Electrical Circuit Design
Q1. What is the primary function of a PLC in a 3-way switch system?
a. To provide a user interface
b. To control the logic of the switch system
c. To supply power to the system
d. To act as a backup power source
Q2. What does a 3-way switch allow in a multi-floor building?
a. Control of the same light from three different locations
b. Control of three different lights from one location
c. Control of three different loads independently
d. Backup control in case one switch fails
Q3. What happens when a relay coil is energized in a 3-way switch system?
a. The relay contacts change state
b. The relay becomes inoperative
c. The load is disconnected
d. The system shuts down
Q4. Which of the following is a benefit of using ladder logic for implementing a 3-way switch?
a. It requires less physical space
b. It simplifies troubleshooting and maintenance
c. It reduces power consumption
d. It increases the speed of the system
Q5. How many floors can be controlled by the 3-way switch system described in the experiment?
a. One floor
b. Two floors
c. Three floors
d. Four floors
