Photoelectric detector - Study guides, Class notes & Summaries

S/78 test Latest Version Already Graded A The purpose of fire alarms 1.Provide notification 2. Alert occupants 3. Sunmon aid 4. Control fire safety functions Ionization Detector Type of smoke detector that uses a small amount of radioactive material to make the air within a sensing chamber conduct electricity. Photoelectric Detectors Best type of detector for smokey fire by using a beam of light Light Obscurration Detector Uses a beam of light to detect. When the beam is interrupted by ...

Fire Officer I ACTUAL EXAM QUESTIONS AND ANSWERS LATEST (100% VERIFIED ANSWERS) | GRADED A+. What are the 5 types of building construction? - CORRECT ANSWER Type 1- fire resistive Type 2- non combustible Type 3- ordinary Type 4- heavy timber Type 5- wood frame -Type 1 and 2 are non combustible -Type 3, 4, and 5 are combustible Fire drills in schools - CORRECT ANSWER Done monthly, different times of day Rough drawing of building is called - CORRECT ANSWER Field sketch Microwave oven ...

Fire alarm 2024 Questions With 100% Correct Answers Where Public Mode audible appliances are installed they shall be ambient ? above average ambient sound level - Answer -15dBA Where audible appliances are installed in mechanical equipment rooms, the average ambient sound level is ? - Answer -85dBA An average ambient sound level greater than ? shall require the use of visible notification appliances - Answer -105 dBA Manual fire alarm boxes shall not be mounted less than 3-1/2' and ...

PASSAGE: Wavelength: 266 and 325 Power (mW): 1.5 and 2.2 Pulse duration (ms): 5 and 2 Which laser is suitable for the MALDI technique after its frequency is doubled? A. Laser A: wavelength 826 nm, power 1.2 mW B. Laser B: wavelength 714 nm, power 1.2 mW C. Laser C: wavelength 650 nm, power 1.5 mW D. Laser D: wavelength 532 nm, power 1.5 mW correct answers The answer to this question is D because the wavelength must be either 266 nm or 325 nm, and by doubling the frequency of the laser...

High energy radiation to destroy cancer cells None of the above The use of reproductive hormones can increase risk factors for breast cancer For immobilization only The dose to the radiosensitive cells of the breast The system is more efficient in converting input X-ray signals and/or the system has a high fill factor on the TFT array The detectors ability to respond to different exposure levels Will have a greater risk for breast cancer Me...

LMRT QUESTIONS AND ANSWERS GRADED A+ spatial resolution is improved when SID increases the adoption of a DICOM standard in the medical imaging industry was designed to allow various vendors to share digital data with out proprietary software constrains. Most AECS utilize ___ ion chambers in various combinations. Three Shape distortion is caused by ? A. as the ratio of SID and SOD B.using the tube angle and OID C.automatically in the computer post processing none of the above Filament mater...

CFPS-Practice Exam All Questions and Answers A+ Graded Which of the following provides regulations for protection in semiconductor manufacturing facilities? - CORRECT ANSWER-NFPA 318 Water mist systems are used to extinguish fires of which classification? - CORRECT ANSWER-Class A and B fires Which one of these is not one of the three operating principles used in gas-sensing fire detectors or multisensory detectors? - CORRECT ANSWER-Pneumatic principle Which of these are used to provi...

C- detection. - correct answer 5 (9001) - Smoke detection instruments are classified by their method of B- Cockpit and/or cabin. - correct answer 1 (8997) - In what area of an aircraft would you find a carbon monoxide detector? B- A lamp within the indicator illuminates automatically - correct answer 2 (8998) - What occurs when a visual smoke detector is activated? A- water, carbon dioxide, dry chemical, and halogenated hydrocarbons - correct answer 3 (8999) - The types of fire-...

Nuclear Medicine Instrumentation Exam Questions with 100% Correct Answers The amount of light generated by a sodium iodide crystal is directly related to the: A. photon energy absorbed in the crystal B. Diameter of the crystal C. Thickness of the crystal D. Age of the crystal - answerA. photon energy absorbed in the crystal A NaI (Tl) scintillation detector provides an output signal from the photo-multiplier tube that is proportional in amplitude to the amount of energy absorbed in the c...

Nuclear Medicine Instrumentation Exam Questions with 100% Correct Answers The amount of light generated by a sodium iodide crystal is directly related to the: A. photon energy absorbed in the crystal B. Diameter of the crystal C. Thickness of the crystal D. Age of the crystal - answerA. photon energy absorbed in the crystal A NaI (Tl) scintillation detector provides an output signal from the photo-multiplier tube that is proportional in amplitude to the amount of energy absorbed in the c...