AIT Trade Theory 2 — Questions and Answers
Question 1: What is the primary purpose of a torque wrench in trade applications?
- To loosen rusted fasteners
- To apply a precise amount of rotational force to a fastener (Correct answer)
- To measure the diameter of bolts
- To cut threaded rods to length
Correct answer: To apply a precise amount of rotational force to a fastener
A torque wrench is designed to apply a specific, measured amount of rotational force (torque) to fasteners to ensure proper tightening without over- or under-tightening.
Question 2: In the context of apprenticeship training, what does OJT stand for?
- On-the-Job Training (Correct answer)
- Official Job Testing
- Occupational Job Transfer
- Organized Joint Training
Correct answer: On-the-Job Training
OJT stands for On-the-Job Training, which is the practical, hands-on component of apprenticeship programs where apprentices learn skills in the actual work environment.
Question 3: Which type of circuit has only one path for current to flow through all components?
- Parallel circuit
- Series circuit (Correct answer)
- Combination circuit
- Open circuit
Correct answer: Series circuit
In a series circuit, all components are connected end-to-end so there is only one path for electrical current to flow through each component sequentially.
Question 4: What is the purpose of using Personal Protective Equipment (PPE) on a job site?
- To identify trade workers from management
- To comply with uniform regulations only
- To reduce the risk of injury from workplace hazards (Correct answer)
- To improve worker productivity
Correct answer: To reduce the risk of injury from workplace hazards
PPE is worn to minimize exposure to hazards that could cause serious workplace injuries and illnesses, protecting workers from physical, chemical, and biological hazards.
Question 5: When reading a blueprint, what does a hidden line (dashed line) typically represent?
- A centerline of a component
- A feature that is not visible from the current view (Correct answer)
- A cutting plane line
- A dimension line
Correct answer: A feature that is not visible from the current view
Hidden lines, drawn as dashed or broken lines, represent edges or features of an object that exist but cannot be seen from the current viewing angle.
Question 6: What is the correct procedure when using a grinder with a damaged or cracked grinding wheel?
- Reduce the speed and continue using it
- Apply tape around the wheel to hold it together
- Replace the wheel immediately before operating (Correct answer)
- Use the wheel only for light grinding tasks
Correct answer: Replace the wheel immediately before operating
A damaged or cracked grinding wheel must be replaced immediately because it can shatter at high speeds, creating a serious risk of injury to the operator and bystanders.
Question 7: What does Ohm's Law state about the relationship between voltage, current, and resistance?
- Voltage equals current divided by resistance
- Current equals voltage multiplied by resistance
- Voltage equals current multiplied by resistance (Correct answer)
- Resistance equals voltage multiplied by current
Correct answer: Voltage equals current multiplied by resistance
Ohm's Law states that Voltage (V) = Current (I) × Resistance (R), meaning voltage is directly proportional to both current and resistance in a circuit.
AIT Trade Theory 2
What is the primary purpose of a torque wrench in trade applications?