Security Alarm Installer Quiz

The correct answer is "all conductors must be either in conduit or rated for installation in plenum ceilings." This means that when running wire in a return-air plenum ceiling, the conductors must be either enclosed in conduit or specifically designed and rated for installation in plenum ceilings. This is to ensure safety and compliance with regulations, as plenum ceilings are spaces that can potentially contain air circulation systems and can pose fire hazards if not properly wired.

It is not permissible to run access control wiring in an elevator shaft.

The current flowing through a resistor can be calculated using Ohm's Law, which states that current (I) is equal to voltage (V) divided by resistance (R). In this case, the voltage across the resistor is 5 volts and the resistance is 1000 ohms. By substituting these values into the formula, we can calculate the current as 5.0 mA (milliamperes).

A dielectric is the insulating material used in a capacitor. It is a non-conductive substance that is placed between the two conductive plates of a capacitor to separate them and prevent electrical current from flowing directly between them. The dielectric material increases the capacitance of the capacitor by storing electrical energy in its electric field. Fiberglass, resistor, and semi-conductor are not typically used as dielectric materials in capacitors.

When the N/C alarm circuit is disconnected from the control and there is an open device on the loop, it means that the circuit is not complete and there is a break in the circuit. In an open circuit, there is no continuous path for the electric current to flow, resulting in infinite resistance. Therefore, the total circuit resistance in this scenario would be an open circuit.

The correct answer is "yes, provided the cable is protected from physical damage up to 1.5 m from the floor." This means that it is permissible to run exposed non-metallic sheathed cable on a vertical wall as long as it is protected from physical damage within 1.5 meters from the floor. This protection can be in the form of a heavy rubber coating or any other suitable means to prevent damage to the cable.

ULC stands for Underwriters Laboratories of Canada. It is an organization that provides standards for alarm devices and installation in Canada. They are responsible for testing and certifying products to ensure their safety and performance. ULC standards are widely recognized and trusted in the industry, making them an important organization for maintaining quality and reliability in alarm systems in Canada.

The correct answer is "insulation thickness determines the current capacity of a wire." This statement is not true because insulation thickness does not determine the current capacity of a wire. The current capacity of a wire is determined by its cross-sectional area and the material it is made of. Thicker insulation may provide better protection against external factors, but it does not directly affect the wire's ability to carry current.

In a parallel circuit, the voltage across each branch is always equal to the source voltage. This is because in a parallel circuit, the voltage across each branch is the same as the voltage across the source. This is because the voltage is divided equally among the branches, and the total voltage across the branches adds up to the source voltage. Therefore, the voltage across each branch in a parallel circuit is always equal to the source voltage.

A single diode cannot change the direction of current flow. A diode is a semiconductor device that allows current to flow in one direction and blocks it in the opposite direction. It acts as a one-way valve for current. Therefore, a diode can only allow current to flow in one direction, but it cannot change the direction of current flow. Hence, the statement is false.

A passive infrared detector detects changes in ambient energy. This means that it can sense variations in the surrounding energy levels, such as changes in temperature, heat, or infrared radiation. This type of detector is commonly used in security systems to detect movement or presence of living beings in a protected area. By detecting changes in ambient energy, the detector can trigger an alarm or other response to alert the user of potential intruders or activity in the area.

The correct answer is "required by any employee of a security company." This means that all employees working for a security company are mandated to obtain a security license from the ministry of the solicitor general's programs division. This license is necessary for any individual employed in the security industry, regardless of their specific role or level of experience.

The statement is false because photoelectric beams should be installed at a distance from the fence being protected to ensure maximum protection. Placing the beams too close to the fence may result in false alarms or the beams being easily bypassed by intruders. Therefore, it is important to have an adequate distance between the beams and the fence for effective security.

The correct answer is range and sensitivity. The installer can fine tune the microwave portion of a dual detector by adjusting the range, which determines the distance at which the detector can detect motion, and sensitivity, which determines how sensitive the detector is to small movements. By adjusting these two controls, the installer can optimize the performance of the dual detector and ensure accurate motion detection.

When checking the polarity of a phone line, the positive test lead of the meter should be connected to the "tip" of the phone line. The tip is the positive terminal of the phone line, and connecting the positive test lead to it allows for accurate measurement of the voltage or polarity.

