Commercial Intrusion Alarm SySTEMs
(179).webp "Commercial Intrusion Alarm Systems - Quiz")
Questions and Answers
- 1.
UL lists connectors and switches in which of its standards?
- A.
A. 631
- B.
B. 681
- C.
C. 634
- D.
D. 3001
Correct Answer
C. C. 634Explanation
UL (Underwriters Laboratories) lists connectors and switches in its standard 634.Rate this question:
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- 2.
2. An inaccessible opening is one that is more than ______ feet above the ground or the roof of an adjoining building.
- A.
A. 3
- B.
B. 14
- C.
C. 18
- D.
D. 20
- E.
E. None of the above
Correct Answer
C. C. 18Explanation
C — UL 681 section 3.23: An opening is inaccessible if it is more than 18 feet above either the ground or the roof of an adjoining building.Rate this question:
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- 3.
3. Pick the dimensions below that UL 681 considers to be a manhole-size opening?
- A.
A. 48 x 2
- B.
B. 32 x 3
- C.
C. 24 x 4
- D.
D. 16 x 7
- E.
E. Any of the above
Correct Answer
D. D. 16 x 7Explanation
D — A manhole opening must have a clear cross-section area of 96 square inches or more and have the smallest dimension exceeding 6 inches.Rate this question:
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- 4.
4. Wiring that is run from a control to a safe/vault complete that is surface mounted shall be ______ .
- A.
A. in EMT
- B.
B. in rigid conduit
- C.
C. protected from damage
- D.
D. Any of the above
Correct Answer
D. D. Any of the aboveExplanation
The correct answer is d. Any of the above. This means that wiring that is run from a control to a safe/vault complete that is surface mounted can be in EMT, in rigid conduit, or protected from damage. The choice of wiring method will depend on the specific requirements and regulations of the installation.Rate this question:
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- 5.
5. When a device includes a tamper switch it shall be wired to its own protection circuit.
- A.
A. True
- B.
B. False
Correct Answer
A. A. TrueExplanation
When a device includes a tamper switch, it is necessary to wire it to its own protection circuit. This is because the tamper switch is designed to detect any unauthorized access or tampering with the device. By wiring it to its own protection circuit, any tampering or unauthorized access will trigger the circuit and alert the appropriate authorities or system administrators. This helps ensure the security and integrity of the device and its data.Rate this question:
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- 6.
6. ______ wall construction does not require protection for a UL listed system at extent #2.
- A.
A. Gypsum block
- B.
B. Brick
- C.
C. Cinder block
- D.
D. Concrete
- E.
E. All of the above
Correct Answer
D. D. ConcreteExplanation
D — UL 681, Section 4.1.3.1, “Accessible ceiling, floors, and walls constructed of monolithic concrete or pre-cast concrete building panels do not require protection.”Rate this question:
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- 7.
7. Movable openings that are considered non-accessible need not be protected for an extent #2.
- A.
A. True
- B.
B. False
Correct Answer
A. A. TrueExplanation
This statement is true because movable openings that are considered non-accessible do not need to be protected for an extent #2. This means that there is no requirement to provide any form of protection or security measures for these openings.Rate this question:
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- 8.
8. Walls considered to be accessible require protection for an extent #3.
- A.
A. True
- B.
B. False
Correct Answer
A. A. TrueExplanation
A — Protection of walls, floors and ceilings is only required for extent #1 and extent #2.Rate this question:
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- 9.
9. Central station burglar alarm units are listed in the UL standard # ______ .
- A.
A. 631
- B.
B. 1631
- C.
C. 610
- D.
D. 1610
Correct Answer
D. D. 1610Explanation
Central station burglar alarm units are listed in the UL standard # 1610.Rate this question:
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- 10.
10. Photoelectric units shall be mounted so that the beam is not less than ______ inches nor more than ______ inches from the floor.
- A.
A. 6/12
- B.
B. 12/24
- C.
C. 18/36
- D.
D. 24/48
Correct Answer
C. C. 18/36Explanation
Photoelectric units need to be mounted at a specific height from the floor to ensure proper detection and functionality. The correct answer of 18/36 inches means that the beam should be mounted at a minimum height of 18 inches and a maximum height of 36 inches from the floor. This range allows for flexibility in installation while still maintaining the effectiveness of the photoelectric unit.Rate this question:
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- 11.
11. Which UL standard governs the installation and classification of burglar and holdup alarm systems?
- A.
A. 365
- B.
B. 634
- C.
C. 639
- D.
D. 681
Correct Answer
D. D. 681Explanation
UL standard 681 governs the installation and classification of burglar and holdup alarm systems. This standard provides guidelines for the installation, testing, and maintenance of these systems to ensure their effectiveness and reliability. It covers various aspects such as system components, wiring, power supplies, and monitoring requirements. Compliance with this standard helps ensure that burglar and holdup alarm systems are installed and operated safely and efficiently.Rate this question:
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- 12.
12. A vault complete system must activate an alarm if an opening of 90 square inches is made in the vault or vault door.
- A.
A. True
- B.
B. False
Correct Answer
B. B. FalseExplanation
B — Refer to question 3.Rate this question:
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- 13.
13. In order to provide complete protection of a vault door a motion detection device can be used.
- A.
A. True
- B.
B. False
Correct Answer
B. B. FalseExplanation
B — An alarm must be generated if a manhole-sized opening is made in the door; therefore, a motion detector is not acceptable.Rate this question:
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- 14.
14. To protect a safe, ordinary-use alarm contacts may not be used.
- A.
A. True
- B.
B. False
Correct Answer
A. A. TrueExplanation
A — Ordinary use contacts always may be used on a complete safe. They must be mounted on the inside of the safe or on the outside if used in conjunction with a capacitance alarm unit.Rate this question:
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- 15.
15. A splice shall be provided with insulation ______ .
- A.
A. that consists of at least two layers of electrical tape
- B.
B. equivalent to that of the wires involved
- C.
C. stripped from a larger wire and placed over the splice
- D.
D. All of the above
- E.
E. None of the above
Correct Answer
B. B. equivalent to that of the wires involvedExplanation
B — UL 645, Section 8.7.Rate this question:
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Current Version
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Apr 12, 2024Quiz Edited by
ProProfs Editorial Team -
Dec 05, 2016Quiz Created by
SDMMagazine
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