APT APT Mechanical Aptitude 2 — Questions and Answers
Question 1: A soldier uses a ramp to load a 600-pound crate into a truck. If the ramp is 12 feet long and the truck bed is 3 feet high, what is the mechanical advantage?
- 2
- 3
- 4 (Correct answer)
- 6
Correct answer: 4
Mechanical advantage of a ramp = length ÷ height = 12 ÷ 3 = 4.
Question 2: What does a thermostat primarily control?
- Electrical current
- Water pressure
- Temperature (Correct answer)
- Fuel flow
Correct answer: Temperature
A thermostat is a device that senses and regulates temperature in heating or cooling systems.
Question 3: If you tighten a bolt clockwise, in which direction do you turn to loosen it?
- Clockwise
- Counterclockwise (Correct answer)
- The direction does not matter
- Downward
Correct answer: Counterclockwise
Most standard fasteners follow the 'righty-tighty, lefty-loosey' rule — counterclockwise loosens them.
Question 4: What type of current does a battery produce?
- Alternating current (AC)
- Direct current (DC) (Correct answer)
- Pulsed current
- Static current
Correct answer: Direct current (DC)
Batteries produce direct current (DC), which flows in one constant direction.
Question 5: A vehicle engine has low oil pressure. What is the MOST likely cause?
- Excess coolant
- Low oil level or a leak (Correct answer)
- A dirty air filter
- Worn brake pads
Correct answer: Low oil level or a leak
Low oil pressure is most commonly caused by insufficient oil level or a leak in the lubrication system.
Question 6: What is the main function of a circuit breaker?
- Increase voltage in a circuit
- Store electrical energy
- Protect circuits from overload by interrupting current flow (Correct answer)
- Convert AC to DC
Correct answer: Protect circuits from overload by interrupting current flow
A circuit breaker automatically interrupts electrical flow when it detects an overload, protecting equipment and wiring.
APT APT Mechanical Aptitude 2
A soldier uses a ramp to load a 600-pound crate into a truck.
If the ramp is 12 feet long and the truck bed is 3 feet high, what is the mechanical advantage?