NOCTI ELECTRICAL EXAM PAPER 2025/2026 QUESTIONS
WITH SOLUTION GRADED A+
✔✔Louver/Bird Screen - ✔✔keeps out rain/snow, has wire mesh screen to keep out
birds and large insects
✔✔Dampers (Parallel and Opposed blades) - ✔✔-used to regulated airflow
-parallel: full open/full shut position applications
-opposed: airflow must be modulated; greater resistance
✔✔Damper Actuators - ✔✔-provide motive force to operate damper unit
-electric: unidirectional, spring/non-spring return, or reversible (rotary)
-pneumatic: uses air pressure from a controller as a signal
✔✔Heating Coils (preheat or heat coils) - ✔✔prevent build up of condensation in coils
✔✔Cooling Coils - ✔✔use chilled water, glycol, or refrigerant as cooling medium
✔✔DX Cooling (Direct expansion) - ✔✔no intermediate coolant, such as chilled water
✔✔Valves - ✔✔control flow of steam, water or gas through a variable orifice
-globe, butterfly, gate, mixing, and diverting valves
✔✔Variable Air Volume Systems (VAV) - ✔✔maintain constant supply air temp while
varying the supply air volume
✔✔Constant Volume Systems (CV) - ✔✔maintain a constant air volume and vary the
supply air temp
✔✔Point - ✔✔a piece of data, that represents objects that the system needs to monitor
or control (4 basic types)
✔✔Digital - ✔✔represents devices that have 2 conditions or 'states'
-e.g. on/off, open/closed, alarm/normal
✔✔Analog - ✔✔represents devices that can have a variable value expressed as
numbers
✔✔Inputs - ✔✔represents devices that send a signal to controller
✔✔Outputs - ✔✔represent the devices that the controller will control
✔✔Voltage Tester - ✔✔
, ✔✔Wire Stripper - ✔✔
✔✔Conduit Bender - ✔✔
✔✔Continuity Tester - ✔✔
✔✔Lineman's Pliers - ✔✔
✔✔Non-Metallic Cable Ripper - ✔✔
✔✔Multi-Tester or Volt-Ohm Meter - ✔✔
✔✔NM Cable Clamp - ✔✔
✔✔Long Nose Pliers - ✔✔
✔✔Fish Tape - ✔✔
✔✔Soldering Gun - ✔✔
✔✔Fuse Puller - ✔✔
✔✔Hickey - ✔✔
✔✔Armored Cable - ✔✔
✔✔Knockout Punch - ✔✔
✔✔Electric Soldering Iron - ✔✔
✔✔Knife Fuse - ✔✔
✔✔Solderless Connector - ✔✔
✔✔Plastic Tape - ✔✔
✔✔Circuit Breaker - ✔✔
✔✔Ground Rod - ✔✔
✔✔Ground Rod Clamp - ✔✔
✔✔Wire Nut - ✔✔
WITH SOLUTION GRADED A+
✔✔Louver/Bird Screen - ✔✔keeps out rain/snow, has wire mesh screen to keep out
birds and large insects
✔✔Dampers (Parallel and Opposed blades) - ✔✔-used to regulated airflow
-parallel: full open/full shut position applications
-opposed: airflow must be modulated; greater resistance
✔✔Damper Actuators - ✔✔-provide motive force to operate damper unit
-electric: unidirectional, spring/non-spring return, or reversible (rotary)
-pneumatic: uses air pressure from a controller as a signal
✔✔Heating Coils (preheat or heat coils) - ✔✔prevent build up of condensation in coils
✔✔Cooling Coils - ✔✔use chilled water, glycol, or refrigerant as cooling medium
✔✔DX Cooling (Direct expansion) - ✔✔no intermediate coolant, such as chilled water
✔✔Valves - ✔✔control flow of steam, water or gas through a variable orifice
-globe, butterfly, gate, mixing, and diverting valves
✔✔Variable Air Volume Systems (VAV) - ✔✔maintain constant supply air temp while
varying the supply air volume
✔✔Constant Volume Systems (CV) - ✔✔maintain a constant air volume and vary the
supply air temp
✔✔Point - ✔✔a piece of data, that represents objects that the system needs to monitor
or control (4 basic types)
✔✔Digital - ✔✔represents devices that have 2 conditions or 'states'
-e.g. on/off, open/closed, alarm/normal
✔✔Analog - ✔✔represents devices that can have a variable value expressed as
numbers
✔✔Inputs - ✔✔represents devices that send a signal to controller
✔✔Outputs - ✔✔represent the devices that the controller will control
✔✔Voltage Tester - ✔✔
, ✔✔Wire Stripper - ✔✔
✔✔Conduit Bender - ✔✔
✔✔Continuity Tester - ✔✔
✔✔Lineman's Pliers - ✔✔
✔✔Non-Metallic Cable Ripper - ✔✔
✔✔Multi-Tester or Volt-Ohm Meter - ✔✔
✔✔NM Cable Clamp - ✔✔
✔✔Long Nose Pliers - ✔✔
✔✔Fish Tape - ✔✔
✔✔Soldering Gun - ✔✔
✔✔Fuse Puller - ✔✔
✔✔Hickey - ✔✔
✔✔Armored Cable - ✔✔
✔✔Knockout Punch - ✔✔
✔✔Electric Soldering Iron - ✔✔
✔✔Knife Fuse - ✔✔
✔✔Solderless Connector - ✔✔
✔✔Plastic Tape - ✔✔
✔✔Circuit Breaker - ✔✔
✔✔Ground Rod - ✔✔
✔✔Ground Rod Clamp - ✔✔
✔✔Wire Nut - ✔✔
