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Millwright Interprovincial (Red Seal) Review Exam 3
- How is efficiency found? output over input input over output output times input times 100 output times input divided by hp: A) Output over input
- What is the maximum capacity in kg of a heavy duty ladder? 136 113 102 91: B) . Worn ring grooves on an engine piston will cause: the rings to rock back and forth. combustion gases to blow by the rings into the crankshaft. oil consumption. all of the above.: D) All the above What is feed back? The term used when a signal that is derived from an amplifier is sent back to the position measuring device at the solenoid or actuator The term used when a signal that is derived from a position measuring device at the solenoid or actuator is sent back to the amplifier card The wave form kick emitted from an inductive loads with a DC supply Harmonic activity associated with noise from AC waveforms: B) The term used when a signal that is derived from a position measuring device at the solenoid or
actuator is sent back to the amplifier card
- What should be checked if a motor has a loss of power? Internal leaks in valve spool or in cylinders, vane tips or gears Internal leaks in cylinders, vane tips or gear teeth and case Relief valve setting too low Cavitation Misalignment Bearings: C) Relief valve setting too low Environmental pollution in pneumatic systems occurs in the form of: dirt or dust noise and oil mists cavitation and aeration: B) noise and oil mist
- Which of the following is a possible cause of pressure relief valve prob- lems? Incorrect adjustment Damaged or worn valves
electrical input. True False: B) False The purpose of a pre-lube pump on an industrial engine is to: quickly pressurize the main oil pump as soon as the engine starts. maintain oil pressure even when the engine is idling. continue to pump oil and cool the engine after it has been turned off. get oil to critical engine parts before the engine turns over.: D) get oil to critical engine parts before the engine turns over. What is full film thickness? Lubrication that is achieved at operating speeds When fluids begins to flood the valleys between surfaces When only irregularities of the inside of a machine are coated
A lubrication that separates two surfaces that deform under load: A) Lubri- cation that is achieved at operating speeds
- When lockout on a piece of equipment occurs it must remove: electrical power. hydraulic pressure. pneumatic pressure. all of the above.: D) All the above When shaft alignment is performed it can be accomplished by using the method of: laser alignment. cross dialing. rim and face. all of the above.: D) all the above
- What causes reaction blades to rotate when they are used on a gas turbine? The blades are closer at the end then the front so as gas passes through it is accelerated. The gas hits the blades and causes a change in direction. They are mechanically turned to increase the speed. They do not turn, they are always stationary.: A) The blades are closer at the end then the front so as gas passes through its accelerated. The type of oil filter that is made of many copper or bronze plates stacked on top of each other is the filter. surface depth edge
When the contacts close the lamp illuminates. The core attracts the armature. 1,3,2,4, 3,2,5,1, 3,5,2,1, 2,3,1,5,4: B) 3,2,5,1, If phase readings at both ends of the rotor are the same then a imbalance condition exists. dynamic static couple: B) static Which of the following is true with respect to using oil as lubrication? It is more convenient to retain It contains contaminants It carries away heat Cannot permit high speeds: C) It carries away heat Which of the following best describes an axial labyrinth seal? It can only tolerate very limited axial and radial movements It is the simplest and cheapest It does not alter widths of gaps allowing them to be very small: C) it does not alter widths of gaps allowing them to be very small Which of the following best describes a matched set bearing? Can not be used in random order Can be installed back to back or face to face It has a 30 or 32 degree contact angle
It can handle reversing thrust loads in either direction It is designed for pure thrust load only: A) Can not be used in random order
- During housing inspection while installing bearings, if the bore does not have any visible damage, the bore should measure out to an accuracy of inch? 1
0.001: D)0. The type of insulation used for temperature above 815 degrees Celsius is called: cryogenic. thermal.
metric module English module: B) Circular Pitch
- Case nut die should only be used to: produce extra fine threads. recondition threads. clean threads. both B and C.: D) both B and C The type of contour hacksaw blade that would be best for cutting a straight accurate cut in non-ferrous metals would be: a high carbon steel blade. a tungsten carbide blade. a bimetal blade. all of the above.: A) a high carbon steel blade
An application such as brewing and distillation equipment would require a: high HP coupling. low HP coupling.: B) low HP coupling
- The tool rest on a bench grinder should be adjusted so that there is no more than of an inch between the grinding wheel and the rest. 3/ 1/ 1/ 1/8: D) 1/ What are a majority of rider rings made of? Cast Teflon Tin Bronze Aluminum: B) Teflon
- For every 20 degree Celsius rise in temperature, the air has the ability to hold about times as much moisture. two three four five: A) Two What is the maximum force in pounds that can be exerted in a perfect vacuum? 23
RPM
The number of cylinders: C) RPM
- How many styles of milling cutter are there? 5 4 3 2: B)
- The principle symptoms of pump are excessive noise and vibration of the pump. circulation operation induction cavitation: D) Cavitation
- What is the purpose of parallels used with drilling? used keep the bit straight used to raise the work piece they are part of a strap clamp used to support the back end of a strap clamp: B) Used to raise the work piece
- A temperature probe that can be used to shut the compressor system down in the case of a malfunction would be best placed in the: air intake valve. oil reservoir. water separator. compressor discharge.: D) Compressor discharge if the air flow from a fan is straight, basically parallel to the fan shaft, then the
fan is a/an: radial fan. axial fan. centrifugal fan. down draft fan.: B) Axial Fan
- Which of the following lathe dogs can be used on larger diameters? safety clamp straight tail standard bent tail clamp: D) Clamp A plunger pump is a single-acting pump. True False: A) True
When tempering, what color should be used to identify uses with shear blades? dark blue violet purple brown dark straw light straw: D) Brown
- A dial indicator is used for aligning a piece of equipment. If the plunger rod extends out of the dial a reading is displayed. positive negative: B)Negative
- The power source recommended for use on GMAW is: DC constant current. DC constant voltage. AC reverse polarity. AC high frequency.: B) DC constant voltage.
- A pitch is designed for the movement of free flowing material. double variable long half short: C) Long
- When mixing concrete grout to be used for an area up to four inches thick the normal grout mixture would be: 2 parts cement, 2 parts sand and 3 parts aggregate .B) 3 parts cement, 2 parts sand and 1 part aggregate. 1 part cement, 2 parts sand and 2 parts aggregate. 1 part cement, 2 parts sand and 3 parts aggregate.: D) 1 part cement, 2 parts sand and 3 parts aggregate.
- What safety factor is used for wire rope used for public elevators? 30- 20- 10- 5-1: B) 20-
- Data from ultrasonic testing can be used to predict component failure. True
decreases stays the same: B) decreases
- Depending on the type of sling and hook-up, the capacity of the double ply sling may be 140 to % of the capacity of single ply. 500 325 200 150: C) 200 When referring to an absorption dryer, the most common type of deliques- cent is: calcium carbonate. calcium chloride. silica gel. activated alumina.: B) calcium chloride.
- Span blocking is not recommended with cranes. True False: A) True When referring to relative humidity, one pound of water is equal to grains of water. 70 700 7000 70 000: C) 7000
