CWEA Mechanical Tech Grade 1 (2025/2026
Latest Exam Prep) | Certified Mechanical
Technologist | Complete Study Guide &
Verified Practice Q&A
Confined Space - correct answerA space that:
-is large enough to enter and work.
-has limited or restricted means for entry.
-is not designed for continuous occupancy.
Hot Work Permit - correct answerAn employer's written authorization to perform work
capable of providing a source of ignition.
Inerting - correct answerA form of purging or ventilating a confined space where an inert
gas (such as nitrogen, carbon dioxide or argon) is used to displace the atmosphere in a
confined space to remove fire or explosion hazards. Causes oxygen levels to become
unstable for re-entry.
Oxygen Safe Zone - correct answer19.5% to 23.5%
Below 19.5=unsafe for breathing
Above 23.5=explosive
Leader Line - correct answerThe part or area of a drawing to which a number, note or
other reference applies. They are solid lines and usually terminate in a single
arrowhead.
Hydraulic Term:
"Resistance" - correct answerA construction in the bore of the pipe which requires more
pressure to pass the same amount of water.
Hydraulic Term:
"Voltage"
(Assume water is flowing horizontally so gravity isn't a factor) - correct answerElectric
potential is equivalent to pressure and the voltage (or voltage drop/potential difference)
is the difference in pressure between two points.
Hydraulic Term:
"Current" - correct answerEquivalent to a hydraulic volume flow rate; that is the
volumetric quantity of flowing water over time.
, Ohm's Law - correct answerCurrent through a conductor between two points is directly
proportional to the voltage across the two points.
S.O.P. - correct answerStandard operating procedure.
N.E.C. - correct answerNational Electrical Code.
N.F.P.A. - correct answerNational Fire Protection Association
NPT - correct answerNational pipe thread. Tapered pipe.
Compound Gauge - correct answerDisplays negative AND positive pressure
measurements
Cat1 Meter - correct answerMeasures electronics
Cat2 Meter - correct answerMeasures single-phase receptacles.
Cat3 Meter - correct answerMeasures 3 phase distribution and single phase lighting
equipment.
Cat4 Meter - correct answerMeasures 3 phase at utility connection and any outdoor
connections.
L.O.T.O. - correct answerLock out tag out is an osha regulation.
3 elements needed to start a fire. - correct answerHeat, oxygen and fuel.
Class C fire. - correct answerElectrical fire
What is Rust - correct answerCombination of water, oxygen and iron.
Micrometer Torque Wrench does what when setting is reached? - correct answerClicks.
V.F.D. - correct answerVariable frequency drive used for AC motor speed in hertz.
Bourdon Tube Gauge shape - correct answerC shaped.
1 PSI = ? feet of water. - correct answer2.31
Partial Flume - correct answerA device used to measure the flow in an open channel.
The flume narrows to a throat of fixed dimensions and then expands again. The rate of
flow can be calculated by measuring the difference in head (pressure) before and at the
throat of the flume.
Latest Exam Prep) | Certified Mechanical
Technologist | Complete Study Guide &
Verified Practice Q&A
Confined Space - correct answerA space that:
-is large enough to enter and work.
-has limited or restricted means for entry.
-is not designed for continuous occupancy.
Hot Work Permit - correct answerAn employer's written authorization to perform work
capable of providing a source of ignition.
Inerting - correct answerA form of purging or ventilating a confined space where an inert
gas (such as nitrogen, carbon dioxide or argon) is used to displace the atmosphere in a
confined space to remove fire or explosion hazards. Causes oxygen levels to become
unstable for re-entry.
Oxygen Safe Zone - correct answer19.5% to 23.5%
Below 19.5=unsafe for breathing
Above 23.5=explosive
Leader Line - correct answerThe part or area of a drawing to which a number, note or
other reference applies. They are solid lines and usually terminate in a single
arrowhead.
Hydraulic Term:
"Resistance" - correct answerA construction in the bore of the pipe which requires more
pressure to pass the same amount of water.
Hydraulic Term:
"Voltage"
(Assume water is flowing horizontally so gravity isn't a factor) - correct answerElectric
potential is equivalent to pressure and the voltage (or voltage drop/potential difference)
is the difference in pressure between two points.
Hydraulic Term:
"Current" - correct answerEquivalent to a hydraulic volume flow rate; that is the
volumetric quantity of flowing water over time.
, Ohm's Law - correct answerCurrent through a conductor between two points is directly
proportional to the voltage across the two points.
S.O.P. - correct answerStandard operating procedure.
N.E.C. - correct answerNational Electrical Code.
N.F.P.A. - correct answerNational Fire Protection Association
NPT - correct answerNational pipe thread. Tapered pipe.
Compound Gauge - correct answerDisplays negative AND positive pressure
measurements
Cat1 Meter - correct answerMeasures electronics
Cat2 Meter - correct answerMeasures single-phase receptacles.
Cat3 Meter - correct answerMeasures 3 phase distribution and single phase lighting
equipment.
Cat4 Meter - correct answerMeasures 3 phase at utility connection and any outdoor
connections.
L.O.T.O. - correct answerLock out tag out is an osha regulation.
3 elements needed to start a fire. - correct answerHeat, oxygen and fuel.
Class C fire. - correct answerElectrical fire
What is Rust - correct answerCombination of water, oxygen and iron.
Micrometer Torque Wrench does what when setting is reached? - correct answerClicks.
V.F.D. - correct answerVariable frequency drive used for AC motor speed in hertz.
Bourdon Tube Gauge shape - correct answerC shaped.
1 PSI = ? feet of water. - correct answer2.31
Partial Flume - correct answerA device used to measure the flow in an open channel.
The flume narrows to a throat of fixed dimensions and then expands again. The rate of
flow can be calculated by measuring the difference in head (pressure) before and at the
throat of the flume.
