MSSC
MSSC Maintenance Awareness Exam Questions
with Correct Answers 2026 Update
try the breaker again -Correct Answer ✔-The next step is to check the wiring to the
disconnect and try the breaker again.
True -Correct Answer ✔-The minimum number of sets of contacts a motor starter has
depends on the number of power leads the motor requires.
overload clutch -Correct Answer ✔-The type of overload protection that protects the
motor by disconnecting it physically instead of electrically.
Rt = R1 + R2 + R3 -Correct Answer ✔-The formula used to calculate total series
resistance.
Can be reset -Correct Answer ✔-An advantage of a circuit breaker over a fuse.
2 -Correct Answer ✔-For a high-voltage single-phase AC motor, only 2 motor wires
connect to the power lines.
Blow a fuse or trip a thermal overload -Correct Answer ✔-What event is most likely to
occur if a motor has an excessive load.
any -Correct Answer ✔-The total power in any electrical circuit is calculated by finding
the sum of the individual component power consumption.
provide a constant pressure to the circuit -Correct Answer ✔-A regulator is used in
pneumatics to provide a constant pressure to the circuit.
body composition -Correct Answer ✔-Not a standard way of describing a directional
control valve.
Use any container for compressed air -Correct Answer ✔-Not a pneumatic safety rule.
operator -Correct Answer ✔-The 3-way DCV spool is held in the energized position by
the operator.
element -Correct Answer ✔-Smaller dirt particles are removed from the air by the filter's
element.
Tee -Correct Answer ✔-A fitting that can connect two branch circuits to a single supply
line.
MSSC
,MSSC
Directional Control Valve -Correct Answer ✔-DCV stands for Directional Control Valve.
add atmospheric pressure to the gauge pressure -Correct Answer ✔-To convert gauge
pressure to absolute pressure, add atmospheric pressure to the gauge pressure.
A restriction -Correct Answer ✔-The schematic symbol shown represents a restriction.
7000 kPa -Correct Answer ✔-The maximum pressure that the gauge shown can
measure.
not passing -Correct Answer ✔-What condition is indicated by the block shown.
56 psi -Correct Answer ✔-What value is shown on the gauge.
Cylinder -Correct Answer ✔-The pneumatic component that provides straight line
motion.
Piston/Rod -Correct Answer ✔-The assembly that moves inside the barrel-shaped body
of a cylinder.
An increase in downstream pressure -Correct Answer ✔-What causes the poppet of a
pressure regulator to close.
Pa -Correct Answer ✔-The S.I. unit for pressure.
Both are considered fluid systems -Correct Answer ✔-Which is considered a fluid
system, pneumatics or hydraulics.
supply line and actuator line -Correct Answer ✔-The two types of conductors used in a
pneumatic system.
springs -Correct Answer ✔-The 5-port, 3-position DCV is held in the mid-position by the
springs.
there is a frequent need to connect and disconnect a hose -Correct Answer ✔-Industry
uses quick connect fittings when there is a frequent need to connect and disconnect a
hose.
Dust -Correct Answer ✔-Filters should be used on all pneumatic systems because
atmospheric air contains Dust.
Filters -Correct Answer ✔-Used to remove undissolved contaminates in hydraulic fluid.
MSSC
, MSSC
operator -Correct Answer ✔-The spool of a directional control valve is shifted to different
positions by the operator.
dirt holding capacity -Correct Answer ✔-The amount of dirt collected by a filter when the
pressure reaches a predetermined point.
hydraulic flow into mechanical energy -Correct Answer ✔-The hydraulic motor converts
hydraulic flow into mechanical energy.
rotary shaft speed -Correct Answer ✔-The speed at which a rotary shaft turns.
Strainer -Correct Answer ✔-Prevents large particles from damaging the pump and is
placed in the reservoir.
spin-on filter -Correct Answer ✔-A filter used for low pressure applications that has a
disposable cartridge that can be replaced.
Actuator -Correct Answer ✔-Not considered part of the power unit.
pumps -Correct Answer ✔-Most hydraulic motors are modified designs of this.
cap end -Correct Answer ✔-A double-acting cylinder will extend when oil flows into this.
bypass indicator -Correct Answer ✔-Can show when DHC of a filter has been reached.
Hydraulic filters -Correct Answer ✔-Rated by the size of contaminants they remove.
directional control valve -Correct Answer ✔-Used to change the direction of the fluid.
Liquid -Correct Answer ✔-Not shown in a hydraulic schematic.
Spring loaded -Correct Answer ✔-Not a type of hydraulic piston motor.
Pressure -Correct Answer ✔-Not considered one of the five basic components of a
hydraulic system.
pressure line filter -Correct Answer ✔-Designed to handle the full pressure of the
hydraulic system, using a replaceable cartridge and enclosed in a metal casing called a
bowl.
liquid -Correct Answer ✔-Hydraulics deals with the transmission and control of energy
by this.
