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TFM12
TFM12 TEST EXAMINATION QUESTIONS AND
VERIFIED ANSWERS| GRADE A| 100%
CORRECT (2024/ 2025)
What is 'Photoelectric Light-Scattering Smoke Detection'? - ANS ✓A detector
that uses a light source and a photosensitive sensor, arranged so that light will
only fall on the sensor when smoke particles are present. The particles reflect
and retract light towards the sensor, tripping the alarm.
What is important about the way trouble signals sound? - ANS ✓They must
be distinctive from alarm signals
Fire/ Supervisory signals shall be _____________ in sound from other signals
and shall not be used for any other purpose. - ANS ✓Distinctive
What code shall all wiring, cable and equipment be in accordance with? -
ANS ✓NFPA 70
All systems shall test free of _______________, except for applications in which
___________are approved. - ANS ✓Grounds
TFM12 Test
, 2
TFM12
So long as single open, ground or short circuit conditions do not affect the
operation of equipment, what is not needed? - ANS ✓Monitoring for integrity.
Such conditions must not prevent alarm, trouble or supervisory signals being
sent.
If speakers are used to generate audible fire signals, what rule must apply?
- ANS ✓Any failure should result in a trouble signal.
In a one or two family dwelling, where must smoke detectors be located? -
ANS ✓All sleeping rooms, outside of each sleeping area and on all levels of the
dwelling, (including basements).
Where must spot-type heat and smoke sensors be located on walls? - ANS
✓Between 4in and 12in from the ceiling
When more than one detector is used on a ceiling, what spacing
measurement shall be used? - ANS ✓All points shall have a detector equal to
0.7 times the listed spacing.
Can a detector be installed during construction? - ANS ✓Only if they are
replaced upon completion of construction
TFM12 Test
TFM12
TFM12 TEST EXAMINATION QUESTIONS AND
VERIFIED ANSWERS| GRADE A| 100%
CORRECT (2024/ 2025)
What is 'Photoelectric Light-Scattering Smoke Detection'? - ANS ✓A detector
that uses a light source and a photosensitive sensor, arranged so that light will
only fall on the sensor when smoke particles are present. The particles reflect
and retract light towards the sensor, tripping the alarm.
What is important about the way trouble signals sound? - ANS ✓They must
be distinctive from alarm signals
Fire/ Supervisory signals shall be _____________ in sound from other signals
and shall not be used for any other purpose. - ANS ✓Distinctive
What code shall all wiring, cable and equipment be in accordance with? -
ANS ✓NFPA 70
All systems shall test free of _______________, except for applications in which
___________are approved. - ANS ✓Grounds
TFM12 Test
, 2
TFM12
So long as single open, ground or short circuit conditions do not affect the
operation of equipment, what is not needed? - ANS ✓Monitoring for integrity.
Such conditions must not prevent alarm, trouble or supervisory signals being
sent.
If speakers are used to generate audible fire signals, what rule must apply?
- ANS ✓Any failure should result in a trouble signal.
In a one or two family dwelling, where must smoke detectors be located? -
ANS ✓All sleeping rooms, outside of each sleeping area and on all levels of the
dwelling, (including basements).
Where must spot-type heat and smoke sensors be located on walls? - ANS
✓Between 4in and 12in from the ceiling
When more than one detector is used on a ceiling, what spacing
measurement shall be used? - ANS ✓All points shall have a detector equal to
0.7 times the listed spacing.
Can a detector be installed during construction? - ANS ✓Only if they are
replaced upon completion of construction
TFM12 Test
