Analog Electronics
In modern the MOSFET, the material used for the gate is

  heavily doped poly crystalline silicon.
  high - purity silica.
  epitaxially grown silicon.
  high - purity silicon.

ANSWER DOWNLOAD EXAMIANS APP

Analog Electronics
In all base driver amplifiers

None of these
ac emitter voltage is 180° out of phase with ac base voltage
ac collector voltage is 180° out of phase with ac base voltage
ac collector voltage is in phase with ac base voltage

ANSWER DOWNLOAD EXAMIANS APP