What should a bad motor read in ohms if it is bad?

If an Alternating Current (a/c) motor is bad.

The resistance will read very hi as in an open winding. ie: meg ohms

Or very low as in a shorted winding. ie: 0.01 ohms

It must not read any resistance to the housing or shaft.

The resistance between leads should be a reasonable value and can be determined with : electromotive force divided by inductance equals resistance.

example: 215 volt alternating current with name plate full load amperes of 10 should read very near 21.5 ohms resistance between leads.