ALBERTA HEAVY EQUIPMENT
TECHNICIAN FIRST PERIOD AIT FINAL
EXAM QUESTIONS WITH CORRECT
ANSWERS AND EXPLANATIONS
1. When identifying an SAE Grade 8 bolt, how many radial lines will be found on the head?
A. 3
B. 5
C. 8
D. 6
Answer: D
Conceptual Explanation: An SAE Grade 8 bolt is identified by 6 radial lines on its head.
The grade is determined by adding 2 to the number of lines.
2. Which type of fire extinguisher is specifically designed for use on energized electrical
equipment?
A. Class A
B. Class C
C. Class B
D. Class D
,Answer: B
Conceptual Explanation: Class C extinguishers are used for electrical fires because the
extinguishing agent is non-conductive.
3. What is the correct formula for calculating compression ratio?
A. (Swept Volume + Clearance Volume) / Clearance Volume
B. Swept Volume / Clearance Volume
C. (Swept Volume - Clearance Volume) / Swept Volume
D. Total Volume / Swept Volume
Answer: A
Conceptual Explanation: Compression ratio is the ratio of the maximum volume (Swept +
Clearance) to the minimum volume (Clearance) in the cylinder.
4. Which tool is most appropriate for measuring the crankshaft end play?
A. Feeler Gauge or Dial Indicator
B. Inside Micrometer
C. Vernier Caliper
D. Telescoping Gauge
Answer: A
, Conceptual Explanation: Crankshaft end play is the axial movement of the crankshaft,
typically measured using a dial indicator or feeler gauges at the thrust bearing.
5. In a series circuit with two identical resistors and a 24V source, what is the voltage drop
across each resistor?
A. 6V
B. 12V
C. 24V
D. 48V
Answer: B
Conceptual Explanation: In a series circuit with equal resistances, the source voltage is
divided equally among the loads.
6. According to Pascal’s Law, if pressure is applied to a confined fluid, how is it transmitted?
A. Equally in all directions
B. Only in the direction of the force
C. It decreases as the distance from the source increases
D. It increases with the volume of the container
Answer: A
Conceptual Explanation: Pascal’s Law states that pressure applied to a confined fluid is
transmitted undiminished in all directions throughout the fluid.
TECHNICIAN FIRST PERIOD AIT FINAL
EXAM QUESTIONS WITH CORRECT
ANSWERS AND EXPLANATIONS
1. When identifying an SAE Grade 8 bolt, how many radial lines will be found on the head?
A. 3
B. 5
C. 8
D. 6
Answer: D
Conceptual Explanation: An SAE Grade 8 bolt is identified by 6 radial lines on its head.
The grade is determined by adding 2 to the number of lines.
2. Which type of fire extinguisher is specifically designed for use on energized electrical
equipment?
A. Class A
B. Class C
C. Class B
D. Class D
,Answer: B
Conceptual Explanation: Class C extinguishers are used for electrical fires because the
extinguishing agent is non-conductive.
3. What is the correct formula for calculating compression ratio?
A. (Swept Volume + Clearance Volume) / Clearance Volume
B. Swept Volume / Clearance Volume
C. (Swept Volume - Clearance Volume) / Swept Volume
D. Total Volume / Swept Volume
Answer: A
Conceptual Explanation: Compression ratio is the ratio of the maximum volume (Swept +
Clearance) to the minimum volume (Clearance) in the cylinder.
4. Which tool is most appropriate for measuring the crankshaft end play?
A. Feeler Gauge or Dial Indicator
B. Inside Micrometer
C. Vernier Caliper
D. Telescoping Gauge
Answer: A
, Conceptual Explanation: Crankshaft end play is the axial movement of the crankshaft,
typically measured using a dial indicator or feeler gauges at the thrust bearing.
5. In a series circuit with two identical resistors and a 24V source, what is the voltage drop
across each resistor?
A. 6V
B. 12V
C. 24V
D. 48V
Answer: B
Conceptual Explanation: In a series circuit with equal resistances, the source voltage is
divided equally among the loads.
6. According to Pascal’s Law, if pressure is applied to a confined fluid, how is it transmitted?
A. Equally in all directions
B. Only in the direction of the force
C. It decreases as the distance from the source increases
D. It increases with the volume of the container
Answer: A
Conceptual Explanation: Pascal’s Law states that pressure applied to a confined fluid is
transmitted undiminished in all directions throughout the fluid.
