BJT

In a BJT

• The base region is sandwiched between emitter and collector

• The collector is sandwiched between base and emitter

• The emitter region is sandwiched between base and collector

• None of the above

Amplifiers and oscillators using BJT, operate in ...... region

• Inverted mode

• Active

• Cut off

• Saturation

In a BJT as collector to base voltage increases the emitter current

• Remains same

• Increases slightly

• Decreases slightly

• Depends upon doping of the emitter region

The BJT was invented by

• W.H Brattin

• Bardeen

• William Shockley

• All of the above

The power rating of a BJT is determined by which of the following

• Collector base area

• Base width

• Heat sink

• Emitter base junction area

Smallest current in BJT

• I_E

• I_C

• I_B

• I_D

α_DC=

• β_DC/1+β_DC

• β_DC/1-β_DC

• 1-β_DC/1+β_DC

• 1+β_DC/1-β_DC

Transistor must not operate in

• cutoff region

• linear region

• saturation region

• breakdown region

When emitter is at ground, Voltage across resistor connected to base of general BJT model will be

• V_BB(base supply)+V_BE

• V_BB(base supply)-V_BE

• V_BB(base supply)+V_BE/R_B

• V_CC(collector supply)-V_Rc(Collector connected resistor)

In pnp transistor, base has

• p region

• n region

• p-n region

• neutral