Please give the full words of the abbreviations.JFETMESFETHEMTMODFET2DEG
A JFET is a three-terminal device which is ().
A. current-controlled device
B. voltage-controlled device
For a MESFET, the contact between the gate and channel is ( ).
A. Ohmic contact
B. Schottky contact
C. Hetero contact
The band gap of AlGaAs is ( ) than that of GaAs.
A. larger
B. smaller
C. as same as