Millwright Red Seal Study 1
1. Spherical seated bearings are usually used on very large turbines with a long span between bearings. A) True B) False
A) True
1. The Workplace Hazardous Materials Information System is designed to protect the worker from exposure to harmful substances. A) True B) False
A) True
95. A piston pump is a type of reciprocating pump. A) True B) False
A) True
96. When troubleshooting the operation of a pump, a rule of thumb is to replace wear rings when the wear ring clearance has increased to three times the initial clearance. A) True B) False
A) True
1. A battery backup is provided in a PLC to keep the: A) Program in the processor memory during power failure B) I/O status bits active during a power outage. C) Program intact within the I/O modules. D) Program running in an emergency.
A) Program in the processor memory during power failure
1. Which of the following EAT charge colours has the strongest charge? A) Red B) Green C) Yellow D) Brown
A) Red
1. The theoretical power of an engine is called the: A) friction horsepower .B) indicated horsepower. C) pump horsepower. D) brake horsepower.
.B) indicated horsepower.
1. What are holding contacts? A) normally closed contacts that keep the coil de-energized .B) normally open contacts that keep the coil energized C) normally open contacts that control a pilot device. D) normally closed contacts that control a load.
.B) normally open contacts that keep the coil energized
1. When checking rod runout , the reading should normally be between 0.0005 inches and: A) 0.0025 B) 0.025 C) 0.0043 D) 0.043
A) 0.0025
1. How can pillow blocks be described? A) As self contained bearing housings B) As after market bearing supports C) As a device very similar in function to the lip seal D) A device similar but designed for higher speeds than the V-ring
A) As self contained bearing housings
1. A pump that is designed for higher pressures will generally have a radially split casing. A) True B) False
A) True
On a small impulse steam turbine the nozzle ring is located and bolted in place: A) at the steam chest side. B) near the exhaust outlet. C) at the reversing chamber. D) next to the second rotor.
A) at the steam chest side.
1. On an electric governing system the sensors: A) detect speed. B) generates an output signal for the actuator. C) moves the fuel metering control to change the amount of fuel delivered. D) do all of the above.
A) detect speed.
1. When a piston on an engine travels from the Top Dead Centre position to the Bottom Dead Centre position and takes on fuel, the piston has traveled thru the _____ stroke. A) intake B) compression C) power D) exhaust
A) intake
1. At the surge point of a dynamic compressor the volume of gas moved is _____ and the pressure is ______. A) low, high B) low, low C) high, high D) high, low
A) low, high
92. Which of the following drill is used for soft materials like brass bronze and plastic? A) straight fluted drills B) core drills C) high helix drills D) oil hole drills E) deep hole drills
A) straight fluted drills
1. Pneumatic instrumentation systems need _____ air so small orifices do not become plugged. A) very dry B) very wet C) no D) high pressure
A) very dry
1. With scaffold planks and platforms the employer must ensure that all scaffold platforms are at least _____ mm wide for heavy duty scaffolds. A) 2 metres B) 1 metre C) 1/2 metre D) 250 cm
B) 1 metre
1. Typically overspeed trips are set at _____ percent above the normal maximum operating speed. A) 20 -25 B) 10 - 15 C) 5 - 10 D) 1 - 3
B) 10 - 15
1. How many teeth per inch should a hacksaw have if it is used to cut brass? A) 32 B) 24 C) 18 D) 14
B) 24
1. If you are cutting material within ____ inches from a sprinkler it should be shielded. A) 48 B) 39 C) 26 D) 12
B) 39
1. The isolation switching system relay is a device that uses: A) A line voltage circuit to operate a line voltage circuit B) A low voltage circuit to operate a line voltage circuit. C) A line voltage circuit to operate a low voltage circuit. D) Remote solenoids to actuate remote contacts
B) A low voltage circuit to operate a line voltage circuit.
