1|Page
BCTC INDUSTRIAL MAINTENANCE
TECHNOLOGY AMTEC (NOCTI
MECHATRONIC) REVIEW 2026||CERTIFIED
Q&A
An interlock prevents two of the three phases on a reversing motor from shorting
by doing what? - correct-answer -Preventing the opposite coil from shutting it's
contacts when a coil is energized.
Wire labelled THW means it has what characteristics? - correct-answer -
Thermoplastic insulated, heat resistant, damp and wet location.
What is happening in the circuit when the fuse fails? - correct-answer -Too much
current for too long.
,2|Page
A wire's gauge is a measure of what? - correct-answer -The number of dies the
wire was drawn through.
How can you reverse motor direction? - correct-answer -Switch leads T1 and T3.
What are the characteristics of a small diameter wire vs a large diameter wire? -
correct-answer -Small diameter wire has a smaller ampacity than large diameter
wire.
The period of a given AC waveform is the time for one __________? - correct-
answer -Full cycle
Every digital multimeter can measure which three basic elements? - correct-
answer -Current, voltage, and resistance.
,3|Page
If the voltage source supplies 260 volts and the resistance measures 5 ohms, the
current is what? - correct-answer -I = E/R -> I = 260/5 -> I= 52A
In an AC circuit, if resistance remains the same and voltage is doubled, the
current... - correct-answer -Is doubled
What aspect of a waveform does an oscilloscope display? - correct-answer -
Voltage vs Time.
The approximate peak-to-peak value of an alternating current signal that
measures 240V RMS is?
Vptp = 2.828*Vrms - correct-answer -Vptp = 2.828*240 = 678.72V
, 4|Page
What is the direction of electron movement across poles? - correct-answer -Neg.
to Pos.
If four 1000 ohm resistors are placed in parallel and then connected to a 100V AC
power supply, what is power dissipated by one of the resistors?
P= (V*V)/R - correct-answer -P= (100*100)/1000= 10W
When measuring an AC voltage with a digital multimeter, what value is typically
shown on the display? - correct-answer -RMS value.
An electronic device runs on a 36-volt supply and takes 11 amps. What is it's
power?
P= E*I - correct-answer -P= 36*11= 396W
An ohmmeter is used to measure... - correct-answer -Resistance.
BCTC INDUSTRIAL MAINTENANCE
TECHNOLOGY AMTEC (NOCTI
MECHATRONIC) REVIEW 2026||CERTIFIED
Q&A
An interlock prevents two of the three phases on a reversing motor from shorting
by doing what? - correct-answer -Preventing the opposite coil from shutting it's
contacts when a coil is energized.
Wire labelled THW means it has what characteristics? - correct-answer -
Thermoplastic insulated, heat resistant, damp and wet location.
What is happening in the circuit when the fuse fails? - correct-answer -Too much
current for too long.
,2|Page
A wire's gauge is a measure of what? - correct-answer -The number of dies the
wire was drawn through.
How can you reverse motor direction? - correct-answer -Switch leads T1 and T3.
What are the characteristics of a small diameter wire vs a large diameter wire? -
correct-answer -Small diameter wire has a smaller ampacity than large diameter
wire.
The period of a given AC waveform is the time for one __________? - correct-
answer -Full cycle
Every digital multimeter can measure which three basic elements? - correct-
answer -Current, voltage, and resistance.
,3|Page
If the voltage source supplies 260 volts and the resistance measures 5 ohms, the
current is what? - correct-answer -I = E/R -> I = 260/5 -> I= 52A
In an AC circuit, if resistance remains the same and voltage is doubled, the
current... - correct-answer -Is doubled
What aspect of a waveform does an oscilloscope display? - correct-answer -
Voltage vs Time.
The approximate peak-to-peak value of an alternating current signal that
measures 240V RMS is?
Vptp = 2.828*Vrms - correct-answer -Vptp = 2.828*240 = 678.72V
, 4|Page
What is the direction of electron movement across poles? - correct-answer -Neg.
to Pos.
If four 1000 ohm resistors are placed in parallel and then connected to a 100V AC
power supply, what is power dissipated by one of the resistors?
P= (V*V)/R - correct-answer -P= (100*100)/1000= 10W
When measuring an AC voltage with a digital multimeter, what value is typically
shown on the display? - correct-answer -RMS value.
An electronic device runs on a 36-volt supply and takes 11 amps. What is it's
power?
P= E*I - correct-answer -P= 36*11= 396W
An ohmmeter is used to measure... - correct-answer -Resistance.
