
At 9.00 am, the local note stood at 4.2925/2955 against the greenback versus Monday’s close of 4.2950/2980 .
Yellen is expected to make a semi-annual testimony before the US Congress on Wednesday and Thursday.
A dealer said the gains in ringgit was, however, capped by the US job data released last week, which surged more-than-expected in June, signalling a recovery in the labour market that could keep the Fed on course for a third interest rate increase this year.
The ringgit was traded mixed against other major currencies.
It appreciated against the Singapore dollar to 3.0975/1019 from 3.0982/1026 on Monday but slid against the euro to 4.8909/8956 from 4.8899/8937.
The ringgit rose against the yen to 3.7597/7637 from 3.7600/7629. It was, however, easier versus the pound at 5.5275/5317 from 5.5247/5298 on Monday.