GATE for Instrumentation

Piezoelectric Sensor Piezoelectric Transducer   It is example of active and passive transducer.  Piezo-electric effect Direct Effect: generating an electric charge when subjecting it to a strain Indirect Effect: Generating a mechanical strain in response to an applied electric field   Piezoelectric Material:  Natural :  Tourmaline; Quartz; Topaz; Rochelle salt  Synthetic: Barium Titanate (BaTiO 3 ); Lead Zirconate (PbZio 3 ); Polymer Films (Polyvinylidene fluoride (PVDF), (-CH2-CF2-)n). Applications:  Mechanical variables such as pressure, force and acceleration.  Gas Lighters Quartz clocks Loudspeaker Signal Conditioning Circuit: Charge Amplifier  Formula for piezoelectric transducer 

Why do we need previous years papers?  (GATE 2019 including GATE 2018 paper)   Give detail idea about different topics Check your knowledge on particular topic Give confidence about your preparation  See previous years paper before starting of preparation (Bird view) Solve previous years paper after preparation Any difficulty, refer theory Good paper solution   Made Easy / ACE Hyd Volume 1 . /  Volume 2

GATE 2018 Important Dates GATE 2018 Syllabus Instrumentation