This question has more than one correct answer and all must be selected.

Select all the statements that are not true.

Question $2$ ?options:

Reliability is the probability that a machine part or product will function properly for a specified time regardless of conditions.

Preventive maintenance is nothing more than keeping the equipment and machinery running.

Adding an additional part to a component or product ordinarily reduces reliability by introducing an additional source of failure.

A redundant part or component increases reliability because it is connected in series, not parallel.

A redundant part decreases reliability if the reliability of the redundant part is lower than that of the part it is backing up $.$