Why we don’t use 2-20mA, 1-20mA, 3-20mA or 10-50mA signal instead of 4-20mA ? Answer : Generally, in a transistor some amount of voltage is required for turning it on… View Answer
How to calculate the flow rate in Vortex flow meter ? What is K factor ? Can you give me an example calculation to understand the same as better ? Answer : Vortex flow meters are flow sensors that detect the frequency of vortices… View Answer
How to run PHP in command line ? Answer : PHP is a server side scripting language, a lot of development using PHP… View Answer
How to download a php script directly in your script page ? Answer : Here we create a PHP script, name it “download.php”… View Answer
Explain about error handling in php ? Answer : Error handling is the process of catching errors… View Answer
How to find out, how a user visited a particular page ? Answer : We add a counter in that page…. View Answer