I was given a task to generate a sine wave by using TLC2274ACN. The circuit is as follows. But at the output i'm getting a DC voltage when I measured it in Oscilloscope. I believe that the circuit is pretty much correct as I have gone though several websites but in those websites the opamps are different from what I used in my circuit.
For a wien bridge oscillator the gain needs to be 3 to sustain oscillation but, to begin oscillation, it needs to be higher. Your gain is 1 +363/180 = 3.0167 and too close to begin oscillation (especially given that if you used 1% resistors the gain might be only 1.98).
The next problem will be that when you increase the gain to begin oscillation you will find that the sine wave output ramps up in amplitude and clips the op-amp rails. So, you have to use a non-linear gain feature like this: -
The diodes act like open circuits when oscillation begins (maybe R3:R4 is set at 5:1 or thereabouts) and as amplitude increases the diodes start to conduct and shunt that ratio of R3:R4. This of course can lead to unacceptable sinwave distortion so other more complex methods are used that I'll leave with you to research.
Of course, as per what Olin said, I suspect that you are overloading the op-amp with too small values for your R5 and R6 but it might work if you increased your R6 to 470 ohms.