Internet of Things using arduino
Q1. What is the function of the coil in a relay?
a) To provide mechanical support
b) To generate a magnetic field
c) To store electrical charge
d) To control temperature
Q2. Which component of a relay module is used to connect external wires or conductors?
a) Coil
b) Contacts
c) Enclosure
d) Terminals
Q3. Which part of the relay is attracted or repelled by the magnetic field generated by the coil?
a) Contacts
b) Enclosure
c) Frame
d) Armature
Q4. What role do relays play in electrical circuits?
a) They amplify signals
b) They provide isolation between circuits
c) They store energy
d) They measure resistance
Q5. In what type of circuits are relays commonly used?
a) Analog circuits
b) Digital circuits
c) Both analog and digital circuits
d) None of the above
