FST 215 Chapter 4 Review Questions
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Micah Villa
Case Study Questions
You and your crew are dispatched to investigate a smoke detector that activated in an elevator lobby on the fourth floor of a recently
constructed high-rise building. Upon arrival, it is determined the alarm is accidental, so the system is reset. However, before you depart, you and the crew are stopped by building occupants who live on the 7th, 10th, and 14th floors. They are concerned that they
either barely heard or did not hear the alarm; the only way they found out something was going on was by looking out of their windows and seeing the fire trucks. In addition, they had to use the stairs to leave their floors because the elevators never came. How would you answer the following questions from the occupants?
1. Why was the alarm barely audible or not heard at all on the 7th, 10th, and 14th floors of the building?
A. That is just the way the fire alarm system works.
B. The fire alarm system needs its volume turned up.
C. The fire alarm system is broken and needs repairing.
D. It is typical for the alarm in a modern high-rise building to only sound on the floor of origin, the floor above origin, and the floor below origin.
2. Why would fire alarms—but no voice instructions—have been heard on every floor in the much older high-rise buildings where some of the occupants previously resided?
A. Unlike today’s modern high-rise buildings, most—if not all—high-rise buildings built before the mid-1980s only sounded a general alarm throughout the building; emergency voice alarm communication systems were not required when these buildings were constructed.
B. There must have been something wrong with the system, because only certain floors should have sounded an alarm.
C. There must have been something wrong with the system, because voice instructions should have been heard along with the
alarm.
D. That part of the fire alarm system must have needed its volume turned up.
3. Why did the elevators fail to come to the floor when the call button was pushed?
A. The elevators must be broken and need to be repaired.
B. Once an alarm activates, the elevators travel to the first floor or, if the alarm originates on the first floor, to an alternative floor so fire fighters can use them to investigate the alarm.
C. Once an alarm activates, the elevators shut down so nobody can use them.
D. Once the building alarm activates, the elevators stop at the closest floor and stay until reset by the fire department.
4. What should the occupants do if the alarms are not heard but the fire trucks can be seen and heard arriving at the building?
A. Occupants should not do anything. If they are in danger, the fire department will save them.
B. Occupants should find a manual station and pull it to sound the alarm. They should then go back into their unit and wait for instructions from the fire department.
C. Occupants should leave the building.
D. Unless occupants feel they are in danger, they should wait for instructions from the fire department. The fire department will provide information and instruction through the emergency voice alarm communications system.
B. Challenging Questions
1. What factors and conditions associated with the use and occupancy of a building determine the requirements to install manual fire
alarm and detection systems?
Occupancy, building height, manufacturing, number of occupants
2. What occupancies require installation of emergency voice alarm communication systems?
high rise buildings, amusement buildings, and large occupant loads
3. Where does the initial fire alarm signal sound in a modern high-rise building?
It sounds on the original floor, and the one above/ below the original floor
4. Explain the purpose and the features of a fire command center.
It’s a protected zone first responders can use as a central hub for fire operations
5. List and explain the differences between the four types of residential fire alarm systems.
single station, multi station, combination system, and household fire alarm system
Micah Villa
6. Explain the importance of interfacing a building fire alarm system with other building systems.
It will provide a variety of control/ management to the buildings systems.
7. List and explain the differences between the different NFPA classifications for fire alarm systems.
The different classifications of the NFPA Standard is Fire alarm systems, The supervising station fire alarm system, the public fire alarm reporting system, one way emergency communication systems, and two way emergency communications systems
8. Why would a certifying authority request the “Record of Completion” before the actual acceptance test of a fire alarm system?
The record of completion holds the contractor responsible
9. What problems are created when a fire alarm system experiences false alarms?
false alarms can give firefighters complacency and undermine the activated alarm when it could actually be something
10. Why is it so important to perform fire alarm system acceptance testing and periodic inspections and tests?
It can lead to unknown problems or failures to the system when its needed most.
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Provide a preventive measures for the incident case.
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QUESTION FIVE
Kindly answer correctly. Please sho all the necessary steps
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1) Forgetting the fact that it would be difficult to detect, if you turn on any electrical device in your car (such as air conditioner blower, headlights, or even the radio) then additional gasoline is burned by the engine. This statement is
a) always true.
b) true only if the car's engine is running while the electrical device is on.
c) true only if the car's engine is stopped while the electrical device is on.
d) never true. The energy for electrical devices in your automobile has nothing to do with the amount of gasoline your engine burns.
e) true in conventional cars, but not in hybrid electric cars.
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Question 20 of 20 <
A Water Balloon Battle. You are launching water balloons at a rival team using a large slingshot. The other team is set up on the
opposite side of a flat-topped building that is 30.0 ft tall and 50.0 ft wide. Your reconnaissance team has reported that the opposition is
set up 10.0 m from the wall of the building. Your balloon launcher is calibrated for launch speeds that can reach as high as 100 mph at
angles between 0 and 85.0° from the horizontal. Since a direct shot is not possible (the opposing team is on the opposite side of the
building), you plan to splash the other team by making a balloon explode on the ground near them.
