Answer the following statement(s) true (T) or false (F)

1. The on-delay relay is often referred to as DODO.
2. Pneumatic timers are affected by variations in ambient temperature or atmospheric pressure.
3. Pneumatic timers are adjustable over a wide range of time periods.
4. Instantaneous contacts change their positions immediately when the coil is energized and change back to their normal positions immediately when the coil is de-energized.
5. Clock timers are generally used to operate several switches.


1. False
2. False
3. True
4. True
5. False

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