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A comprehensive set of questions and verified solutions for the fctc written exam 2025. It covers various topics, including classes of levers, mechanical advantage, fluid dynamics, gear trains, belt and pulley systems, and technical information recall. The document aims to help students prepare for the exam by providing a structured approach to understanding key concepts and solving problems.
Typology: Exams
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Classes of Levers - Correct Answer-Class 1, Class 2, Class 3 Class 1 Levers - Correct Answer-Fulcrum is in the middle, with the effort (input) force on one side of the fulcrum and resistance (output) on the other side .Mechanical Advantage greater or less than 1 Ex: Seesaw, Crowbar, Pair of Scissors. Class 2 Levers - Correct Answer-Resistance is in the middle, the effort is applied on one side of the resistance and the fulcrum on the other side .Mechanical Advantage is always greater than 1 Ex: Wheelbarrow, nutcracker, bottle opener, or the brake pedal of a car. Class 3 Levers - Correct Answer-Effort in the middle, the resistance is on one side of the effort and the fulcrum is located on the other side. Mechanical Advantage is always less than 1
Ex: Pair of tweezers, human mandible Lever Definitions - Correct Answer-Lever machine consisting of a beam or rigid rod pivoted at a fixed hinged, or fulcrum. Input Force = Effort Output Force = Load or Resistance What does "fre, 123" mean? - Correct Answer-Fulcrum is in the middle for Class 1 LeversResistance (output) in middle for Class 2Effort (input) in the middle for Class 3 Formula for Determining the head pressure difference between an intake and output - Correct Answer-1 vertical foot = 0.433 psi 1 psi = 2.31 vertical feet Overall Test Overview: - Correct Answer-1) 30-minute period to read 2 essays- 2 - hour time limit begins to answer (100 questions).
Belt and Pulley Systems - Correct Answer-Two or more pulleys in common to a belt. If the pulleys are of differing pitch diameters, a mechanical advantage is realized. Doesn't depend on ratio of teeth as with gears and sprockets, only pitch diameter. What is a pulley (also called a "sheave" or "drum") - Correct Answer-A pulley is a wheel on an axle or shaft that is designed to support movement and change in direction of a belt or cable along its circumference. For a Rope and Pulley System that is a Block and Tackle, is characterized by: - Correct Answer-* If the rope does not dissipate or store energy, then its mechanical advantage is the number of parts of the rope that act on the load.- if the anchor knot is at the load ("A", "D", and "E") then the mechanical advantage will be odd. (1:1, 3:1, 5:1, etc.)- if the anchor knot is at the anchor ("B", "C") then the mechanical advantage will be even. (2:1, 4:1, 6:1, etc.)- to calculate haul distance, multiply the distance need to go by the mechanical advantage. (3:1 ratio, 20 ft to haul, multiply 3 x 20 ft to get a total of 60ft) How much water can be held in engine 17 water tank - Correct Answer-105 feet Sq
How many gallons with a tank of 12 ft diameter hold if it is 5 feet deep - Correct Answer- 4320 Engine carries lots of hose. 4" was removed - Correct Answer-30% left How many acres were burned - Correct Answer-6.88 acres How many cubic feet of water can a captain expect the tank to hold - Correct Answer- 1385 What is the total percentage of the body burned - Correct Answer-22.. What is the minimum length of ladder to reach the roof of a 3 story house - Correct Answer-40ft Total chain that crew cuts - Correct Answer-6 chains each
Engine carries 1,100 ft of 2 ½ inch, 900ft of 4 inch and 1000ft of 4 ½ ;if the 4 inch was removed, what percentage was removed from the total? - Correct Answer- 30% For a fire on the fourth floor, you need 100psi at the nozzle, for each floor above the first floor you lose 5 psi, for every 100ft of hose you lose 15 psi. There are 400 ft of hose used to get to the fire, what is the total pressure needed at the engine?
