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Engineering - Civil Enginnering

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With reference to the network shown in Fig. , which statement is incorrect ?

A.	Events 3 and 4 occur after event 2.	B.	Event 7 can occur after event 4.
C.	Event 7 precedes event 6.	D.	Event 5 follows event 3.

In the network shown in Fig., the concurrent and preceding activities corresponding to activity 2-4 are respectively

A.	1-2 and 4-7	B.	2-3 and 1-2
C.	2-3 and 4-7	D.	1-2 and 3-6

Which of the following does not represent an activity?

A.	site located	B.	foundation is being dug
C.	the office area is being cleaned	D.	the invitations are being sent

10.

Earliest finish of an activity is always

A.	greater than earliest event time of the following node	B.	less than earliest event time of the following node
C.	less than or equal to earliest event time of the following node	D.	greater than or equal to earliest event time of the following node

11.

Select the incorrect statement.

A.	Earliest start of an activity is the early event time of the node it leaves.	B.	Latest finish of an activity is the late event time of the node it enters.
C.	Latest start of an activity is its latest finish minus its duration.	D.	none of the above

12.

In the network shown in Fig. the earliest start time of activity 5-6 is (the number on the arrow shows duration of the activity)

A.	7	B.	8
C.	9	D.	5

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