A "Pet Proof" detector cannot ignore any number of real targets in its field of view, regardless of their total combined weight.

A "Dead Zone" in a PIR motion detectors field of view refers to an area between PIR motion detectors "beams". This means that there is a gap or space where the detectors' coverage does not overlap, resulting in a zone that is not effectively monitored by the motion detectors. This can lead to potential blind spots where motion may go undetected, reducing the overall effectiveness of the system in detecting movement.

When two identical voltmeters are placed in series across a 12V DC supply, the total voltage across both meters is divided equally. Therefore, each meter will read half of the total voltage, which is 6V DC.

When cells are connected in parallel, their voltages remain the same and their capacities add up. In this case, three 1.5 V cells are connected in parallel, which means the voltage remains at 1.5 volts. Therefore, the correct answer is a 1.5 volt battery.

The correct answer is 4 because it is stated in the options. The question asks about the number of levels of communication listed in ULC, and the options provided are 1-5, 1-4, 4, and 3. Out of these options, only the option "4" matches the question and indicates that there are four levels of communication listed in ULC.

A security business license (sales only) can be issued to a company without anyone in the company having a TQ because the license is specifically for sales and does not involve any alarm installation work. Therefore, it is not necessary for anyone in the company to have a TQ, which is typically required for individuals involved in alarm installation work.

The total current draw of the 8 motion detectors can be calculated by multiplying the current consumed by each device (26 mA) by the number of devices (8). This gives us a total current draw of 208 mA. To convert this to amps, we divide by 1000, resulting in 0.208 A. Therefore, the correct answer is 0.208 A.

The given statement is true because the data stored on the magnetic stripe of an access card can indeed be copied by anyone with a card printer. Magnetic stripe cards use a simple encoding system that can be easily replicated, making them vulnerable to unauthorized duplication. This is why additional security measures, such as encryption or the use of more advanced technologies like smart cards, are often implemented to prevent unauthorized access or fraud.

The correct answer is any combination of bends to a total of 360 degrees. This means that you can have multiple bends in a run of conduit as long as the total angle of all the bends combined does not exceed 360 degrees. This allows for flexibility in the installation process while still ensuring that the conduit remains within acceptable limits.

When a person is moving towards an ultrasonic source, the frequency of the sound waves they hear increases. This is known as the Doppler effect. The increase in frequency results in a higher pitch of the sound. Therefore, the correct answer is a positive Doppler shift.

The correct answer is "all of the above" because all three equations mentioned (P=I2r, P=I x E, P=(E)(E) /R) are valid representations of Watt's Law. Watt's Law states that power (P) is equal to the product of current (I) and voltage (E), or power is equal to the square of current multiplied by resistance (R). Therefore, all three equations are correct and can be used to calculate power in different scenarios.

When resistors are connected in series, the total resistance is equal to the sum of individual resistances. According to Ohm's law, V = IR, where V is the voltage, I is the current, and R is the resistance. In a series circuit, the same current flows through each resistor. Therefore, the voltage is divided among the resistors based on their individual resistance values. The resistor with higher resistance will have a larger voltage drop, while the resistor with lower resistance will have a smaller voltage drop. Hence, the correct answer is "if they are in series."

The voltage drop across a device is calculated by multiplying the current through it by its resistance. This is determined by Ohm's Law, which states that the voltage drop (V) is equal to the current (I) multiplied by the resistance (R), V = I * R. Therefore, to find the voltage drop, we need to know the current flowing through the device and the resistance of the device.

Moving fan blades can disturb the microwaves in a "Dual Tec" detector. This is because the motion of the fan blades can disrupt the flow of microwaves, causing interference or false readings in the detector. The movement of the blades can create fluctuations in the microwave signals, leading to inaccurate detection or triggering of the detector. Therefore, it is important to ensure that the fan blades are not in close proximity to the detector to avoid any disturbances in its functioning.

The format "3/1" does not support a four-digit account number because it consists of two digits separated by a forward slash, indicating a division or ratio. It does not provide enough space to accommodate a four-digit number.

In an alarm system installed without an electrical permit, the installer can work after hours installing the transformer only if they contact the central station and receive authorization. This means that the installer must inform the central station about their intention to work after hours and wait for their approval before proceeding with the installation. Simply notifying the central station after the technician is finished is not sufficient. The client's authorization alone is also not enough to work after hours without an electrical permit. Installing outside of normal business hours is not allowed unless the central station has been contacted and authorized the installer.

