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Millwright level 4 > Red Seal Exam Practice > Flashcards

Red Seal Exam Practice Flashcards

1
Q

What is the ladder ratio

A

4:1

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2
Q

Worm and worm gear changed often ( wears often) What should be done?

A

change to double-throated

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3
Q

40 ft base has a guy line 35 ft high. how long while your rope is required

A

53.15

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4
Q

what is the formula to find the hypotenuse of a triangle
a squared plus b squared equals c squared

A

a squared + b squared = c squared

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5
Q

engineered chain conveyor take ups won’t take all the slack. What needs to be done?

A

remove links in chain

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6
Q

conveyor skips teeth, what needs to be done

A

tighten tension idler

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7
Q

Pneumatic conveyor transporting fibrous material. what type of impeller is required?

A

Open Face

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8
Q

how is it proper to do initial tracking of belt

A

Empty

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9
Q

two leg bridle swl rope 3,000 lb slings 5 ft long, height from load to hook 10 ft. what is the system capable of lifting

A

4000 lb

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10
Q

45,000 lb turbine rotor needs to be lifted using spreader bar and basket sling what is the swl of the slings required

A

12,000 lb

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11
Q

pump shaft 12 in from base, initial temperature 70° f, operating temperature 180° fahrenheit, coefficient of expansion zero decimal 0.0000063. Find E

A

0.008316

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12
Q

On a Pneumatic motor a solenoid operated dcv is de energized but motor keeps on turning, what needs to be done?

A

Replace spring in dcv

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13
Q

what wire rope is required on a high-speed Crane or a chrome that has multiple reeves

A

6x37

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14
Q

angle of tip to cut thick Metal with oxy acetylene torches

A

45° angle forward

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15
Q

18 in diameter Outrigger block padding should be at least three times bigger an area what is the area of blocking required?

A

763.14

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16
Q

in an internal combustion engine what is done to prevent sludge buildup

A

detergent oil

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17
Q

Test to check overloaded bearing

A

dye penetrant

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18
Q

test to check overheated bearing?

A

Thermography

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19
Q

Newly installed taper roller bearing overheats due to not enough clearance, where should shims be added?

A

under the plate bolted at the end of the shaft( not under the cover) because cover holds race at the bottom of the cavity and the plate at the end of the shaft pushes the bearing into the race
between outer cover and housing

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20
Q

a newly installed roller bearing is overheating, what is the cause

A

not enough clearance

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21
Q

multiple bearing points in the same system are equipped with thermocouples, every Point indicate high temperature, what should be done

A

more flow of oil

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22
Q

what should be done to a pillow block bearing casing halves after it has been bored to prevent distortion of bearings

A

relieve it

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23
Q

oil pressure and reciprocating compressor is still excessive after changing oil filter for another of the same Micron rating, what is the cause?

A

blocked Passage

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24
Q

what is used to measure pressure difference across a filter in a ventilation system?

A

Manometer connected to both sides of the filter

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25
Q

What type of ventilation to vent a confined space with only one opening?

A

ducting to furthest point in the space

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26
Q

document required to enter a tank or a container

A

confined space permit

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27
Q

Sequence valve fails to open what is done to fix it

A

unblock drain line

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28
Q

reciprocating compressor keeps tripping Breakers at startup, what needs to be done?

A

adjust unloader valves

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29
Q

pneumatic diaphragm pump fails to deliver flow at output even when diaphragm is in good condition, why?

A

pump Centerline located too high from suction point

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30
Q

drawing with chart for Crane without riggers, length of boom, angle of boom, and radius. what is the safe working load?

A

look in the chart

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31
Q

Fusible plug on fluid coupling on a turbine melts,

A

low speed

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32
Q

type of imbalance from a keyway cut in a shaft

A

Dynamic

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33
Q

conveyor has been repaired and is ready to return online, Why won’t it energize?

A

emergency cord tripped

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34
Q

When adding a new gear reducer on a conveyor, what is the first step?

A

measure distance between components

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35
Q

datum point is at 210.50”, base plate average height is at 80.25”, what is the elevation of the base plate?

A

130.25 ( subtract)

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36
Q

Using a scope, what reading indicates highest bearing?

A

9.615”

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37
Q

what is the proper procedure to place piano wire

A

established datum points, string wire, set base plate

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38
Q

15,000 CFM fan only creates 12,000 CFM with a 25 HP motor, what HP is required to produce 15,000 cfm?

A

31.25HP

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39
Q

What is the pressure required to lift 1,000 lb load, diameter 4”

A

12.566 square inches

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40
Q

cylinder extends but won’t retract why?

A

low pressure

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41
Q

a new dcv installed on a single acting hydraulic cylinder. cylinder now extends without touching dcv why?

A

normally closed valve is in the open position

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42
Q

Fan in an induced ventilation system vibrates why?

A

build up

43
Q

when going out to check on a conveyor, what is an indication that the breaker has been tripped?

A

backstop clutch activated ( not running)

44
Q

what type of oil is used in reciprocating compressor

A

non detergent

45
Q

how do you fix a tear in heavy duty belt?

A

drill holes, metal plate

46
Q

what should be done first when you are leveling a base plate?

A

figure out ratio between level and base

47
Q

figure out ratio between level and base

A

base is aligned and level and torque bolts at 50%

48
Q

What is the first step for proper installation of horizontal split ( blower) and motor after datum lines and center lines have been established?

A

position sole plate

49
Q

how do you fix a deformed disc on a disc brake system?

