GUARD CARD FINAL &
ANDSWERS COMPREHENSIVE STUDY
GUIDE 2026 FULL QUESTIONS AND
SOLUTIONS GRADED A+
◍ Bull rope.
Answer: Endless looped rope powering early elevators
◍ Floor stop accuracy.
Answer: Improvement in AC motor elevators over DC
◍ American Society of Mechanical Engineers.
Answer: Regulatory body for US elevator operations
◍ Straight line wiring diagram.
Answer: Uses lines and symbols for electrical circuits
◍ VOM multimeter.
Answer: Volt, ohms, and milliampere measuring device
◍ Capacitor.
Answer: Stores and discharges electrical energy
◍ 10k ohm resistor.
Answer: Safely discharges electrical energy from a capacitor
◍ Selective collective control.
Answer: Elevator system not changing direction until highest call answered
◍ Contact wipe.
Answer: Rubbing motion to keep relay contacts clean
◍ Magnetic field.
, Answer: Generated by relay coil to pull armature
◍ Plug type relay.
Answer: Most common relay design
◍ Electrical interlock.
Answer: Prevents multiple relays from energizing simultaneously
◍ Diode.
Answer: Allows current flow in one direction
◍ Dashpots.
Answer: Timers using oil flow for tripping time control
◍ Shunt trip circuit breaker.
Answer: Used in machine rooms with sprinkler systems
◍ Fuses.
Answer: Current limiting devices for electrical circuits
◍ Transformer.
Answer: Device that increases/decreases voltage
◍ Full wave rectifier.
Answer: Converts AC to DC, producing direct current
◍ Exciters.
Answer: Self-excited generators with shunt and series fields
◍ SCR drives and VVVF drives.
Answer: Convert AC to DC for motor control
◍ AC elevator brakes.
Answer: Early brakes inferior to DC brakes
◍ Elevator logic sequence.
Answer: Similar across systems, differing in input/output functions
◍ Final limit.
Answer: Stops elevator from moving too far past landings
ANDSWERS COMPREHENSIVE STUDY
GUIDE 2026 FULL QUESTIONS AND
SOLUTIONS GRADED A+
◍ Bull rope.
Answer: Endless looped rope powering early elevators
◍ Floor stop accuracy.
Answer: Improvement in AC motor elevators over DC
◍ American Society of Mechanical Engineers.
Answer: Regulatory body for US elevator operations
◍ Straight line wiring diagram.
Answer: Uses lines and symbols for electrical circuits
◍ VOM multimeter.
Answer: Volt, ohms, and milliampere measuring device
◍ Capacitor.
Answer: Stores and discharges electrical energy
◍ 10k ohm resistor.
Answer: Safely discharges electrical energy from a capacitor
◍ Selective collective control.
Answer: Elevator system not changing direction until highest call answered
◍ Contact wipe.
Answer: Rubbing motion to keep relay contacts clean
◍ Magnetic field.
, Answer: Generated by relay coil to pull armature
◍ Plug type relay.
Answer: Most common relay design
◍ Electrical interlock.
Answer: Prevents multiple relays from energizing simultaneously
◍ Diode.
Answer: Allows current flow in one direction
◍ Dashpots.
Answer: Timers using oil flow for tripping time control
◍ Shunt trip circuit breaker.
Answer: Used in machine rooms with sprinkler systems
◍ Fuses.
Answer: Current limiting devices for electrical circuits
◍ Transformer.
Answer: Device that increases/decreases voltage
◍ Full wave rectifier.
Answer: Converts AC to DC, producing direct current
◍ Exciters.
Answer: Self-excited generators with shunt and series fields
◍ SCR drives and VVVF drives.
Answer: Convert AC to DC for motor control
◍ AC elevator brakes.
Answer: Early brakes inferior to DC brakes
◍ Elevator logic sequence.
Answer: Similar across systems, differing in input/output functions
◍ Final limit.
Answer: Stops elevator from moving too far past landings