When the plug on a properly installed 8 position jack is removed, the premises telephone will operate normally. This means that even without the plug, the telephone will still function as it should. The other options can be ruled out because they suggest that the telephone will not work properly or that the line seizure function will be affected, which is not the case according to the correct answer.

The minimum burial depth allowable for a communication cable in a vehicular area is 900 mm. This depth is necessary to ensure the cable is adequately protected from potential damage caused by vehicular traffic. A deeper burial depth provides a greater level of protection and helps to prevent accidental damage to the cable, ensuring reliable communication infrastructure.

Placing the detector in a position where the likely intruder motion is toward or away from the detector ensures the best protection of an area using an ultrasonic. This positioning allows the detector to effectively detect any movement of the intruder as they approach or move away from the detector. By focusing on detecting motion in this specific direction, the detector can accurately identify potential threats and trigger appropriate alarms or security measures.

The maximum VA output of a class I transformer is 1000 VA. VA stands for Volt-Ampere, which measures the apparent power of an electrical circuit or device. In this case, the transformer is capable of delivering a maximum apparent power of 1000 VA.

Soft iron is the best metal to use as a core for a magnetic door lock because it has high magnetic permeability. This means that it can easily conduct and concentrate magnetic flux, making it ideal for creating a strong magnetic field. Soft iron also has low coercivity, meaning it can be easily magnetized and demagnetized. Additionally, soft iron is relatively inexpensive and readily available, making it a practical choice for magnetic door locks.

All objects give off infrared radiation at normal temperatures. This is because all objects emit thermal radiation, which includes infrared radiation, as a result of their temperature. The amount of infrared radiation emitted by an object depends on its temperature, with hotter objects emitting more infrared radiation. Therefore, even inanimate objects at normal temperatures still emit infrared radiation.

The zone locator or zone identification LED is used with the PIR motion detector to decide which zones to mask if an area poses certain ambient problems. This means that the LED helps in determining which areas should be ignored or excluded from the detection process in order to avoid false alarms or unwanted triggers caused by environmental factors. By masking certain zones, the PIR motion detector can focus on detecting motion in the relevant areas, improving its accuracy and effectiveness.

Microwave detectors cannot penetrate through metal because metal is a highly reflective material for microwave radiation. When microwaves encounter metal, they are reflected back rather than passing through it. This property of metal makes it an effective barrier for microwave detection.

An alarm installer cannot connect a digital dialer directly to the telephone network. In order to connect a digital dialer to the telephone network, it requires the use of a telephone line interface device or a central monitoring station. This is because the digital dialer needs to be properly connected and configured to ensure reliable communication with the telephone network and the alarm system. Connecting it directly without the necessary interface or monitoring station can lead to communication issues and unreliable alarm monitoring.

In a parallel circuit, the currents in the individual branches flow equally only if all V/R values are identical in the branches. This means that the voltage-to-resistance ratio (V/R) must be the same in each branch. If the V/R values are different, the currents in the branches will also be different, resulting in an unequal distribution of current. Therefore, for equal currents to flow in each branch, the V/R values must be identical.

The correct answer is "all of the above" because the microwave detector relies on a doppler shift of frequency to trigger, which means it detects changes in frequency caused by the movement of objects. It also transmits an invisible electromagnetic wave, which allows it to detect objects without being visible. Additionally, microwaves easily penetrate glass, allowing the detector to work effectively even when there is a barrier.

When a resistor R2 is connected in parallel to the power supply, the total resistance of the circuit decreases. According to Ohm's Law (V = IR), as the resistance decreases, the current flowing through the circuit increases. In this case, since 2XR1 = R2, the total resistance of the circuit is reduced by half. Therefore, the current flowing out of the power supply will be 1.5 times as much as the first circuit.

Running cable across the tops of open joists in an attic is permitted if the height of the ceiling at that point is less than 1 meter. This means that as long as the distance between the top of the joists and the ceiling is less than 1 meter, it is acceptable to run the cable across. This requirement ensures that there is enough clearance for the cable and reduces the risk of damage or interference with the ceiling.

