What happens to inductor when switch is closed?

What happens to inductor when switch is closed?

When the switch is first closed, the current through the inductor is zero, because it cannot change instantaneously. This means that the inductor acts like an open circuit, so all the voltage is across the inductor. The changing magnetic field creates a back emf which acts to oppose the current in the inductor.

Does the current lead or lag the emf?

In circuits with primarily inductive loads, current lags the voltage. This happens because in an inductive load, it is the induced electromotive force that causes the current to flow.

What is the difference between lag time and lead time?

Lead time is overlap between tasks that have a dependency. For example, if a task can start when its predecessor is half finished, you can specify a finish-to-start dependency with a lead time for the successor task. You enter lead time as a negative value. Lag time is a delay between tasks that have a dependency.

What is the duration of a milestone?

Milestones typically have zero duration; however, some milestones may need a duration. For example, your project has an approval milestone at the end of a phase, and you know that the approval process will take a week.

What does SS and FF in MS Project?

Each predecessor task is represented by its task ID number, which may be followed by a dependency type and the lead or lag time. The dependency types for predecessors are FS (finish-to-start), FF (finish-to-finish), SS (start-to-start), and SF (start-to-finish).

What are the four types of dependencies?

There are 4 types of dependencies in project management viz. Mandatory, Discretionary, External, & Internal.

How do you identify dependencies?

The dependencies identification and monitoring process consists of 4 simple steps:

1. Identify and categorize the dependencies involved in your initiative.
2. Validate the dependencies listed by voting for those that you agree impact your initiative.
3. Rate the impact of each dependency.

What does dependency mean?

dependence

What does start-to-start mean?

Start-to-Start is a logical relationship that states that for one project to begin, another must also be underway. For example, the writing of a business proposal must have begun in order for editing of the proposal to take place.

Is the critical path the longest path?

Fact: The critical path is the longest path through the network diagram, meaning the sequence of activities that collectivity define the starting and ending dates for the project and have no slack or float time (excess time). Conversely, non-critical paths have slack time which is the amount of time a task can slip.

What is a start to start relationship between two activities?

Definition of Start to Start Relationship Start to Start is a Logical Relationship in which a Successor Activity cannot start until a Predecessor Activity has started. In simple words we can say that, the Start of a Successor Activity is Dependent on Start of the Predecessor Activity.

Is Critical Path the longest or shortest?

Yes, the critical path is the longest overall duration for the sequenced activities. It is not the shortest project duration and it is the shortest time possible to complete the project.