1. Which of the following is true with respect to comparing a servo valve to a proportional valve? A) A servo uses a solenoid to operate the valve instead of a torque motor B) A servo valve always has a mechanical feedback mechanism built into it C) A servo is more rugged and dirt tolerant than a proportional valve D) A servo valve is less expensive
B) A servo valve always has a mechanical feedback mechanism built into it
1. A disadvantage of vane motors is that are not bidirectional. A) True B) False
B) False
1. A scaffold is designed for static loads and accelerating loads. A) True B) False
B) False
1. Piping is typically not a source of resonance problems. A) True B) False
B) False
1. The flow properties above the pour point are usually the same as the flow properties at the flow point. A) True B) False
B) False
1. When performing maintenance on a pump, vibration analysis has a broader scope of use than ultrasonic analysis. A) True B) False
B) False
1. When the dial of a cross feed dial is turned through one increment the diameter of the workpiece is reduced by 0.002 inch. A) True B) False
B) False
1. Which is the correct sequence of installation for the following pneumatic components? A) Gauge, lubricator, regulator, filter B) Filter, regulator, gauge, lubricator C) Regulator, filter, lubricator, gauge D) Lubricator, gauge, filter, regulator
B) Filter, regulator, gauge, lubricator
1. What is brinelling? A) A round depression worn into the raceway B) Impact denting C) Axial or radial stress cracks D) Laminated cores in magnetic bearings
B) Impact denting
1. What is nominal pipe size based on? A) Outside diameter B) Inside diameter C) The type of factory heat treatment used D) The process of manufacture
B) Inside diameter
1. With the CSA marking system shown below for pipes what does the number 16.8 refer to? KMK Co. Z435.9 442 x 16.8 425 E E HQ A) Trade mark B) Inside diameter C) Outside diameter D) Patent # E) Type of steel F) Yield strength
B) Inside diameter
What type of valve is usually installed with a rupture relief valve? A) Butterfly B) Plug C) Balanced D) Needle
B) Plug
1. What determines the pressure in the lubrication system? A) The physical size of the compressor B) The amount of clearance in the bearings. C) Whether it is single or double acting D) The Hp and voltage rating
B) The amount of clearance in the bearings.
Where of the following best describes a slip in cartridge valve? A) They are for low flow circuits B) They are for large flow circuits C) They can be bolted together D) They control the speed of an actuator
B) They are for large flow circuit
1. Which of the following is not a characteristic of petroleum based-based oils? A) They do not wear out. B) They are water soluble. C) They have good demulsibility. D) They are the least costly type of oil.
B) They are water soluble.
A lifter is a solid or hydraulic device that connects the: A) crankshaft and the piston. B) camshaft and the pushrod .C) piston and the rocker arm. D) rocker arm and the valve.
B) camshaft and the pushrod
1. Blinds are use in piping systems to: A) shield people from accidental sprays. B) close off the ends of piping systems. C) establish the direction of flow. D) cover leaks.
B) close off the ends of piping systems.
84. With respect to cutting, the actual cutting speed _______ as the workpiece gets smaller provided RPM stays constant A) increases B) decreases C) stays the same
B) decreases
1. The type of oil filter that traps small particles in a fibrous material is the ______ filter. A) surface B) depth C) edge D) centrifuge
B) depth
1. A variable-speed mechanical device will be operating as a constant ______ device if the output speed is greater than the input speed. A) torque B) horsepower C) voltage D) current
B) horsepower
1. Pneumatic cylinders commonly use synthetic materials to provide a more positive seal at the relatively ______ pressures found in pneumatic systems. A) higher B) lower C) intermediate
B) lower
1. Hydrodynamic bearing lubrication has this characteristic after the journal reaches a certain _____ speed. A) maximum B) minimum C) maintained D)over drive
B) minimum
1. Environmental pollution in pneumatic systems occurs in the form of: A) dirt or dust B) noise and oil mists C) cavitation and aeration
B) noise and oil mists
With basic hydraulic systems, the pump pushes fluid out its discharge port, leaving a _______vacuum at its inlet. A) complete B) partial C) negative D) positive
B) partial
1. A left hand offset cuts from A) left to right B) right to left.
B) right to left.
1. When using a centrifugal shoe coupling it is critical to ensure that the: A) coupling is adequately lubricated .B) shafts are correctly aligned C) two parts of the centrifugal coupling are tightly bolted together. D) all of the above
B) shafts are correctly aligned
1. When cutting what angle determines how the chip flows over the face of the tool? A) end relief B) side rake C) back rack D) nose radius
B) side rake
1. Which of the following best describes a lain horizontal milling machine? A) the vertical orientation of the spindle allows it to use endmills B) table moves at only right angles to the spindle C) the saddle incorporates a saddle swivel housing D) meant for custom work
B) table moves at only right angles to the spindle
1. Centrifugal fans are classified according to: A) the volume of air movement .B) the shape and design of their impeller blades. C) the diameter of the discharge tube. D) all of the above.
B) the shape and design of their impeller blades.