If your launcher is located 55.0 m from the building (opposite side as the opposing team), what should your launch velocity be ((a)
magnitude and (b) direction) to land a balloon 5.0 meters beyond the opposing team with maximum impact (i.e. maximum vertical
speed)?
(a) Number i
(b) Number i
Units
Units
UNITS CHOICES: no units, degrees, s,…
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Rocket is presented with 20 Harbulary Batteries, 10 of which are real and 10 of which are fake. He attempts to detect, via visual inspection, which batteries are genuine. Of the 10 genuine ones, he correctly decides that all 10 are real. Of the fakes, he erroneously decides that 2 are real. Calculate the appropriate values to indicate Rocket’s sensitivity and criterion in detecting real batteries.
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Shannon’s Law
Arizona statutes were changed in 2000 concerning the use of firearms. The statute was named after a fourteen-year-old girl, Shannon Smith in Phoenix, Arizona who was killed by a stray bullet in June 1999. Shannon’s law was only a misdemeanor until the statutes changed in 2000. It is now a felony to discharge a firearm randomly into the air.
No arrests were ever made for the death of Shannon Smith. She was standing in the middle of the back yard talking on her cell phone when a stray bullet went through the top of her head and killed her.
Q: A number of injuries and deaths have been attributed to celebratory gunfire both in the U.S. and worldwide. In the state of Arizona, one such tragic incident led to the death of an eighth-grade student as described in the accompanying graphic.
if you model the round that struck Shannon as a lead sphere 9mm in diameter (a common handgun caliber) and accounting for buoyant force:
Calculate the probable velocity of the round that caused…
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The Weather Monitor. Your South American expedition splits into two groups: one that stays at home base, and yours that goes off to
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set up and calibrate the sensor, you will have to communicate with base camp to give them specific location information.
Unfortunately, the group's communication and navigation equipment has dwindled to walkie-talkies and a compass due to a river-raft
mishap, which means your group must not exceed the range of the walkie-talkies (3.0 miles). However, you do have a laser rangefinder
to help you measure distances as you navigate with the compass. After a few hours of hiking, you find the perfect plateau on which to
mount the sensor. You have carefully mapped your path from base camp around lakes and…
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Question 45 is based on the following picture.
Reprinted with permission from Popular Science magazine,
©2000, Times Mirror Magazines, Inc.
45. Stuart Wilkinson, the engineer of "Chew-
Chew" said, "we stole the idea of eating
food from the biological world, but we are
marrying that idea to useful robotic
capabilities." Which of the following
would not be an application of Stuart
Wilkinson's theory?
A. A leaf mulcher that feeds on foliage
B. a trash compactor that feeds on
garbage
dos C. a lawn mower that feeds on grass
bos
9D. a garden cultivator that feeds on soil
clippings
E. a recycling truck that feeds on
petroleum
conjo
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Guardrail is an example of protective equipment which prevent people from falling.
Select one:
True
False
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Question 2
You are a biomedical engineer working for a small orthopaedic firm that fabricates rectangular shaped fracture
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implanted into fractured limbs. Specifically, some plates have become permanently bent while patients are in rehab and doing partial
weight bearing activities.
Your boss asks you to review the technical report that was generated by the previous test engineer (whose job you now have!) and used to
verify the design. The brief report states the following... "Ti Fix-It plates were manufactured from Ti-6Al-4V (grade 5) and machined into
solid 150 mm long beams with a 4 mm thick and 15 mm wide cross section. Each Ti Fix-It plate was loaded in equilibrium in a 4-point bending
test (set-up configuration is provided in drawing below), with an applied load of 1000N. The maximum stress in this set-up was less than the
yield stress for the…
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In a manufacturing plant, a worker was operating a machine that was used for cutting metal
parts. The worker was attempting to adjust the machine’s settings when his hand became
caught in the machine’s moving parts.
Based on the aforementioned case:
(a) Describe the MOST appropriate guarding in isolating the machinery hazard.
( 4 )
(b)Identify the OSH legal requirement pertaining to machinery safety.
( 2 )
(c) Discuss how to ensure safety in machinery operation.
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https://www.sciencedirect.com/science/article/abs/pii/S0965997822001569
In the literature review, they should present the system installed and the main results obtained. In other words, the enhancement due to the installed system. They have to define the system used in this study. (the report talking about ventilation) pls in briefly
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Help!!! Please answer all Correctly!!! Please
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True or False
1. It is acceptable to use a hoist to lift something that weighs more than the rating on the hoist when the load is lifted carefully.
2. Typically, combustible material accidents occur at higher temperatures while flammable material accidents occur at room temperature.
