Millwright Level 4 practice test review, 243 Questions with
100% Correct Answers | Verified | Updated 2024.
The best method of alignment to apply when shafts can not be axially secured is?
cross dialing
Sag corrections in dial setting are applied only to?
vertical rim readings
limitations in use of cross dialing methods include substantial brackets for long spans, less accuracy
over short spans, and?
both shafts must turn
optalign plus alignment requires the transducer assembly be mounted upon the?
primary equipment
depending on the fluid being pumped, pumps handling slurry or abrasives need an outside supply to
keep abrasives from the seal. what must be done?
the outside supply should be at least 10 psi over pump pressure
why is the crankcase ventilation system in an air compressor important?
maintains atmospheric pressure
the two main classes of compressors are?
positive displacement and dynamic
if the capacity of the reciprocating compressor has to be changed, it is done best by?
adjusting the clearance pocket valve
The purpose of camber in a chain conveyor is to?
hold chain against conveyor bottom
chain blocks are designed so that the top hook is?
stronger than the lower hook
The foundation of a machine subject to critical alignment is poured with the concrete level at a minus
elevation of?
3/4" - 1 1/2"
a cyclone on a pneumatic conveyor is a?
separator
,shock load on a bearing will result in the bearing becoming?
brinelled
finished grout should be kept wet for how long?
24 hours
the amount of taper on a NPT thread is?
3/4" per foot
A governor is a device that will control _________ of a prime mover under varying conditions of load.
speed
the number of teeth per inch of a hacksaw blade for general work is?
18 teeth
the Vee head of a combination set is frequently used to?
lay out center lines on the end of round stock
the best instrument for bisecting an angle in layout work is?
dividers
for lifting sharp edged objects use a?
grab chain
the degree of accuracy of a standard imperial micrometer is?
.001"
what is the first step to be completed when fitting a mandrel or journal to a newly poured babbitt
bearing?
relieve the edges (aka file)
the load carrying section of a v-belt is situated on the neutral axis of the belt, which is?
1/3 from the top of the belt
to measure vacuum on a fan inlet a ____________ is used?
pipe tube manometer
a gear having a pitch circle as a straight line is known as a?
rack gear
what causes a air clutch to engage slowly?
insufficient air volume
, gears that connect an intersecting shaft and have an equal number of teeth on each gear are called?
mitre gears
a spherical roller bearing is capable of?
sustaining high radial loads
the critical point of a rolling element bearing refers to?
the bearing speed
hydraulic pumps are rotary devices used for converting?
mechanical energy into hydraulic energy
to minimize the friction of the fluid in tubing, the bends should be?
2 1/2 to 3 times the tube diameter
the absolute rating of the filter element refers to the elements ______________ hole size.
largest
when two identical fluid motors are connected in parallel with each other, they will develop?
half the speed and twice the torque
fluid passing through a restrictor is subject to which law?
bernoulli
regeneration can only be achieved on?
advance stroke
to increase the volumetric output of a fixed displacement pump, you would?
speed up the prime mover
the type of pressure controls valves that require external drains are?
sequence and pressure reducing valve
a line used to denote unexposed detail on a blue print is called?
hidden line
what is the effect in a system when a hydraulic accumulator stops flow?
flow rate decreases
chain conveyors that are used in wet, corrosive, and heavy duty applications, usually use chain made
from?
manganese steel
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