1. The __________ of a liquid is the pressure at which a liquid will vaporize. A) cavitation B) vapour pressure C) aeration point D) laminar
B) vapour pressure
1. Where is a shoulder found on a workpiece? A) where two faces overlap B) where two different diameters meet C) the space exact diameters meet D) on a spot face
B) where two different diameters meet
1. In line check valves are available in a range of flows up to _____ gpm. A) 250 B) 165 C) 100 D) 87
C) 100
1. When using the EAT process on steel a general recommendation is to drive the fasteners no closer than ____mm from the edge of the steel. A) 50 B) 40 C) 15 D) 10
C) 15
1. When using a low velocity explosive actuated tool, set on the power level of 5, using a yellow load, what will the velocity of the pin be in metres per second? A) 229 B) 201 C) 174 D) 146
C) 174
1. With hydraulics, when applying sealant to a pipe thread it is important to avoid the first _____ from the end of the pipe. A) 4 B) 3 C) 2
C) 2
1. What is the standard stabilization temperature for deep grove ball bearings? A) 400 F B) 327 F C) 248 F D) 145
C) 248 F
1. A fire alarm system can provide how many types of signals? A) 5 B) 4 C) 3 D) 2
C) 3
1. The WHMIS system requires ____types of identification. A) 5 B) 4 C) 3 D) 2
C) 3
1. Given that a 4:1 ratio torque multiplier has an efficiency of 10% it would require ____ ft-lb to tighten a nut to 1600 ft-lb of torque. A) 160 B) 400 C) 444 D) 1600
C) 444
1. How hot should the heat source be that is used to heat Babbitt? A) 900 C B) 600 C C) 480 C D) 275 C
C) 480 C
1. With sequence valves what is the remedy for a valve where the second cylinder moves while the first cylinder is still moving. A) Correct the sticky spool B) Check to see if the primary port has been connected to the first cylinder C) Adjust the spring to a higher setting D) Ensure the external drain is connected
C) Adjust the spring to a higher setting
77. With piston rod packings which of the following material types has poor wear resistance? A) Steel B) Cast C) Bronze D) Stainless
C) Bronze
1. Using the Unified Thread classes which class is used on aerospace and precision tool applications? A) Class 1A B) Class 2A C) Class 3A
C) Class 3A
97. Which of the following impeller types would most likely be used for pumping clear liquids in a high head application? A) Open Impeller B) Semi-Open Impeller C) Closed Impeller D) Double Suction Impeller
C) Closed Impeller
1. Which of the following best describes a positive displacement compressor? A) It is designed to compress on both sides of the piston on both the forward and return strokes B) The functions is such that once the discharge pressure exceeds the discharge piping pressure a valve opens and allows the compressed gas to leave C) It works on the principle of trapping a specific volume then reducing that volume to get a higher pressure D) It looks and operates much like that of an engine
C) It works on the principle of trapping a specific volume then reducing that volume to get a higher pressure
1. Which of the following best describes displacement? A) Measured in G's B) Measured in inches per second or mm per second C) Measured peak to peak in units of mils D) Measured as a weight/ mass/vibration ratio
C) Measured peak to peak in units of mils
78. What type of filter is typically used on low flow rate compressors working in a clean environment? A) Paper B) Fabric C) Oil wetted labyrinth D) Oil batch
C) Oil wetted labyrinth
1. What is initial clearance? A) The total amount of clearance between the rolling elements and the raceway when one bearing is pushed as close to the other as possible B) The total amount of clearance between the rolling elements and the raceway when one bearing is moved away from the other in the axial direction C) The internal clearance of a bearing before it is mounted D) Factory specifications designed and tested at the factory E) The total amount of clearance between the rolling elements and the raceway when one bearing is moved away from the other in the radial direction
C) The internal clearance of a bearing before it is mounted
1. Which of the following best describes copper and brass pipe? A) It is used for its corrosion resistance but not at hydraulic pressures B) It can not be used for high pressure and high temperatures C) They offer excellent corrosion resistance but they catalyze the oxidation of hydraulic fluid D) It is mainly used in pipes that carry a corrosive product at high temperatures and pressure E) It is the most common material for making pipe
C) They offer excellent corrosion resistance but they catalyze the oxidation of hydraulic fluid
98. Which of the following best describes a high pressure conveyor vacuum system? A) They use rotary vane or sliding type compressors B) They use lobs or root type blowers C) They usually use plant air
C) They usually use plant air
The total volume of the cylinder of an engine divided by the clearance volume when the piston is at the BDC will give you the: A) clearance ratio. B) piston displacement. C) compression ratio. D) engine displacement.
C) compression ratio.
1. A coupling that could be used for a high torque and power application is the: A) sleeve coupling. B) roller chain coupling. C) flexible metal disc coupling. D) jaw and spider coupling.
C) flexible metal disc coupling.
1. When comparing a double pitch chain sprocket to a single pitch sprocket you will notice that the double pitch: A) looks larger than the single pitch. B) has teeth at double the angle. C) has two times the number of teeth in-between the links. D) has a double row of teeth.
C) has two times the number of teeth in-between the links.
1. Using the Unified thread designation a bolt has the following: 1/2 - 16 UNC - 2A The 16 on the above designation represents the: A) thread class. B) nominal size. C) number of threads per inch D) thread series - coarse.
