6. In cut off mode a) The base-emitter junction is forward biased and emitter-collector junction is reversed biased b) The base-emitter junction is forward biased and emitter-collector junction is forward biased c) The base-emitter junction is reversed biased and emitter-collector junction is reversed biased d) The base-emitter junction is reversed biased and emitter-collector junction is forward biased 7. For the BJT to operate in active mode Collector-Base junction must be a) Heavily doped b) Must reversed bias c) Must be forward bias d) Lightly doped 8. The correct relation between the transistor parameters a and ẞ are related by a) B b) 8= c) " E 1-a al, 1+a 1+8 B B 6 1+B