140-160

The passage compares latching relays to what other type of switch?

• Arotaryswitch

• A limit switch

• A toggle switch

• A pushbutton switch

. What is the main advantage of a solid-state relay (SSR) compared to an electromechanical relay?

• Lower cost and simpler design

• Higher voltage and current ratings

• Ability to handle both AC and DC currents

• Virtually unlimited cycle life and faster response time

Why do SSRs tend to generate more heat than similar electromechanical relays when carrying the same current?

• The lack of moving parts increases friction

• The semiconducting materials have higher resistance

• SSRs use less efficient switching mechanisms.

• SSRs require a heat sink for proper operation.

. In the provided schematic diagram, the dashed line represents the influence of the:

• High-current power circuit on the relay housing

• Electromagnet coil on the switch mechanism.

• Relay housing on the external environment.

• Control circuit voltage on the switch contacts.

what do the terms “Form-A” and “Form-B” correspond to in relay terminology?

• Double-pole and single-pole configurations

• High-current and low-current contacts

• Normally open and normally closed contacts,

• The number of throws a relay can handle

Which type of relay contact is described as having one moving contact and two stationary contacts it can touch?

• Single-pole, single-throw (SPST)

• Double-pole, single-throw (DPST)

• Double-pole, double-throw (DPDT)

• Single-pole, double-throw (SPDT)

What does the “COM” terminal designation typically represent on an SPDT relay?

• A high-voltage connection point

• The common connection to the electromagnet coil

• A designation specific to a particular relay brand

• The moving contact of the switch mechanism

How does a DPDT relay differ from an SPDT relay in terms of its contact functionality?

• A DPDT relay offers isolated control of two independent circuits.

• A DPDT relay has two separate moving contacts

• There is no functional difference between the two types.

• A DPDT relay can handle higher current than an SPDT relay

What is the purpose of the commutating diode connected in parallel with a relay coil?

• To block reverse current flow in the control circuit

• To provide a safe path for current dissipation during de-energization

• To increase the magnetic field strength of the coil

• To regulate the voltage supplied to the coil

What is the primary factor determining a relay coil rating?

• The current required to reliably activate the iron armature

• The voltage required to overcome the relay’s internal spring tension

• The maximum current the coil can handle without overheating

• The voltage drop across the coil when energized