C) number of threads per inch
86. The most common type of centrifugal pump used in industry is the: A) multiple stage barrel pump. B) multi-stage horizontal pump. C) single-stage end section pump. D) multi-stage double suction pump.
C) single-stage end section pump.
1. With pneumatic valves clearance of the spool and the bore is maintained between 0.002 to ____ mm A) 1.4 B) 0.4 C) 0.04 D) 0.004
D) 0.004
100. The production of iron from the blast furnace requires how many raw materials? A) 6 B) 5 C) 4 D) 3
D) 3
Never heat a sealed bearing above _____ Celsius A) 150 B) 120 C) 90 D) 80
D) 80
1. When performing maintenance on a screw compressor which component can be replaced on site? A) Separator elements. B) Check valves. C) Inlet valve. D) All of the above
D) All of the above
1. Which of the following WHMIS classifications are poisonous substances that are not immediately dangerous to the health? A) A B) B C) D,div-1 D) D, div-2
D) D, div-2
1. Which of the following is not a feature used to identify bearings with the ISO identification standard? A) The bearing type B) External dimensions C) Internal design, seals, cage material D) Gross weight
D) Gross weight
99. Which of the following best describes an in-line chute tripper? A) Used to load with a minimum spillage B) They tend to be flat and wider than most conveyor belts C) It allows the discharge of material from points along the length of a conveyor D) It controls placement of the material
D) It controls placement of the material
1. The efficiency of a gas turbine can be reduced by: A) contaminants in the engine air supply. B) abrasive particles eroding the blades. C) fuel not fully vaporized. D) all of the above.
D) all of the above.
1. Sometimes fans are connected in parallel to: A) increase the volume of air. B) increase the output pressure. C) compensate for long distances of air movement. D) be used as a backup fan.
D) be used as a backup fan.
1. Rooms housing ammonia refrigeration systems must be equipped with: A) adequate ventilation .B) emergency exits leading directly outside. C) opening windows .D) both A and B.
D) both A and B.
1. Using imperial thread designation a bolt has the following: 3/8 - 16 UNC x 11/4 The "C" on the above designation represents the: A) threads per inch. B) nominal size of thread C) length. D) coarse series.
D) coarse series.
1. Which of the following is not a characteristic of an upright drill machine? A) has a reservoir for cooling B) the spindle accepts drills with tapered shanks C) used for drilling larger holes D) equipped with a drill chuck only
D) equipped with a drill chuck only
1. A good application to use a lightweight chain is on: A) oil rigs. B) industrial conveyors. C) rock crushers. D) food handling equipment
D) food handling equipment
1. The width of a square key used on a two inch shaft should be approximately: A) one and a half inch. B) one inch. C) one-quarter of an inch. D) half an inch.
D) half an inch.
1. When overhauling a variable-speed wet disc drive it was found that the discs needed to be refinished by hand. This is done by: A) use of a course and then a fine file. B) lightly pressing onto a fine power grinder. C) hand dressing with a fine file then a wet paper. D) hand cross-dressing with #600 wet and dry paper.
D) hand cross-dressing with #600 wet and dry paper.
1. Referring to cylindrical roller bearings the cylindrical shape has a considerably _____ load area of contact than a ball bearing of the same diameter. A) smaller B) larger C) less machined D) more brittle
D) more brittle
1. Who is responsible for safety in the workplace? A) The employer B) The employee C) The general public D) All of the above
D)All of the above
Which of the following is an application for a hydrostatic bearing system? A) The machine tool industry B) Large radio telescopes whose journals operate at slow speeds C) Steam turbines D) Large electric motors E) Either a or b F) Either c or d
E) Either a or b
1. What causes aeration? A) High velocity particles striking surfaces B) Metal to metal contact C) High pump inlet vacuum D) Particles grinding between moving parts E) Gas bubbles in the fluid introduced from the outside F) Foreign substances in the fluid G) Repeated stressing of a surface
E) Gas bubbles in the fluid introduced from the outside
Which of the following best describes a free flow control valve? A) It is the simplest form of directional control allowing flow in one direction only B) They are used to prevent a load suspended by a cylinder from free fall C) They operate actuators at different times D) They make a humming sound when activated E) They control the rate of fluid flow in a hydraulic circuit
E) They control the rate of fluid flow in a hydraulic circuit
1. When selecting materials for a gasket the following should be taken into consideration: A) flange face design. B) pressures. C) flange face finish. D) temperatures. E) medium to be sealed. F) all of the above.
F) all of the above.
1. When drilling cast iron what cutting fluid should be used? A) soluble oil B) kerosene C) lard oil D) sulfur based E) mineral oil F) none of the above
F) none of the above
What are apprentices good for? A) Pms B) To bug the shop grouch C) To catch the grinding sparks with a bucket F) to use as a hammer D) All the above
F) to use as a hammer