BEL-22216 Chapter3: Bipolar Junction Transistor- MCQ Questions with answers

 The term transistor refers to__________.

a)      Transfer Resistor

b)      Transformer

c)       Transfer Amplifier

d)      None of above

 

Transistor is _________

a)      Unipolar component

b)      Bipolar component

c)       Passive component

d)      None of above

 

Types of transistors are

a)      PNP & NNP

b)      N-channel

c)       NPN & PNP

d)      P-channel

 

In the symbol of transistor arrow is placed on _______ terminal.

a)      Drain

b)      Source

c)       Base

d)      Emitter

 

In the symbol of transistor arrow head indicates

a)      P to N direction

b)      Direction of ground terminal

c)       Base terminal

d)      Direction of voltage

 

In which region transistor acts as open switch?

a)      Active region

b)      Ohmic region

c)       Saturation region

d)      None of above

 

In bipolar devices, current conduction is due to

a)      One type of polarity

b)      Majority charge carriers

c)       Minority charge carriers

d)      Both polarities

 

Transistor is __________ controlled device

a)      Voltage

b)      Current

c)       Amplitude

d)      all of above

 

Which not type of transistor configurations?

a)      Common Emitter

b)      Common Base

c)       Common source

d)      Common collector

 

Transistor works as amplifier in

a)      active region

b)      cut off region

c)       saturation region

d)      all of above

 

Location of Q point for amplifier application is

a)      in the cut off region (on x-axis)

b)      in saturation region (on y-axis)

c)       in active region (center of DC load line)

d)      all of above

 

In transistor, DC load line refers to

a)      No signal value of IC and VCE

b)      Line drawn on transistor characteristic under zero signal condition

c)       Both of above

d)      None of above

 

Alpha is the current gain of transistor in ____________ configuration.

a)      common collector

b)      common base

c)       common emitter

d)      none of above

 

Alpha (current gain of transistor) is defined as

a)      ratio of collector current to emitter current

b)      ratio of collector current to base current

c)       ratio of change in collector current to change in emitter current

d)      ratio of emitter current to base current

 

Beta is the current gain in _______________ configuration.

a)      common emitter

b)      common collector

c)       common base

d)      none of above

 

Transistor amplifier is used to________

a)      increase the strength of weak AC signals

b)      convert AC to DC

c)       generate signals of particular frequency

d)      increase the strength of weak DC signals

 

Thermal runway is

a)      related to rectifier circuit regarding ripple factor

b)      related to transistor which is self destruction of stabilized transistor

 

Need of transistor biasing is__________

a)      for faithful operation of transistor

b)      use transistor for different application

c)       Both of above

d)      None of above

 

In RC coupled amplifier, R1 & R2 resistors are used for_______

a)      voltage divider biasing

b)      stabilizing the transistor

c)       oppose the flow of AC current

d)      Pass AC and block DC

 

In RC coupled amplifier_________________ is used for stabilization

a)      Collector resistor (Rc)

b)      Coupling capacitor (Cc)

c)       Emitter resistor (Re)

Input capacitor (Ci)