Circuit Rescue
ElectricalFault-find and size a simple control circuit using Ohm's Law.
DiagnosticCanvas 2D12 min
Motor Control Rescue
Bring a tripping conveyor drive back online without guessing.
Difficulty: IntermediatePlay time: about 12 minutes
Play Motor Control Rescue nowOpens the full-screen game - or play in place below.
Workplace narrative
A critical conveyor drive has tripped twice this shift. The operators are frustrated and the line is backing up. The starter, the overload and the motor are all in the running - but which one is telling the truth? Work through the control circuit the way a controls electrician does: isolate, inspect, measure, and only then decide. Every minute matters, but a misdiagnosis means another trip - or worse.
Why this skill matters
Motor control is the heart of industrial electrical work. Strong scores here strengthen the Electrical, Instrumentation and Manufacturing automation pathways.
Learning objectives
- Trace a motor control circuit from start button to motor
- Diagnose starter, overload and control-voltage faults from symptoms
- Estimate motor full-load current for verification
- Apply the correct lockout and test sequence
Equipment and components
Three-phase induction motor (15 kW)Contactor starterThermal overload relayControl transformer (460 V to 120 V)Start/stop pushbuttonsClamp meter and multimeter
Technical principles
- The control circuit tells the power circuit when to connect
- Overloads protect the motor from sustained overcurrent, not short circuits
- A chattering contactor usually means control-voltage trouble
- Full-load current follows P = sqrt(3) x V x I x PF for three-phase loads
How to play
- Read each symptom set as a story about the circuit, not a single part
- For calculations, rearrange the three-phase power formula carefully
- Sequence questions test the order of safe troubleshooting - think safety first
- Review explanations even when correct; they reinforce the logic chain
Rules
- 10 points per question plus streak bonuses
- Hints cost 3 points
- Pass each level with 70% or more
Formula and calculation section
Three-Phase Power
P = sqrt(3) x V x I x PF
P (W) = 1.732 x line voltage x line current x power factor.
Full-Load Current (estimate)
I = P / (sqrt(3) x V x PF)
Rearranged from the power formula to estimate running current.
Need help with the mathematics?
Open the relevant mathematics module, practice the calculation, then return to the scenario.
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Play right here
The full game runs on this page - no account, no install. Or open the full-screen play mode with the button above.
Level 1/2Score 0Streak 0Hints 0
Your shift briefing
A critical conveyor drive has tripped twice this shift. The operators are frustrated and the line is backing up. The starter, the overload and the motor are all in the running - but which one is telling the truth? Work through the control circuit the way a controls electrician does: isolate, inspect, measure, and only then decide. Every minute matters, but a misdiagnosis means another trip - or worse.
Feedback approach
Explanations trace the fault path through the circuit, so wrong answers become lessons about how the starter and overload actually behave.
Common mistakes
- Resetting an overload without finding why it tripped
- Assuming a contactor fault before checking control voltage
- Forgetting the power factor when estimating motor current
- Testing live circuits without isolation and verification
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Keep learning
Return to the Electrical hub to see the full skill path.