Electrical Circuit Contactor Quiz

What is the function of a contactor in an electrical circuit?

• To convert electrical energy into mechanical energy

• To control a larger current with a smaller current

• To reduce the voltage supply to the circuit

• To provide insulation to electrical connections

Which type of applications commonly use contactors?

• Domestic applications

• Industrial applications

• Low-voltage applications

• Portable applications

What type of control can contactors provide?

• Temperature control

• Speed control

• Mechanical or electronic control

• Voltage control

What are the possible configurations of a relay?

• Normally open, Normally closed, Changeover

• Normally active, Normally inactive, Changeover

• Always open, Always closed, Static

• Open circuit, Closed circuit, Bypass

What is the function of the 'Armature' in the relay diagram?

• To provide a feed from the control circuit

• To insulate the push rod

• To act as a pivot point

• To move the contact

What is one of the applications of solenoids mentioned in the material?

• Lighting systems

• Car starter

• Water heating

• Sound systems

Which component is responsible for creating the magnetic field in a solenoid?

• Armature

• Control valve

• Coil

• Housing

What do fuses provide protection against?

• Power surges

• Overcurrent and earth leakage

• Short circuits

• Voltage spikes

What is overcurrent?

• Current that is below the rated value

• Current that is interrupted by a circuit breaker

• Current exceeding the rated value of a cable's current-carrying capacity

• Current that is stable and constant

What is an overload in the context of overcurrent?

• A fault in the electrical system

• An overcurrent occurring in a circuit that is not electrically sound

• An overcurrent occurring in a circuit that is electrically sound

• A drop in current below the required level