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A few quasi-exactly solvable models are studied within the quantumHamilton-Jacobi formalism. By assuming a simple singularity structure of thequantum momentum function, we show that the exact quantization condition leadsto the condition for quasi-exact solvability.Comment: 7 pages, RevTex Style, corrected some typos. The main results of the  paper remain unchanged. However a set of new conclusions about the zeros of  the eigenfunction have been included. The manuscript has been accepted for  publishing in Jour. Phys. A: Mathematical and Genera

A study of quasi-exactly solvable models within the quantum Hamilton Jacobi formalism