Electrical Technology

What is the function of a solenoid?

• Generate electricity

• Create a magnetic field

• Control the flow of liquids

• Produce heat

What is the structure of a solenoid?

• Copper conductor

• Coil of wire and iron core

• Plastic tubing

• Aluminum casing

What is the primary application of solenoids in electropneumatic controls?

• Switching of valves

• Generating sound waves

• Measuring pressure

• Controlling temperature

What is the construction of a relay?

• Hydraulic pump

• Pneumatic cylinder

• Mechanical lever

• Electromagnetically actuated switch

What is the function of a retentive relay?

• Responds to current pulses

• Isolation of control circuit from main circuit

• Signal multiplication

• Delaying and conversion of signals

What is the purpose of a time relay?

• To delay the switching of contacts

• To switch high currents

• To generate electricity

• To control temperature

What are the typical features of a contactor?

• Open chambers

• Double switching

• Single switching element

• Negative-action contacts

What is the primary application of contactors?

• Switching of valves

• Generating sound waves

• Measuring pressure

• Control functions and logical associations

What is the main difference between a solenoid and a contactor?

• Structure and design

• Material and color

• Size and weight

• Function and application

What is the purpose of the iron core in a solenoid?

• To increase the strength of the magnetic field

• To generate electricity

• To reduce the magnetic field

• To control the flow of liquids