A PIR motion detector is designed to detect changes in infrared radiation caused by a moving object. The sensor used in a PIR motion detector is called a pyroelectric sensor. This type of sensor is made from pyroelectric materials that generate an electric charge when exposed to heat or infrared radiation. When a person or object moves within the detection range of the PIR motion detector, the pyroelectric sensor detects the change in infrared radiation and triggers the motion detection alarm. Therefore, the correct answer is pyroelectric sensor.

A 24 hour tamper loop is the most common way to protect an alarm circuit against compromise from bypassed wiring. This loop is designed to detect any tampering or attempts to disable the alarm system. It operates continuously, 24 hours a day, and any interruption or tampering with the loop will trigger an alarm. This ensures that the alarm system remains active and functional, even if someone tries to bypass the wiring or tamper with the circuit.

The correct answer is 50 cm. This distance is necessary to prevent interference or potential damage to the low-voltage alarm wire caused by the high voltage wire. Keeping a minimum distance of 50 cm ensures that there is enough separation between the two wires to maintain safety and proper functioning of the alarm system.

A quad-element circuitry is designed to eliminate false alarms in passive infrared detectors caused by internal sensor noise. This circuitry consists of four separate sensor elements that are strategically positioned to detect motion accurately. By using multiple sensor elements, the quad-element circuitry can differentiate between genuine motion and sensor noise, reducing false alarms. This technology improves the reliability and effectiveness of passive infrared detectors in detecting actual movement and minimizing false alarms.

Spacers on a magnetic contact-mounted on a steel door help to improve the operating range or gap. By adding spacers, the magnetic contact can be adjusted to ensure proper alignment and reduce any potential shrinkage or gaps between the door and the contact. This allows for better performance and functionality of the magnetic contact, enhancing its operating range or the maximum distance at which it can effectively detect the opening or closing of the door.

Ultrasonic detectors emit sound waves with frequencies higher than the upper limit of human hearing, which is 20 kHz. The given answer, 25-30 KHz, falls within this range and is therefore correct. Frequencies in the range of kilohertz are commonly used for ultrasonic applications such as distance measurement, object detection, and medical imaging. Higher frequency ranges such as megahertz and gigahertz are typically used for more specialized applications like material testing and industrial inspections.

The two most common acknowledge tones given by the alarm receiver to the digital dialer are 1400 Hz and 2300 Hz.

The voltage measured across the bus bars in a single-phase system is 240 VAC. This is the correct answer because in a single-phase system, the voltage is typically 120 VAC for residential applications and 240 VAC for commercial and industrial applications. Therefore, 240 VAC is the appropriate voltage measurement for the bus bars in a single-phase system.

A cellular alarm back-up transmitter would typically be connected to a cellular network, which is not mentioned as an option in the given choices. DVACS, intranet, and multiplex are not the appropriate types of networks for a cellular alarm back-up transmitter. Therefore, the correct answer is "none of the above".

A digital dialer is a device used for transmitting alarm signals from a central station to a monitoring center via telephone lines. It does not provide cut-line protection for the central station because it relies on the telephone lines, which can be easily cut or tampered with by intruders. Cut-line protection is important to ensure that the central station remains connected and able to receive alarm signals even if the communication lines are compromised.

The transmitting component of an ultrasonic device is responsible for converting electrical energy into mechanical energy. This means that it takes the electrical energy supplied to it and transforms it into mechanical vibrations or waves, which are then transmitted as ultrasonic waves. This conversion allows the device to generate the necessary vibrations that are used for various applications such as imaging, cleaning, or measuring distances.

When a switch is open, it does not allow any current to flow through it. Therefore, there is no voltage drop across the switch. The voltage measured across an open switch is the same as the source voltage because there is no load to cause any voltage drop. So, the correct answer is "the same as the source voltage."

Transmitter substitution refers to the act of replacing a transmitter with a different one. The statement suggests that any dedicated line system can detect this substitution. However, this statement is not true. While dedicated line systems may have security measures in place, they may not necessarily be able to detect transmitter substitution. Therefore, the correct answer is false.

Pulse-count technology benefits a PIR motion detector by making it more target discriminating. This means that the detector is able to distinguish between different types of movement and accurately detect whether the movement is towards the detector or not. This technology helps in reducing false alarms and increasing the accuracy of the detector in detecting intruders. By requiring multiple elements to be triggered before generating an alarm, it ensures that the detected movement is intentional and not caused by external factors such as pets or environmental changes.