Exam 9: Timing Relays

Electronic timers have become increasingly popular in industrial applications.

A DC series relay is used as an adjustable resistor to vary the time.

Timing relays are used for any application where the operating sequence requires a delay.

The exact timing value for any position within the timing range must be___________ .

Timers that can be set for multiple functions or as off-delay timers generally plug into_________pin tube sockets.

Motor-driven timers are used where frequent starting of large motors is required.

When there are several timers that meet the requirements of a given application, it is advisable to select the timer with the______________ .

Nontimed contacts are controlled directly by the timer coil, as in a(n) _______control relay.

Pneumatic timers have good repeat accuracy.

Off-delay timers must have power applied__________ to permit the timing circuit to operate.