  The theoretical concept of Chakrabarti-Titarchuk two Component Advective Flow
(TCAF) model was introduced around two decade ago in mid-90s. Recently after
the inclusion of TCAF model into XSPEC as an additive table model, we find that
it is quite capable to fit spectra from different phases of few transient black
hole candidates (TBHCs) during their outbursts. This quite agrees with our
theoretical understanding. Here, a brief summary of our recent studies of
spectral and temporal properties of few TBHCs during their X-ray outbursts with
TCAF will be discussed.