A

Lathe

50
Q

you notice a roller chain is stretched during removal what should you do?
replace sprockets, replace chain, tighten
what do you do when the V belt whips?

A

Tighten

51
Q

what is the product of an imbalanced shaft?

A

bearing failure

52
Q

What is monitoring vibration analysis

A

Amplitude

53
Q

what is the main purpose of preventative maintenance?

A

reduce production cost

54
Q

what is the proper way to start machine for first time if you don’t have any manufacturer specs

A

check oil levels, jog

55
Q

what is the proper way of changing a faulty air relief valve on a compressor receiver after compressor has been locked out?

A

bleed off receiver and change relief

56
Q

sling rubs against framing during a lift what should be done as soon as the lift is done?

A

inspect sling

57
Q

During a lift, one of the hydraulic jacks is noticed to be leaking. what should be done as soon as the load is off?

A

tag and send for pressure testing

58
Q

where can information on safe operating temperature for equipment be found if you don’t have the manufacturer books?

A

name plate

59
Q

during a pre-lift inspection, a come along is noticed to have a sticky raise - lower lever, what should be done?

A

tag and send for repairs

60
Q

in modern industry where is oil analysis information stored

A

computerized maintenance system

61
Q

when filling a tank it does not fill to preset amount, why?

A

plugged vent

62
Q

you have a 50 inch diameter drum how long will the Rope do you need to do three dead wraps on the drum?

A

471”

63
Q

What is used for a quick fix of a warrant shaft at lip seal location?

A

use Speedy sleeve

64
Q

what should be done to permanently fix a warrant shaft because of a loose bearing fit?

A

build up and machine

65
Q

what valve is fully opened on oxy acetylene torch?

A

oxygen cylinder

66
Q

pressure gauge is located at discharge on a compressor and it spikes higher than what it should be, what is the cause?

A

blockage further down the line

67
Q

after changing a filter in a hydraulic system there is some noise in the lines at startup, why?

A

Aeration

68
Q

Mechanical seal has cooling water during startup, when is cooling water turned on?

A

before startup

69
Q

what is the proper way to adjust compression packing?

A

Full stream, tighten until slight drip

70
Q

motor on a pump runs with a high amperage, what would be the cause?

A

packing too tight

71
Q

pump has too much head pressure, how can it be fixed?

A

machine impeller

72
Q

what is the proper way to set clearance on open face and color?

A

to manufacture spec

73
Q

what is the proper way to store a bottle jack?

A

fully retracted and load de-energized

74
Q

How do you store a torque wrench?

A

tension relieved

75
Q

a stationary diesel engine overheats on a hot summer day, what is the problem?

A

fins on radiator are damaged

76
Q

a seal is installed on a piston inside of a boar, it needs to seal inside the cylinder walls and the Piston outer diameter, what type of seal is it?

A

Balanced

77
Q

what is the instrument used to check backlash on Gears?

A

dial indicator

78
Q

After taking plane bearing cap off, what is the method to measure clearance?

A

plasti gauge, torque, remove, measure

79
Q

What is the width of Woodruff key compared to shaft size?

A

1/4

80
Q

a gradual increase in vibration over a long period of time indicates what?

A

normal wear

81
Q

what is done when greasing to prevent contamination?

A

clean nipple and applicator

82
Q

What type of gap would be used to weld vertically?

A

Short arc

83
Q

When draining condensation water from Air receiver tank why is it considered hazardous material?

A

it contains oil

84
Q

Belt deflection for every inch of span

A

1/64

85
Q

How do you install taper bore ball bearings?

A

tighten until slight drag is felt

86
Q

An impact wrench doesn’t work what do you do?

A

take it apart, clean internals, lube, put it back together

87
Q

fan with a torque converter is not running to full capacity what should be checked first?

A

fluid in torque converter

88
Q

Sequence of events to disassemble diesel engine

A

take apart, clean, inspect

89
Q

what type of Jack should be used to hold a load?

A

Screw

90
Q

what is used to lift a turbine rotor?

A

Spreader bar

91
Q

What is the proper procedure to change compression packing?

A

pull old packing, flush, check shaft for wear, install new packing and Lantern ring, tighten

92
Q

6 ft base plate and level is 2 ft long it is set long ways on the plate, level needs 0.006 in under one end of it to level, how thick should the shims be under the end of the plate?

A

0.018”

93
Q

Find the weight of a stack of 35 steel plates one half inch thick, 4 ft wide, 8 ft long, weight of Steel is 490 pounds per foot

A

22,866.66 lb

94
Q

gearbox shaft seal is leaking why?

A

plugged vent

95
Q

job coupling premature failure why?

A

Misalignment

96
Q

one part of the conveyor belt is always running off why?

A

a bad splice

97
Q

gauge blocks on Surface plate, what should be the first thing you do?

A

clean surface

98
Q

pressure reducing valve fails to deliver enough pressure why?

A

broken spring

99
Q

Two plates different diameters. how to center end to end?

A

large diameter mine a small diameter and what is left divided by 2 will tell you how much they should be offset

100
Q

how to clean a respirator?

A

Dry soft cloth and alcohol

101
Q

chain fall covered in grease what do you do?

A

clean with Rag and solvent

102
Q

what do you need to do when you need to go inside of a diesel engine?

A

ensure crankshaft can’t rotate

103
Q

what do you do before connecting pump to motor?

A

check motor for proper rotation

Millwright level 4 (6 decks)

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