The 1951 Class Day Committee elected its officers yesterday afternoon. Robert P. Hyde of Belmont and Winthrop House was chosen chairman of the 12-man group; he will direct the committee's activities while it prepares for Commencement Week.

Elected treasurer of the committee was Alvin Becker of Waltham and Adams House. Douglas M. Fouquet of Bayside, L.I., and Dunster was named secretary.

The meeting was the committee's first since its election on March 17. Members discussed preliminary plans for senior activities during Commencement Week. The Class Day Committee's program last year included formal and informal dances, an outdoor buffet supper, and a moonlight sail in Boston Harbor.