EXTRON CONTROL SPECIALIST FINAL
TEST 2026 QUESTIONS WITH
CORRECT ANSWERS GRADED A+
◍ Turndown Ratio (Rangeability).
Answer: term that indicates the width of the operational range that a device
can measure or control with acceptable accuracy.Rtd = DRmax / DRmin
◍ Transformers.
Answer: static, passive devices that transfer electrical energy from one or
multiple electrical circuits to another through the principle of mutual
induction.
◍ Step-Up Transformer.
Answer: has a primary coil with fewer turns than does the secondary coil.
This arrangement increases the voltage and decreases the current in the
secondary coil.
◍ Step-Down Transformer.
Answer: has a primary coil with more turns that does the secondary coil.
This arrangement decreases the voltage and increases the current in the
secondary coil.
◍ Control Transformers.
Answer: step down voltage to the control circuit of a system or machine.
The most common are typically single phase, which have two primary coils
and one, two, or more secondary coils with different numbers of turns
wound onto the same frame.
◍ Parallel-Connected Coils.
Answer: Result in the effective number of primary turns acting as only one
coil.
,◍ Series-Connected Coils.
Answer: Result in the effective number of primary turns being added
together.
◍ Transformer Current from VA.
Answer: I = VA / V
◍ Interposing Relays.
Answer: used to isolate two different systems or devices because they have
different voltage types and magnitudes
◍ Unregulated Power Supply.
Answer: most basic and least expensive type, designed to produce a specific
voltage at a specific maximum output load current. Does not have the ability
to supply consistent voltage to a load.
◍ Regulated DC Power Supply.
Answer: includes a voltage regulator that keeps the voltage stable regardless
of changes to the input voltage or the amount of current consumed by the
load, up to is rated capacity.
◍ Linear Power Supply.
Answer: used when precise regulation and the removal of noise is most
important.
◍ Batteries.
Answer: voltaic (galvanic) devices, meaning they convert and store kinetic
electric energy into potential chemical energy by means of a chemical
reaction (charging). Then when required, the stored chemical energy can be
converted back to kinetic electrical energy (discharging)
◍ Units for Batteries.
Answer: rated in units of amp-hours (Ah). Defined as the amount of current
(amps) that a battery can discharge per hour over a 20-hour period.
◍ Batteries Connected in Series.
Answer: voltage is the sum of the batteriesamp-hour (current) capacity
, remains the sameinterconnections are positive on one battery to negative on
the nextEX: 2 each, 12V, 6Ah batteries connected = 24V, 6Ah (144 Watts)
◍ Batteries Connected in Parallel.
Answer: voltage is the same for all cellsamp-hour capacity is the sum of the
batteriesinterconnections are positive to positive and negative to
negative.EX: 2 each, 12V, 6Ah batteries connected = 12V, 12Ah (144
Watts)
◍ Batteries Connected in Series-Parallel.
Answer: allows for increasing both voltage and current capacitysystem has
sets of batteries with equal voltage and current capacities connected in both
combinationsEX: 4 each, 12V, 6Ah batteries (2 in series, 2 in parallel) =
24V, 12Ah (288 Watts)
◍ Over Current Protection Device (OCPD).
Answer: used to keep undesirable current, voltage, or power surge out of a
given part of an electrical circuit
◍ Overload.
Answer: condition where an overcurrent remains confined to its normal flow
path, but exceeds the rating of the conductors or connected devices
◍ Fault (Short Circuit).
Answer: condition where a current is unintentionally diverted out of its
normal flow path (by accident or malfunction) with little to no electrical
resistance to impede current flow.
◍ Fuses.
Answer: provide overcurrent protection by way of a metal wire or strip that
melts when too much current flows through it, thereby stopping or
interrupting the current
◍ Non-Current Limiting Fuses.
Answer: pass all of the fault current through to its full value before the fuse
opens
TEST 2026 QUESTIONS WITH
CORRECT ANSWERS GRADED A+
◍ Turndown Ratio (Rangeability).
Answer: term that indicates the width of the operational range that a device
can measure or control with acceptable accuracy.Rtd = DRmax / DRmin
◍ Transformers.
Answer: static, passive devices that transfer electrical energy from one or
multiple electrical circuits to another through the principle of mutual
induction.
◍ Step-Up Transformer.
Answer: has a primary coil with fewer turns than does the secondary coil.
This arrangement increases the voltage and decreases the current in the
secondary coil.
◍ Step-Down Transformer.
Answer: has a primary coil with more turns that does the secondary coil.
This arrangement decreases the voltage and increases the current in the
secondary coil.
◍ Control Transformers.
Answer: step down voltage to the control circuit of a system or machine.
The most common are typically single phase, which have two primary coils
and one, two, or more secondary coils with different numbers of turns
wound onto the same frame.
◍ Parallel-Connected Coils.
Answer: Result in the effective number of primary turns acting as only one
coil.
,◍ Series-Connected Coils.
Answer: Result in the effective number of primary turns being added
together.
◍ Transformer Current from VA.
Answer: I = VA / V
◍ Interposing Relays.
Answer: used to isolate two different systems or devices because they have
different voltage types and magnitudes
◍ Unregulated Power Supply.
Answer: most basic and least expensive type, designed to produce a specific
voltage at a specific maximum output load current. Does not have the ability
to supply consistent voltage to a load.
◍ Regulated DC Power Supply.
Answer: includes a voltage regulator that keeps the voltage stable regardless
of changes to the input voltage or the amount of current consumed by the
load, up to is rated capacity.
◍ Linear Power Supply.
Answer: used when precise regulation and the removal of noise is most
important.
◍ Batteries.
Answer: voltaic (galvanic) devices, meaning they convert and store kinetic
electric energy into potential chemical energy by means of a chemical
reaction (charging). Then when required, the stored chemical energy can be
converted back to kinetic electrical energy (discharging)
◍ Units for Batteries.
Answer: rated in units of amp-hours (Ah). Defined as the amount of current
(amps) that a battery can discharge per hour over a 20-hour period.
◍ Batteries Connected in Series.
Answer: voltage is the sum of the batteriesamp-hour (current) capacity
, remains the sameinterconnections are positive on one battery to negative on
the nextEX: 2 each, 12V, 6Ah batteries connected = 24V, 6Ah (144 Watts)
◍ Batteries Connected in Parallel.
Answer: voltage is the same for all cellsamp-hour capacity is the sum of the
batteriesinterconnections are positive to positive and negative to
negative.EX: 2 each, 12V, 6Ah batteries connected = 12V, 12Ah (144
Watts)
◍ Batteries Connected in Series-Parallel.
Answer: allows for increasing both voltage and current capacitysystem has
sets of batteries with equal voltage and current capacities connected in both
combinationsEX: 4 each, 12V, 6Ah batteries (2 in series, 2 in parallel) =
24V, 12Ah (288 Watts)
◍ Over Current Protection Device (OCPD).
Answer: used to keep undesirable current, voltage, or power surge out of a
given part of an electrical circuit
◍ Overload.
Answer: condition where an overcurrent remains confined to its normal flow
path, but exceeds the rating of the conductors or connected devices
◍ Fault (Short Circuit).
Answer: condition where a current is unintentionally diverted out of its
normal flow path (by accident or malfunction) with little to no electrical
resistance to impede current flow.
◍ Fuses.
Answer: provide overcurrent protection by way of a metal wire or strip that
melts when too much current flows through it, thereby stopping or
interrupting the current
◍ Non-Current Limiting Fuses.
Answer: pass all of the fault current through to its full value before the fuse
opens
