Placement Paper

ONGC Electronics and Communication EngineeringCommunication Systems practice questions with answers,ONGC model questions for practice,ONGC technical questions with answers

 1.     The input to a coherent detector is DSB-SC signal plus noise. The noise at the detector output is

(a) The in-phase component  (Ans)

(b) The Quadrature-component

(c) Zero

(d) The envelope

Solution : The noise at (DSB-SC) detector output is only in phase component

2.     The noise at the input to an ideal frequency detector is white. The detector is opera