What is the main function of an alarm system?

• Increase the speed of electrical current

• Detect and warn about potential dangers

• Supply power to appliances

• Reduce electricity consumption

Which device is commonly used to produce an audible alarm in security systems?

• Transformer

• Buzzer

• Circuit breaker

• Resistor

What is the purpose of a relay in an alarm system?

• Convert AC to DC

• Store electrical energy

• Control the circuit by opening or closing contacts

• Increase voltage supply

Which of the following best describes a sensor?

• A device that consumes electricity

• A device that detects and responds to a signal

• A device that reduces noise in circuits

• A device used to store energy

What type of circuit is commonly used in alarm systems?

• Series circuit

• Parallel circuit

• Open circuit

• Both a and b

Why is it important to install a control system in an alarm setup?

• To allow manual or automatic operation of alarms

• To increase the length of alarm wiring

• To store electricity for later use

• To make the system more complex

Which device is used to indicate a visual alarm signal, often seen in hospitals and elevators?

• Buzzer

• Annunciator

• Relay

• Circuit breaker

How does a photoelectric sensor work in an alarm system?

• It detects changes in air pressure

• It detects motion using ultrasonic waves

• It detects changes in light beams when broken or reflected

• It detects temperature variations

What is the purpose of a push button in an alarm system?

• To reset the alarm automatically

• To act as a momentary contact switch for activating alarms

• To increase alarm volume

• To convert AC voltage into DC voltage

Which of the following is a requirement when installing alarm systems according to PEC (Philippine Electrical Code)?

• Alarm devices should be mounted without following any standards

• Signaling wires should not be placed close to power lines unless enclosed in tubing

• The system should only use a single type of sensor

• The installation should not include any relays