NOCTI Maintenance Study Guide with
questions and well verified answers actual
exam!!! 2026
Hydraulic energy is primarily directed and controlled by A. cylinders B. electricity C. pumps D.
valves - ANSWER -D. valves
Why are wear strips used in high - speed manufacturing operations ? A. reduce wear on costly
machine parts B. help a machine to wear evenly C. compensate for machine wear D. reinforce
parts that are fragile - ANSWER -A. reduce wear on costly machine parts.
When machining a rectangular part on a milling machine , to finish the third side must be
placed in the vise against A. the moveable jaw B. the solid jaw C. the base D. a pair of parallels -
ANSWER -B. The solid Jaw
Abrasive cutoff saws separate material by grinding . This makes them valuable for cutting A.
nonferrous metals B. extremely tough or hardened material C. internal contours D. external
radii - ANSWER -B. Extremely tough or hardened Material
At each pneumatic work station , the proper sequence of components is which of the following
? A. lubricator - regulator - filter C. filter - regulator - lubricator B. regulator - lubricator - filter
D. lubricator - filter - regulator - ANSWER -C. Filter-Regulator-Lubricator
Thrusts loads are ______ to a shaft A. at a right angle B. at 30 degrees C. parallel D. usually
damaging - ANSWER -C. parallel
, Copper tubing can be best cleaned by using A , a file B. sandpaper C. acid D. steel wool -
ANSWER -D. steel wool
Two mating parts are to - ANSWER -Related by their fit
The " formula " for a 45 degree offset is A. 1.013 B. 1.406 C. 1.414 D. 3.140 - ANSWER -C.
1.414
How many positions does a spring centered valve have A. one B. two C. three D. four -
ANSWER -C. three
If you want to check the run out of a shaft , the best tool to use would be A. Jo blocks B. a
micrometer C. a vernier caliper D. an indicator - ANSWER -D. an indicator
The seal in a centrifugal pump may be necessary to prevent 1. fluid from leaking out around
the shaft- 2. B. fluid from leaking out around the flange 3. C. air from leaking into the pump 4.
D. both A and C - ANSWER -1. fluid from leaking out around shaft
The valve type that should be used to control a single acting cylinder is 1. a two - way 2 a three
- way 3. a four - way 4. any of the above - ANSWER -2 a three - way
The magnet that turns inside the motor is the Arotor B.stator C. coil D. bell - ANSWER -
B.Stator
When a regulator is attached to a fully charged cylinder of oxygen , the tank cylinder valve
should be opened very slowly to prevent A. damage to the safety pressure release valve B. a
loss of oxygen in case of a leak at the connections C. damage to the regulator from the sudden
high pressure D. dirt from entering the regulator suddenly - ANSWER -C. Damage to the
regulator from the sudden high pressure
A globe valve may be used as a flow control valve because A. it will flow in one direction only
B. it may be operated partially open C. Its stem does not rise when it opened D. either side
may be used as the pressure side - ANSWER -B. It may be operated partially open
questions and well verified answers actual
exam!!! 2026
Hydraulic energy is primarily directed and controlled by A. cylinders B. electricity C. pumps D.
valves - ANSWER -D. valves
Why are wear strips used in high - speed manufacturing operations ? A. reduce wear on costly
machine parts B. help a machine to wear evenly C. compensate for machine wear D. reinforce
parts that are fragile - ANSWER -A. reduce wear on costly machine parts.
When machining a rectangular part on a milling machine , to finish the third side must be
placed in the vise against A. the moveable jaw B. the solid jaw C. the base D. a pair of parallels -
ANSWER -B. The solid Jaw
Abrasive cutoff saws separate material by grinding . This makes them valuable for cutting A.
nonferrous metals B. extremely tough or hardened material C. internal contours D. external
radii - ANSWER -B. Extremely tough or hardened Material
At each pneumatic work station , the proper sequence of components is which of the following
? A. lubricator - regulator - filter C. filter - regulator - lubricator B. regulator - lubricator - filter
D. lubricator - filter - regulator - ANSWER -C. Filter-Regulator-Lubricator
Thrusts loads are ______ to a shaft A. at a right angle B. at 30 degrees C. parallel D. usually
damaging - ANSWER -C. parallel
, Copper tubing can be best cleaned by using A , a file B. sandpaper C. acid D. steel wool -
ANSWER -D. steel wool
Two mating parts are to - ANSWER -Related by their fit
The " formula " for a 45 degree offset is A. 1.013 B. 1.406 C. 1.414 D. 3.140 - ANSWER -C.
1.414
How many positions does a spring centered valve have A. one B. two C. three D. four -
ANSWER -C. three
If you want to check the run out of a shaft , the best tool to use would be A. Jo blocks B. a
micrometer C. a vernier caliper D. an indicator - ANSWER -D. an indicator
The seal in a centrifugal pump may be necessary to prevent 1. fluid from leaking out around
the shaft- 2. B. fluid from leaking out around the flange 3. C. air from leaking into the pump 4.
D. both A and C - ANSWER -1. fluid from leaking out around shaft
The valve type that should be used to control a single acting cylinder is 1. a two - way 2 a three
- way 3. a four - way 4. any of the above - ANSWER -2 a three - way
The magnet that turns inside the motor is the Arotor B.stator C. coil D. bell - ANSWER -
B.Stator
When a regulator is attached to a fully charged cylinder of oxygen , the tank cylinder valve
should be opened very slowly to prevent A. damage to the safety pressure release valve B. a
loss of oxygen in case of a leak at the connections C. damage to the regulator from the sudden
high pressure D. dirt from entering the regulator suddenly - ANSWER -C. Damage to the
regulator from the sudden high pressure
A globe valve may be used as a flow control valve because A. it will flow in one direction only
B. it may be operated partially open C. Its stem does not rise when it opened D. either side
may be used as the pressure side - ANSWER -B. It may be operated partially open
