 in.
2.
9 in.
3.
12 in.
4.
18 in.
2-28.
Leakage in the differential pressure
system will be indicated on which of
the following gages?
1.
Pressure/auction rotameter
2.
High-range leakage rotameter
3.
Low-pressure leakage rotameter
4.
All of the above
2-29.
The differential pressure indicating
system is used to perform which of
the following tests?
1.
Safety-pressure
2.
Pressure breathing
3.
Flow suction
4.
All of the above
2-30.
How many manometers are used on the
test stand to indicate differential
pressure?
1.
One
2. Two
3.
Three
4.
Four
2-31.
Which of the following valves or
connections affect(s) readings on the
pressure suction manometer?
1.
Helmet reference tap
2.
Suit simulator reference tap
3.
Pressure equalizer valve
4.
All of the above
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