Definition: A type of lipid that consists of glycerol with three fatty acids bound to it. A high triglyceride count in a person's blood is a symptom of diseases such as diabetes. The body needs insulin to remove excess triglycerides from the blood.
Answers: Circuits that require the same voltage are best connected in parallel as the same voltage is applied to all devices. The advantage is that if a device fails the rest of the devices in a circuit still operate.
One common I/O module (board) is used to supply 8, 16 or more points. Discrete output circuits from a DCS typically use low power level signals (transistors, micro relays) which cannot be sent directly to the field devices such as electromagnetic valves or motor control circuits. That is why interposing relays are often necessary.