Certain Contacts of a Mechanical Timing Relay Are Designed to Operate

question 26

Multiple Choice

Certain contacts of a mechanical timing relay are designed to operate at a preset time interval:

• A)after the coil is energized.
• B)after the coil is de-energized.
• C)after power is applied to the circuit.
• D)either a or b.

---

Definitions:

White Iron

A hard, brittle form of cast iron, made by cooling the casting quickly, with a microstructure of cementite and pearlite.

Cold Shorting

A material property where a metal becomes brittle at low temperatures, making it prone to cracking when subjected to stress.

Machining Lugs

Protrusions on a part designed to provide additional material for clamping or holding during machining processes.

Castings

The process of pouring liquid material into a mold to solidify and form a specific shape, commonly used with metals and plastics.