level 4 Flashcards
(144 cards)
1
Q
how many measurements should be taken to make sure the cylinder is round?
A
3
2
Q
where is the most wear on a cylinder?
A
most of the wear occurs towards the top on the major thrust side
3
Q
time allowed for for die to dry for magretic partical is called
A
dewell tine
4
Q
the most accurate method of checking the bearing clearance but also the most time consuming
A
measurement
5
Q
what is used to insolute a turbine
A
lagging
6
Q
where is the trust bearing located on a turbine
A
inlet side
7
Q
the casing of a steam turbin is called a ?
A
cylinder
8
Q
on some turbines you tighten the flange bolts by hydroulically stretching them and turning thenut down, this method does not require heating of ?
A
the bolts
9
Q
the foundation of the turbine should be isolatedfrom the other building floors. it should be at least ____times the mass of all the turbines assembly so that it does not move and helps dampen vibrations from the machine
A
2.5
10
Q
where are the defusers located in a das turbin
A
between the compresser and cumbustion chamber
11
Q
all desiel engiens have to be
A
artifishely asporated
12
Q
why are crank shaft filited
A
to prevent cracking
13
Q
what is vibration dempeners for
A
to reduse crank shaft torsional vibration
14
Q
where do condisat go in a steam turbin
A
hot well
15
Q
what pump is used to pump the condisat
A
condisate boiler feed pump
16
Q
where is a drive pully on a gravity drop drive
A
below the head pully
17
Q
what is the purpose of a S drive
A
To create enough weight on a chain to keep tension
18
Q
what are the adventages of fabricated chiar
A
it can be welded on
19
Q
a virtica screw conving should have a
(to be more efficient)
A
half pitch
20
Q
what is the minimum splice length is
A
the width of the belt
21
Q
the frame that supports the rollers also called
A
the roll case
22
Q
cement- based grout can be workedon after seven days but reaches its full compressive strength after
A
28 days
23
Q
to level a machine surface using a precision level first determine the ratio between the
Surface to be leveled and the length of the precision level
A
24
Q
drop in ancher sleeves requires a
A
setting tool
25
which anchor bolt is best suited for the edge of a concrate foundation
adhesive
26
plan view is looking down. elivation view is the ___________
side view to see elivation
27
oil whirl usually occurs at frequencies of about ____ to _____ of the shaft rotation
45% to 50%
28
what type of balancing requires a computer
dynamic imbalance
29
a ____ had a value of 9.8 meters per second or 32 feet per second
G
30
what is the purpose of lagging on steam turbines
retain heat and protect personnel
31
what drives a turbo
exhaust gas
32
what is the blading called in a diaphragm
reaction type blades
33
which blades do not have a pressure drop
impulse type
34
how many times do the crankshaft rotate for 1 cycle of a 4-stroke engine
crankshaft turns twice
35
which pulley do the load travel towards
head pulley
36
which pulley is usually the driven
head pulley
37
what is a crown pulleys purpose
helps keep the belt centered
38
what is a guide rollers purpose
to help direction of of belt stop the belt from hitting steel frame
39
which zone takes the most wear
the loading point
40
where do you place impact rollers
inderneath shoots
41
what kind of takeup dp you use on small flat belts
screw take ups
42
whats lagging purpose on a tail pulley
to increase the coefficient of friction between belt and pulley
43
what is ultrasonic testing used for
to find cracks
44
what should you do to paint before meg particile testing
remove/ grind off
45
what is used to measure vibration
vibration probe/analyzer
46
who should sign off a log book
a journeyman
47
how many measurements need to be taken to ensure cylinder is round
3
48
where does the most wear occur on a cylinder
the top
49
the casing of a system turbine is called
cylinder
50
what light do you use for fluroscence
uv
51
definition of NDT
non-destructive testing
52
what is the most important thing then starting up a steam turbine
use jacking oil
53
where do the condensate go in a turbine
it goes in a hot well
54
how wide should you have a lap joint on a bucket conveyor
at least one width of the belt
55
backstop on a bucket convyor
allow it to travel in one direction only
56
heavy duty chain (H-style)
pintle chain
57
advantage of hot vulcanize
strongest belt join
58
hydraulic stretch how would you tighten the flange bolts on a turbine
by hand tightening bolt
59
what is the purpose of fillets on a crankshaft
to avoid stress areas on the crank
60
what is the purpose of a vibration dampener
to reduce crankshaft torsional vibration
61
where is the drive pulley on a gravity drop drive
below the head pulley
62
the materials ability to emit thermal radiation
emissivity
63
___________ is the process of assuring that all systems and components of a building or industrial plant are designed, installed, tested, operated, and maintained according to the operational requirements of the owner or final client
commissioning
64
Deficiencies are then classified as _______________ identifying when each must be complete
type-a, type-b, or type-c
65
_______ is critical and must be addressed before proceeding to the next activity.
Type-A
66
_______ does not need to be addressed immediately and does not impact subsequent activities but must be rectified prior to handover to the owner.
Type-B
67
______ deficiencies are minor defects and are agreed by the owner to be rectified after handover.
Type-C
68
during the design and procurement phase of the project, a criticalstep prior to equipment delivery to site is _____________
Factory acceptance testing (FAT)
69
______ is the most thorough verification and will make on-site commissioning go much smoother if it is known in advance that the equipment delivered to the site works.