MSSC
MSSC Maintenance Awareness Exam Questions
with Correct Answers 2026 Update
try the breaker again -Correct Answer ✔-The next step is to check the wiring to the
disconnect and try the breaker again.
True -Correct Answer ✔-The minimum number of sets of contacts a motor starter has
depends on the number of power leads the motor requires.
overload clutch -Correct Answer ✔-The type of overload protection that protects the
motor by disconnecting it physically instead of electrically.
Rt = R1 + R2 + R3 -Correct Answer ✔-The formula used to calculate total series
resistance.
Can be reset -Correct Answer ✔-An advantage of a circuit breaker over a fuse.
2 -Correct Answer ✔-For a high-voltage single-phase AC motor, only 2 motor wires
connect to the power lines.
Blow a fuse or trip a thermal overload -Correct Answer ✔-What event is most likely to
occur if a motor has an excessive load.
any -Correct Answer ✔-The total power in any electrical circuit is calculated by finding
the sum of the individual component power consumption.
provide a constant pressure to the circuit -Correct Answer ✔-A regulator is used in
pneumatics to provide a constant pressure to the circuit.
body composition -Correct Answer ✔-Not a standard way of describing a directional
control valve.
Use any container for compressed air -Correct Answer ✔-Not a pneumatic safety rule.
operator -Correct Answer ✔-The 3-way DCV spool is held in the energized position by
the operator.
element -Correct Answer ✔-Smaller dirt particles are removed from the air by the filter's
element.
Tee -Correct Answer ✔-A fitting that can connect two branch circuits to a single supply
line.
MSSC
,MSSC
Directional Control Valve -Correct Answer ✔-DCV stands for Directional Control Valve.
add atmospheric pressure to the gauge pressure -Correct Answer ✔-To convert gauge
pressure to absolute pressure, add atmospheric pressure to the gauge pressure.
A restriction -Correct Answer ✔-The schematic symbol shown represents a restriction.
7000 kPa -Correct Answer ✔-The maximum pressure that the gauge shown can
measure.
not passing -Correct Answer ✔-What condition is indicated by the block shown.
56 psi -Correct Answer ✔-What value is shown on the gauge.
Cylinder -Correct Answer ✔-The pneumatic component that provides straight line
motion.
Piston/Rod -Correct Answer ✔-The assembly that moves inside the barrel-shaped body
of a cylinder.
An increase in downstream pressure -Correct Answer ✔-What causes the poppet of a
pressure regulator to close.
Pa -Correct Answer ✔-The S.I. unit for pressure.
Both are considered fluid systems -Correct Answer ✔-Which is considered a fluid
system, pneumatics or hydraulics.
supply line and actuator line -Correct Answer ✔-The two types of conductors used in a
pneumatic system.
springs -Correct Answer ✔-The 5-port, 3-position DCV is held in the mid-position by the
springs.
there is a frequent need to connect and disconnect a hose -Correct Answer ✔-Industry
uses quick connect fittings when there is a frequent need to connect and disconnect a
hose.
Dust -Correct Answer ✔-Filters should be used on all pneumatic systems because
atmospheric air contains Dust.
Filters -Correct Answer ✔-Used to remove undissolved contaminates in hydraulic fluid.
MSSC
, MSSC
operator -Correct Answer ✔-The spool of a directional control valve is shifted to different
positions by the operator.
dirt holding capacity -Correct Answer ✔-The amount of dirt collected by a filter when the
pressure reaches a predetermined point.
hydraulic flow into mechanical energy -Correct Answer ✔-The hydraulic motor converts
hydraulic flow into mechanical energy.
rotary shaft speed -Correct Answer ✔-The speed at which a rotary shaft turns.
Strainer -Correct Answer ✔-Prevents large particles from damaging the pump and is
placed in the reservoir.
spin-on filter -Correct Answer ✔-A filter used for low pressure applications that has a
disposable cartridge that can be replaced.
Actuator -Correct Answer ✔-Not considered part of the power unit.
pumps -Correct Answer ✔-Most hydraulic motors are modified designs of this.
cap end -Correct Answer ✔-A double-acting cylinder will extend when oil flows into this.
bypass indicator -Correct Answer ✔-Can show when DHC of a filter has been reached.
Hydraulic filters -Correct Answer ✔-Rated by the size of contaminants they remove.
directional control valve -Correct Answer ✔-Used to change the direction of the fluid.
Liquid -Correct Answer ✔-Not shown in a hydraulic schematic.
Spring loaded -Correct Answer ✔-Not a type of hydraulic piston motor.
Pressure -Correct Answer ✔-Not considered one of the five basic components of a
hydraulic system.
pressure line filter -Correct Answer ✔-Designed to handle the full pressure of the
hydraulic system, using a replaceable cartridge and enclosed in a metal casing called a
bowl.
liquid -Correct Answer ✔-Hydraulics deals with the transmission and control of energy
by this.
MSSC
