PPSC - Past Papers - Most Repeated — Test 20

Correct Answer: D. D. View
Explanation: “” (an arrow with solid line) is used to represent an event. An arrow with a dotted line is used to represent a dummy activity. A circle is used to represent an event. is used to represent the critical activity.

Correct Answer: A. A. Start the motor
Explanation: Start the motor is an example of an event as it describes the start of an activity. It won’t consume time. Arrange foreign exchange, refund money and install machinery are activities as they can be divided into many sub-tasks and consumes time.

Correct Answer: D. D. Arrange foreign exchange
Explanation: Start the motor, loan approved, refund successful are examples of events as they describe either the start of an activity or the end of an activity. These even won’t consume time. Arrange foreign exchange is an activity as it can be divided into many sub-tasks and consumes time.

Correct Answer: B. B. Activity 6
Explanation: Since activity 6 is represented by an arrow with a dotted line, it is a dummy activity. A dummy activity may be critical or non-critical. In the given network diagram, the dummy activity is non-critical.

Correct Answer: A. A. An event
Explanation: Alphabet “B” is represented inside a circle. An event is represented by a circle in the network diagram. Hence, it is an event.

Correct Answer: B. B. An activity
Explanation: Since activity 4 is represented by an arrow with a solid line, it is an activity. A critical activity is represented by an arrow with a double solid line and a dummy activity by an arrow with a dotted line.

Correct Answer: D. D. A critical activity
Explanation: Since activity 2 is represented by an arrow with a double solid line, it is a critical activity. A delay in the critical activity will delay the entire project duration.

Correct Answer: B. B. Ii only
Explanation: A Critical path always has zero float. Critical path will have only critical activities which upon delayed will delay the entire project. A critical path is the longest path and consumes maximum time and resources.

Correct Answer: B. B. When earliest start time (est) plus the time taken by it is equal to the latest finish time (lft)
Explanation: An activity is called critical activity if and only if the earliest start time (EST) plus the time taken by it is equal to the latest finish time (LFT). In other words, if an activity is delayed from the actual timeline and because of this if it affects the entire project duration, then the activity is known as a critical activity.

Correct Answer: C. C. Network diagram
Explanation: Network diagram is also known as an arrow diagram. It schematically shows the various events and activities in the order of which they need to be completed and their inter-relationships and inter-dependencies.