In the home, water hammer may occur when a dishwasher, washing machine, or toilet shuts off water flow. The result may be heard as a loud bang, repetitive banging (as the shock wave travels back and forth in the plumbing system), or as some shuddering.o for a valve closing instantaneously, the maximum magnitude of the water hammer pulse is: where Î´ P is the magnitude of the pressure wave (Pa), Ï is the density of the fluid (kgm â3), a0 is the speed of sound in the fluid (ms â1), and Î´ v is the change in the fluid's velocity (ms â1).
CHKD - Children's Hospital of The King's Daughters, All Acronyms, viewed January 26, 2018, <https://www.allacronyms.com/CHKD/Children%27s_Hospital_of_The_King%27s_Daughters> mla All Acronyms.
CHK is the Windows file fragment extension that cleaned from the hard disk by ScanDisk or CHKDISK. CHD can be stored in the FOUND folder after a disk scan has been performed. CHK files also can be deleted since the information has been moved somewhere else on the disk. open chk file on Windows: * DIY DataRecovery CHK-Mate * UnCHK * FileCHK. Source(s): http://www.downloadatoz.com/file-extensions/chk-file-extension.html. Rex Â· 7 years ago.