FAT
70
_________ occurs at the end of construction once the equipment is installed.
Mechanical completion
71
upon mechanical completion of eachportion of the work, and deficiencies agreed to, ___________ activities can thencommence
Pre-Commissioning
72
____________ is the last phase in the lifetime of a facility, following its design, construction, operation, amd permanent shutdown.
decommissioning
73
_______ refers to putting the facility in an idle state or temporary shutdown in a manner that allows restarting later, when the business environment makes the process attractive again
mothballing
74
once it is clear that the plant has to be shut down, start planning the 3D process which is?
Decontamination, Dismantling and Disposal
75
_________applications include material transfer and machine loading and unloading.
material-handling
76
_________ this is a device that is attached to the end of a robotic arm to carry out its tasks
grippers and effectors
77
____________ sometimes referred to as an end effector is a crucial aspect of robotic technology
End of arm tooling (EOAT)
78
____________ also referred to as rectilinear or gantry robots, these cartesian robots consist of three linear joints that use the coordinate system of X, Y & Z. usually with a wrist attached for rotational movement.
cartesian
79
____________ cobots typically have a sieek shape, with no pinch points and with internal features such as motors and wires.
collaborative robot (cobot)
80
__________ stands for selective compliance articulated robot arm.
SCARA
81
_________ who possessess greater skills, knowledge and experience.
mentor
82
______ who is looking to increase their skills, knowledge and experience
mentee
83
tools and equipment used to ______. _______. _______ and repair robotics and automative
install, diagnose, maintain
84
the most efficient type of steam turbine is?
condensing
85
how do friction bearings self alining
spherical seat
86
what is the purpose of a defuser on a turbine
turn high speed into pressure
87
The most important factor in a centrifugal bucket conveyor
Speed
88
Shaft that joins two screw conveyors
Dungeon shaft
89
What chain is used for a side load?
Rooftop or Camelback
90
Ratchet and pawl is a type of
Backstop
91
What are the 3 main types of hydraulic turbines?
Pelton, Francis, Kaplan
92
What is the purpose of a diffuser on a turbine
Turn high speed into pressure
93
The most efficient type of steam turbine
Condensing
94
How do friction bearings self-align?
Spherical seat
95
Best way to lift a turbine?
Spreader bar
96
What is the purpose of lagging on steam turbines?
Retain heat and protect personnel
97
What drives a turbo?
Exhaust gas
98
What is the blading called in a diaphragm?
Reaction type blades
99
Which blades do not have a pressure drop?
Impulse type
100
How many times do the crankshaft rotate for 1 cycle of a 4-stroke engine?
Twice
101
Which pulley do the load travel towards?
Head pulley
102
Which pulley is usually the driven?
Head pulley
103
What is the crown pulleys purpose?
Helps keep the belt centred
104
What is the guide rollers purpose?
To help direction of the belt stop the belt from hitting the steel frame
105
Which zone takes the most wear?
The loading point
106
Where do you place impact rollers?
Underneath shoots
107
What kind of takeup do you use on small flat belts?
Screw take ups?
108
What’s lagging’s purpose on a tail pulley?
To increase the coefficient of friction between belt and pulley
109
What is ultrasonic testing used for?
To find cracks/defects
110
What should you do to paint before mag particle testing?
Remove? Grind off?
111
What is used to measure vibration?
Vibration probe/analyzer?
112
Which part of the belt takes the shock absorb?
Carcass
113
what tool is used for layout of a robotic system
Theodolite
114
What is the difference between the 6-axis/7-axis robot?
Freedom of movement
115
Robotic lockout tagout question
ECU (Electronic Control Unit)
116
How do you balance a pump impeller?
Measure original imbalance, install a trial weight, place the correction weight
117
What is caused by keyways on a shaft?
Dynamic imbalance
118
Reason for axial fan to be unbalanced
Dirt build up/dirt fall off
119
Definition of side to side unbalanced
Static imbalance
120
Definition of quasistatic
Static and couple
121
Belt speed formula (gear box)
A series of letters and numbers
122
When should you adjust the packing on a cold water pump?
After it starts
123
Confirm communication with mentor
Repeat
124
What is meant by cold alignment on a water pump?
Doing it at room temperature
125
What is displacement measured in?
Thousandths of an inch or hundredths of a mill
126
When all components have the same phase angle, this is called ___________ ?
In phase
127
Best way for mentor to assess progress
Watch them
128
Procedure for dye penetrant
Clean material, spray on penetrant, let it dwell, spray cleaner on rag, spray developer
129
What is the most important thing when starting up a steam turbine?
Test emergency trip
130
What houses a screw conveyor
Trough
131
Oil analysis shows:
Oxidation, additive breakdown and any metals, fuel or glycol in the system.
132
Back lash couplings are used for
Accuracy
133
When removing buckets from a bucket conveyor make sure to keep it
In balance
134
Most accurate way to remove weight on a “shive”? Is to
Drill holes
135
Valves on top of a steam turbine
Throttle valves
136
Blades on the discharge end of a turbine are
Bigger
137
When do you shut off the jacking pump on a turbine?
60rpm
138
Steps to starting a gas turbine are:
-build pressure
-fuel and igniter
139
Blades past the combustor are
The turbine
140
2/3rd of power from a gas turbine goes to
Compress it’s own air
141
Spectrograph is good for detecting
Early failure in lubricant
142
In order to get a spectrum from a sinwave you need
FFT
143
If an axial vibration is 50% or more it is
Radial
144
