Can we short the neutral to earth (ground) at entry point of our home electrical supply?
As the comments already said, this is most likely due to a break in the neutral:

A floating cable next to the phase wire collects some voltage due to capacitive/inductive coupling. As your measurement device also plays a role, you usually will not measure 77V, 151V and 228V (=151V+77V) between the three wires. However, 77V is a typical voltage measured in this case.

Finally, neutral is broken, because you measure the expected voltage between earth and phase, and neutral gives strange results. If you connect any load to the circuit, you will see that neutral will be at 228V to earth an 0V to phase.

Once I had the same problem. Finally, there was a single luster terminal where all neutrals of a room (five) were connected to. One of them was pushed in too far, the part inside the terminal was covered by insulation. The screw bit into the insulation, and it was working for 20 years. From one day to the other, the connection became loose. This could have ended up in a disaster, but there was not even a sign of heat at the terminal.