Install .ipa to iPad with or without iTunes
No need to bother with iTunesConnect for sharing your adhoc builds. Just upload your ipa file to diawiand after successful uploading you will get a link open the link in safari and you will be asked to install app. Tap on install and enjoy
In Xcode 5 open the organizer (Window > Organizer) and select "Devices" at the top. Your plugged in device should show up on the left hand side. Drag the IPA file over to that device.
In Xcode 6 and Xcode 7 open Devices (Window > Devices). Again your device should show up in the left hand column. Drag the IPA file to the list of apps underneath "Installed Apps".
For iOS 9 devices, refer to this post on how to get the app running after doing this.
Yes, you can install IPA in iPad, first you have to import that IPA to your itunes. Connect your iPad to iTunes then install application just by click on install and then sync.