ELECTRONIC DEVICES

  • Home -
  • ELECTRONIC DEVICES

ELECTRONIC DEVICES - Topic Wise Multiple Choice Questions (MCQ)

Topic Wise free Electronic Devices MCQ for 11th 12th exam Practice Multiple Choice Questions and answer for JEE-mains State CET Engineering Entrance GATE free Online Test



1 )

C, Si and Ge have same no. of valence electrons. C is an insulator because energy required to take one electron out from

Si is more
C is more
Ge is more
C is less


View Solution



2 )

Ionization energy of isolated phosphorous atom 10 eV. Ionization energy of same atom in Si is nearly ________ eV (Relative Permittivity of silicon = 12)

0.1
0.2
0.3
0.4


View Solution



3 )

By adding _______ impurity in intrinsic semiconductor P type semiconductor is made. Charge of these P type semiconductor is ______

trivalent, neutral
pentavalent, neutral
pentavalent, positive
trivalent, negative


View Solution



4 )

Strong overlapping of different atomic orbital's makes

different energy level
energy band
Conductor
Insulators


View Solution



5 )

We cannot make p – n junction diode by making P type semi-conductor join with N-type semi-conductor, because

Inter-atomic spacing becomes less than 1 A°
P-type will repel N-type
There will be discontinuity for the flowing charge carriers
semi-conducting properties will be lost


View Solution