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Physics Mcqs

In the transistor schematic symbol, the arrow______________?

  • (A)  is located on the emitter
  • (B)  is located on the base
  • (C)  is locate on the collector
  • (D)  points form north to south
Submitted By :Ali Uppal


Which one of the following is not a donor impurity ?

  • (A)  antimony
  • (B)  phosphorus
  • (C)  aluminium
  • (D)  arsenic
Submitted By :Ali Uppal


Forward current through a semi conductor diode circuit is due to____________?

  • (A)  minority carriers
  • (B)  majority carriers
  • (C)  holes
  • (D)  electron
Submitted By :Ali Uppal


Acceptor and donor impurities donate______________?

  • (A)  n-carriers only
  • (B)  p-carriers only
  • (C)  p-carriers and n-carriers respectively
  • (D)  n-carriers and p-carriers respectively
Submitted By :Ali Uppal


The electronic circuits which implement the various logic operations are called_____________?

  • (A)  Logic gates
  • (B)  Boolean algebra
  • (C)  Amplifier gain
  • (D)  Logic functions
Submitted By :Ali Uppal


In forward bias the width of potential barrier_____________?

  • (A)  Increases
  • (B)  Decreases
  • (C)  Remains same
  • (D)  No effect
Submitted By :Ali Uppal


Submitted By :Ali Uppal


The working of transistor as amplifier is similar to________________?

  • (A)  Step up transformer
  • (B)  Step down transformer
  • (C)  Three diodes in common
  • (D)  Triode vacuum tube
Submitted By :Ali Uppal


An OP-AMP comparator is a circuit that compares the signal voltage on one of its inputs with a ______________?

  • (A)  Non-inverting voltage at output
  • (B)  Reference voltage on the other
  • (C)  Virtual input
  • (D)  Output
Submitted By :Ali Uppal


Non-inverting amplifier circuits have____________?

  • (A)  A very high input impedance
  • (B)  A very low input impedance
  • (C)  A low output impedance
  • (D)  None of the above
Submitted By :Ali Uppal