Entire arm = 15% Determine what percentage total is burned? - Correct Answer-22.5% County responded to 18,462 calls. 44 percent of the calls were vehicle accidents. What is the total number of vehicle accidents? - Correct Answer-8123. You and your 3 firefighters....1 week and 4 days how many hours has your crew been there? - Correct Answer-264 hours What is the minimum length ladder needed to reach the roof of a 3 story house? Building story average 12ft floor to floor and the distance from the window sill is - Correct Answer-40ft Total chains that crew cuts? - Correct Answer-6 chains each Average money for dinner? - Correct Answer-14. How many 2 pints will 5 gallon drum? - Correct Answer-20 pints
If engine 1 is responding to a call 4.5miles away and has an averagespeed of 50 mph and engine 2 isresponding to the same call and hasto go 6 miles with and averagespeed of 55 mph. Who will be onscene first and by how much time? - Correct Answer-Engine 1 by 1 minute and 9 seconds You and your crew are buying dinner, there are 7 of you, each person chips in $9. Diner costs 64.44 - Correct Answer-Over $1. How much of the entire body was butter? - Correct Answer-27. What two vehicles would fit in the app bay if they were stacked on each other? - Correct Answer-Squad 23ft and battalion 9 15ft Boys and girls get 60 votes for class president, a 3:2 ratio. How votes do boys get? Boys 36 / girls 24 - Correct Answer-24 votes 3 different sizes of horse. You are given the total amount of hose, total, but you have to determine how much that was used? - Correct Answer-700 ft 66 feet in a chain, on average a firefighter can cut 10 chains in an hour. How many yards can he cut in an hour? - Correct Answer-220yards
square foot of a mall - Correct Answer- 18000 Tank 1. 830 gallons x 2ft depth = 1660 Tank 2. 670 gallons c 2ft depth = 1340 - Correct Answer- 330 You have an 8 gallon tank you have to fill. Each gallon is 2.5 gallons. How many is required to fill the 8 gallon - Correct Answer-3. The one about the engine pump. The tank holds 500 gallons. How much time do you have left in 90 seconds if you are flowing at 125gpms - Correct Answer- 150 seconds Engine 1 has a tank that hold 40mpg and travel 15 miles. While engine 2 tank hold 35 mpg and travels 17 miles - Correct Answer-Engine 2 will run out of gas first and go 5 miles less then engine 1 Class K Fire Extinguisher needs to be 30 feet from the farthest cooking device and near the next door, stove is 20 feet from the door. Pizza oven is 40 feet from the door and the fryer is 55 feet from the door, where does the fire extinguisher need to be placed. - Correct Answer-25 ft
How many square feet are in a circle with a radius of 5 feet? - Correct Answer-
What is the total volume of a cube that is 7' tall, 3' wide and 5' long? - Correct Answer-105 cubic feet What is the total volume of a cylinder that is 7' high with a 3' radius? - Correct Answer-197.82 cubic feet There are numerous components to an SCBA including: - Correct Answer-All of the above The PASS device is a/an______________ warning system designed to let the firefighter know when they are low on air. - Correct Answer-Audible The PASS device cannot be turned off and can only be disarmed by turning off the SCBA unit or via: - Correct Answer-Refill of the tank above 500 psi
Unless equipped with a protective breathing apparatus, it should be a fundamental rule in firefighting that no one be permitted to enter any potentially toxic atmosphere, including a/an: - Correct Answer-Hazardous materials emergency The______________ are more vulnerable to injury than any other body part. - Correct Answer-Lungs and respiratory tract There are__________ common hazardous atmospheres associated with fires or other emergencies. - Correct Answer- 4 The hazardous atmospheres associated with fires or other emergencies include the following: - Correct Answer-All of the above When oxygen concentrations are below percent, the human body responds by increasing its respiratory rate. - Correct Answer- 18 _______________is the number one cause of fire-related deaths. - Correct Answer-Carbon monoxide
30 kids Chainsaw TR Composition roof 2am 4x6 hole 1 Hall Runner 2 salvage covers Fire Investigator on scene Electrical fire - Correct Answer- Engine 22 First Order: Gear up & Standby 2175 Ladero Street Tripped over dog leash Stokes basket 4 men hauling system 30 yards Patient name Kevin 22 held c-spine Mid-shaft Femur Fracture Engine 4 Medical Group - Correct Answer-
During water rescue, what is first priority after arriving on scene? - Correct Answer-Identify witness party Swift water rescue procedure - Correct Answer-talk, reach, throw, row, go, helo Primary (hasty) search Crew calls "contact" and distance callouts Swimmer drags fins in water to maintain headway climb Media and citizens must stay 20 feet away from water edge Set fire extinguisher 25 feet from door 24 foot ladder minimum - Correct Answer-