Millwright NCCER Exam Questions and
Answers with Verified Solutions | Latest
Updated 2026
One type of common gearbox is A) Right-angle drive
the
_________.
A) right -angle drive
B) bevel box
C) fluid drive
D) triangle drive
Double helical gears are especially A) Shock and vibration
effective in applications where
__________ are problems.
A) shock and vibration
B) different helical angles
C) misalignments
D) multiple gear sets
Destructive pitting occurs on a D) Pitch Line
gear
on one side or the other of the
_______.
A) root
B) whole depth
C) tip
D) pitch line
,Pressure is normally measured in D) Pounds per square inch
___________.
A) pounds of force
B) foot-pounds
C) inch-pounds
D) pounds per square inch
The distance from the tip of a gear B) Major Diameter
tooth on one side of a gear to the
tip
of a tooth on the opposite side of
the gear is called the
____________.
A) whole depth
B) major diameter
C) pitch diameter
D) major circumference
The Pistons in a two-piston C) Can move together or separately
cylinder
_____________.
A) always move together
B) are called dual pistons
C) can move together or
separately
D) do not move when the pressure
is
too high
, Engaged gears always have the B) Surface speed
same _____________.
A) number of teeth
B) surface speed
C) failure rate
D) rpm
The combination of hydraulic fluid B) oxidation
and air is called ___________.
A) air absorption
B) oxidation
C) emulsion
D) foaming
When properly designed and C) worm
lubricated, ____________ gears
are the
smoothest.
A) helical
B) bevel
C) worm
D) spur
Hydraulic lines must be D) sized
___________ so
that energy will be transmitted
effectively throughout the system.
A) rigid
B) thin
C) flexible
D) sized
Answers with Verified Solutions | Latest
Updated 2026
One type of common gearbox is A) Right-angle drive
the
_________.
A) right -angle drive
B) bevel box
C) fluid drive
D) triangle drive
Double helical gears are especially A) Shock and vibration
effective in applications where
__________ are problems.
A) shock and vibration
B) different helical angles
C) misalignments
D) multiple gear sets
Destructive pitting occurs on a D) Pitch Line
gear
on one side or the other of the
_______.
A) root
B) whole depth
C) tip
D) pitch line
,Pressure is normally measured in D) Pounds per square inch
___________.
A) pounds of force
B) foot-pounds
C) inch-pounds
D) pounds per square inch
The distance from the tip of a gear B) Major Diameter
tooth on one side of a gear to the
tip
of a tooth on the opposite side of
the gear is called the
____________.
A) whole depth
B) major diameter
C) pitch diameter
D) major circumference
The Pistons in a two-piston C) Can move together or separately
cylinder
_____________.
A) always move together
B) are called dual pistons
C) can move together or
separately
D) do not move when the pressure
is
too high
, Engaged gears always have the B) Surface speed
same _____________.
A) number of teeth
B) surface speed
C) failure rate
D) rpm
The combination of hydraulic fluid B) oxidation
and air is called ___________.
A) air absorption
B) oxidation
C) emulsion
D) foaming
When properly designed and C) worm
lubricated, ____________ gears
are the
smoothest.
A) helical
B) bevel
C) worm
D) spur
Hydraulic lines must be D) sized
___________ so
that energy will be transmitted
effectively throughout the system.
A) rigid
B) thin
C) flexible
D) sized
