Page 1 of 104
Ontario (EDM-B) Elevating Devices Mechanic Certification
Exam ACTUAL EXAM COMPLETE QUESTIONS AND CORRECT
ANSWERS LATEST UPDATE THIS YEAR
Ontario Elevating Devices Mechanic (EDM-B) Certification Exam
Technical Standards and Safety Authority
ACTUAL EXAM COVERAGE (ALL CONTENTS TESTED)
1. Electrical Systems
• AC/DC theory, Ohm’s Law
• Motors, relays, contactors
• Elevator control circuits
• Troubleshooting electrical faults
2. Mechanical Systems
• Hoisting machinery (geared & gearless machines)
• Hydraulic systems (pumps, cylinders, valves)
• Brakes, sheaves, bearings
3. Elevator Components
• Controllers and drives
• Doors (operators, interlocks, sensors)
• Ropes, chains, counterweights
• Safety devices (governor, safeties, buffers)
4. Codes & Standards
• CSA B44 Safety Code for Elevators
• TSSA regulations
• Lockout/Tagout procedures
5. Installation & Maintenance
• Preventive maintenance
• Inspection procedures
• Lubrication and adjustments
6. Troubleshooting
• Fault diagnosis
• Systematic testing
• Electrical and mechanical failures
7. Safety
• Personal protective equipment (PPE)
• Fall protection
• Hazard identification
1.
, Page 2 of 104
During troubleshooting, an elevator motor fails to start even though power is present at the main
disconnect. What is the most likely next component to inspect?
A. Car lighting circuit
B. Motor starter or contactor control circuit
C. Counterweight frame
D. Door panel alignment
Answer: B
Rationale: If power reaches the disconnect but motor does not start, the issue is typically in the control
circuit such as a contactor or starter.
2.
An elevator car stops slightly above the floor level consistently during upward travel. What is the most
probable cause?
A. Excess lubrication
B. Incorrect leveling sensor or switch calibration
C. Broken counterweight
D. Door interlock failure
, Page 3 of 104
Answer: B
Rationale: Leveling accuracy depends on sensors; misalignment or calibration issues cause overtravel or
undertravel.
3.
A hydraulic elevator shows slow upward movement but normal downward speed. What is the likely
issue?
A. Faulty brake
B. Pump inefficiency or internal leakage
C. Counterweight imbalance
D. Door misalignment
Answer: B
Rationale: Upward motion depends on hydraulic pressure; inefficiency or leakage reduces lifting speed.
4.
During inspection, a wire rope shows broken wires concentrated in one section. What action is
required?
, Page 4 of 104
A. Continue use
B. Replace the rope immediately
C. Lubricate only
D. Reduce load
Answer: B
Rationale: Concentrated wire breaks indicate fatigue and require immediate removal from service.
5.
An elevator door fails to close completely, preventing the car from moving. What component is most
likely responsible?
A. Governor
B. Door interlock switch
C. Counterweight
D. Hoist motor
Answer: B
Rationale: The system prevents motion unless door interlocks confirm doors are fully closed.
Ontario (EDM-B) Elevating Devices Mechanic Certification
Exam ACTUAL EXAM COMPLETE QUESTIONS AND CORRECT
ANSWERS LATEST UPDATE THIS YEAR
Ontario Elevating Devices Mechanic (EDM-B) Certification Exam
Technical Standards and Safety Authority
ACTUAL EXAM COVERAGE (ALL CONTENTS TESTED)
1. Electrical Systems
• AC/DC theory, Ohm’s Law
• Motors, relays, contactors
• Elevator control circuits
• Troubleshooting electrical faults
2. Mechanical Systems
• Hoisting machinery (geared & gearless machines)
• Hydraulic systems (pumps, cylinders, valves)
• Brakes, sheaves, bearings
3. Elevator Components
• Controllers and drives
• Doors (operators, interlocks, sensors)
• Ropes, chains, counterweights
• Safety devices (governor, safeties, buffers)
4. Codes & Standards
• CSA B44 Safety Code for Elevators
• TSSA regulations
• Lockout/Tagout procedures
5. Installation & Maintenance
• Preventive maintenance
• Inspection procedures
• Lubrication and adjustments
6. Troubleshooting
• Fault diagnosis
• Systematic testing
• Electrical and mechanical failures
7. Safety
• Personal protective equipment (PPE)
• Fall protection
• Hazard identification
1.
, Page 2 of 104
During troubleshooting, an elevator motor fails to start even though power is present at the main
disconnect. What is the most likely next component to inspect?
A. Car lighting circuit
B. Motor starter or contactor control circuit
C. Counterweight frame
D. Door panel alignment
Answer: B
Rationale: If power reaches the disconnect but motor does not start, the issue is typically in the control
circuit such as a contactor or starter.
2.
An elevator car stops slightly above the floor level consistently during upward travel. What is the most
probable cause?
A. Excess lubrication
B. Incorrect leveling sensor or switch calibration
C. Broken counterweight
D. Door interlock failure
, Page 3 of 104
Answer: B
Rationale: Leveling accuracy depends on sensors; misalignment or calibration issues cause overtravel or
undertravel.
3.
A hydraulic elevator shows slow upward movement but normal downward speed. What is the likely
issue?
A. Faulty brake
B. Pump inefficiency or internal leakage
C. Counterweight imbalance
D. Door misalignment
Answer: B
Rationale: Upward motion depends on hydraulic pressure; inefficiency or leakage reduces lifting speed.
4.
During inspection, a wire rope shows broken wires concentrated in one section. What action is
required?
, Page 4 of 104
A. Continue use
B. Replace the rope immediately
C. Lubricate only
D. Reduce load
Answer: B
Rationale: Concentrated wire breaks indicate fatigue and require immediate removal from service.
5.
An elevator door fails to close completely, preventing the car from moving. What component is most
likely responsible?
A. Governor
B. Door interlock switch
C. Counterweight
D. Hoist motor
Answer: B
Rationale: The system prevents motion unless door interlocks confirm doors are fully closed.