3. Water reactive chemicals include calcium carbide, cyclooctene, metal hydrides, and metals like sodium and potassium.
4. When driving material lifting equipment, workers should maintain at least a 5-foot clearance from overhead power lines.
5. Workers should use at least 2 straps placed equally from the center when lifting a long I-beam.
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Multiple Choice
1. Which of the following chemicals is not considered a liver toxin?
A. Glacial acetic acid
B. Carbon Tetrachloride
C. Ethanol
D. Trichloroethylene
2. Which of the following is a safety practice intended to protect workers from a lightning strike?
A. Use a metal…
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QUESTION 1Kindly answer correctly. Please show the necessary steps. Thanks in advance.
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From the following identify the false statement.
O In electrical safety precaution, necessary steps should be taken to avoid overloading of electrical circuits.
In general safety precaution, the machine tool should be cleared with metal chips after the machining process.
OIn housekeeping safety precaution, the machine should be cleared with tools before starting the operation.
O In general safety precaution, the operator should be familiar with the emergency stop button on the machines.
Clear my choice
piner (8).pdf
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Newton's Law of cooling states that the rate at which heat is lost by a heated body is
proportional to the difference in temperature between the body and the surrounding
medium. Match the following statements/phrases with the corresponding item in the
drop down box. Choices in the box
1. In accordance with the stated law obove, we have the equation?
2. If a thermometer is taken outdoors where the temperoture is 5 deg C, from a
room in which the temperature is 20 deg C and the reading drops 10 deg C in one
minute, the working equation is?
3. In the obove problem, separoting the variables and integrating will result to?
4. In the obove problem, how long, in minutes, after its removal from the room will
the reading be 6 deg C?
5. In the obove problem, ofter 30 seconds, whot will be the thermometer reading?
5.2
dT(body temp)/dt = k(Temp of medium - 5)
dr(body temp)/dt = k(Temp of body - Temp of medium)
Temp of body = Cenkt +5
2.5
13.7
dr(body temp)/dt = k(Temp of medium - Temp of body)…
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to see what will happen to
3. Safety engineers use
people in a collision.
4. Decide whether each of the following statements is true (T) or false (F). Place your
answer in the blank space provided.
a. Restraining features operate continuously while you are driving.
b. Operational features hold vehicle occupants in place.
C. Brakes are an example of a structural feature.
d. Crumple zones are examples of operational features.
e. An air bag is an example of a restraining feature.
of the collision between the
5. Crumple zones increase the
occupants and the interior of the vehicle.
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What percentage of microorganisms survive following treatment if the population is reduced by a 7
log reduction?
%
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True or False
1. Inhalation is the most common way for a chemical to enter the body.
2. The first step of caring for a worker suffering from smoke inhalation is to provide the worker with 100% oxygen.
3. The employer is responsible for developing a written permit space program and ensuring its accessibility to relevant employees and contractors.
4. Even if a smoke inhalation victim is not negatively affected in the short term, symptoms can progress at a later date and lead to illness or even death.
5. According to OSHA, the permissible noise level for an eight hour period is 90 decibels.
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Multiple Choice
6. Good ventilation is a key component in controlling workers’ exposure to:
A. Airborne pathogens
B. Flammable Vapors
C. Chemicals
D. All answers are correct
7. Which of the following situations would not require a permit?
A. Walls join inward
B. Contains a hazardous atmosphere
C. Limited…
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Four months into a six month deployment, you are a solo pilot returning to home base after an uneventful overwatch mission to a non-disclosed desert
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approach plate reveals you will fly a prolonged DME arc taking you out over the unlit desert away from the dimly lit base.
While flying the above instrument approach, you take another look at the approach plate. When you look up again the airfield lights are visible through the
upper portion of your canopy. You did not sense any change in your aircraft attitude. Which of the following best describes what happened while you looked
at the approach plate?
OA. The black hole effect has amplified the normal reflection of the airfield lights…
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Which of the following statements is incorrect?
a. As a result, molecules will flow in one of six potential ways. As a result, it is reasonable to predict that one-sixth of it will move in the positive direction.b. Flux is the rate at which something is transported per unit area of space.c. Flux can occur even if there is no driving forced.Initially, the flow for transport processes is nonlinear, but over a period of time, the flux becomes linear.
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submit at least 10 hazard symbols and its description used in a workplace. identify the workplace where that symbol is being used.
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In Part B, it was shown that the tension in a cable is constant around a frictionless pulley. The reason why the equations of equilibrium could be used here is because the
values of 0 and o are not arbitrary. In fact, the geometry of the system is based on the equations of equilibrium and a relationship between 0 and o can be determined
using them.
Part D - Finding the relationship between \theta and \phi
Figure
Find the relationship between angles e and o using the equations of equilibrium and solve for 0. Suppose that the angles are expressed in radians.
Express your equation for 0 in terms of ø. Express your answer in radians.
• View Available Hint(s)
Vol AEo t vec
В
A
C
Submit
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