Working of energy source

 

working of energy source

Windows 7 Shortcut Keys

+ Spacebar	All the open windows transparent and view desktop icons.
+ D	View or hide desktop.
+ left/right	Dock the Selected window to left or right side of the screen.
+ Up/Down	Minimize, maximize or restore the selected windows.
+ Tab	Launches the 3D representation of the opened windows and by pressing the Tab again, flips through the windows.
+ B	Deliver focus to the hidden icons in the system tray.
Alt + Ctrl + Tab + Up/Down/Right/left	Flip the Windows.
+ T	Shows the icons in the taskbar menu. holding the [Windows] and keep on pressing [T], you can move through the items from left to right.
+ Shift + (1-9)	Start travelling between the respective taskbar icons.
+ Shift + Right/left	Move the select window from one monitor to another.
+ P	Select the display for presentation mode
+ (+/-)	Magnify, zoom in or out of your screen.
Ctrl + Alt + L	Switch on the lens mode of the window.
Ctrl + Alt + F	Back from the docked or Lens mode.
+ X	Launches Windows Mobility Center.

Microsoft excel shortcut key

F2	Edit the selected cell
F5	Go to a specific cell
F7	Spell check selected text and/or document
F11	Create chart
Ctrl + shift + ;	Enter the current time
Ctrl + ;	Enter the current time
Alt + Shift + F1	Insert new worksheet
Shift + F3	Open the excel formula window
Shift + F5	Bring up search box
Ctrl + A	Select all contents of worksheet
Ctrl + B	Bold highlighted selection
Ctrl + I	Italicize highlighted selection
Ctrl + C	Copy selected text
Ctrl + V	Paste
Ctrl + D	Fill
Ctrl + K	Inset link
Ctrl + F	Open find and replace options
Ctrl + G	Open go-to options
Ctrl + H	Open find and replace options
Ctrl + U	Underline highlighted selection
Ctrl + Y	Underline selected text
Ctrl + 5	Strike-through highlighted selection
Ctrl + O	Open options
Ctrl + N	Open new document
Ctrl + P	Open print dialog box
Ctrl + S	Save
Ctrl + Z	Undo last action
Ctrl + F9	Minimize current window
Ctrl + F10	Maximize currently selected window
Ctrl + F6	Switch between open workbooks/ windows
Ctrl + Pg Up & Pg Dn	Move between excel worksheets in the same document
Ctrl + Tab	Move between two or more open excel files
Alt + =	Create formula to sum all of above cells
Ctrl + ‘	Insert value of above cell into current cell
Ctrl + Shift + !	Format number in comma format
Ctrl + Shift + $	Format number in currency format
Ctrl + Shift + #	Format number in date format
Ctrl + Shift + %	Format number in percentage format
Ctrl + Shift + ^	Format number in scientific format
Ctrl + Shift + @	Format number in scientific format
Ctrl + right	Move to next section of text
Ctrl + space	Select entire column
Shift + space	Select entire row
Ctrl + W	Close document

MS & OR, Assignment-8 (CPM & PERT)

(Q-1) A project has following characteristic

Activity	Preceding activity	Expected completion Time ( in weeks)
A	None	5
B	A	2
C	A	6
D	B	12
E	D	10
F	D	9
G	D	5
H	B	9
I	C, E	1
J	G	2
K	F, I, J	3
L	K	9
M	H, G	7
N	M	8

i)   Draw a PERT network for this project.

ii)  Find the critical path and the project completion time.

iii) Prepare an activity schedule showing the ES, EF, LS, LF and slack for each activity.

iv)  Will the critical path change if activity G takes 10 weeks instead of 5 weeks? If so, what will be the new critical path?

  

(Q-2). A project with the following six activities is listed with the normal time period for completion of each activity. Draw the network diagram and find out the critical path. Also prove that an activity C is critical activity using early and late start and finish timings.

Activity	A	B	C	D	E	F
Immediate Predecessor	---	A	A	B	C	D, E
Time Duration	4	8	8	5	7	5

(Q-3)  What is dummy activity? Why do we need dummy activities in PERT network? Explain the same in brief and support your answer with neat sketches.

(Q-4)  Find the Shortest path for the given network below, Where “( )” indicates arc length values.