BASIC ELECTRONICS Solved MCQs
BASIC ELECTRONICS Solved MCQs
1. A logic circuit, that can add two 1-bit numbers and produce outputs for sum and carry
a) full adder
b) semi adder
c) half adder
d) double adder
2. An ordinary transistor is
a) dipolar
b) tripolar
c) bipolar
d) tetra polar
3. What does hybrid word means?
a) unique
b) single
c) dual
d) none of these
4. When the current in primary coil of a transformer is changed it induce change in the magnetic field of
a) capaitor
b) transistor
c) resistor
d) secondary coil
5. We use half wave rectifier for
a) to run AC care
b) to run car radios
c) to run batteries
d) to run tape recorders
6. Zener diode is …
a) current stabiliser
b) voltage stabiliser
c) resistance stabiliser
d) none of these
7. We can construct exclusive -OR gate using which other gates?
a) AND, NOT and OR gate only
b) AND and NAND gate only
c) OR gate only
d) all of these
8. Unit of resistance is …
a) ampere
b) ohm
c) emf
d) none of these
9. Transistor amplifier equation is VCE=VCB+……..
a) 5VBE
b) 3VEB
c) VBE
d) none of these
10. In a reverse biased junction, its barrier potential will be
a) decreased
b) remain same
c) increased
d) continuosly change
11. Mutaual induction dependents on
a) resistance chnages
b) current changes
c) voltage changes
d) none the above
12. A transformer used to convert unbalanced signals to balanced signals is named as …
a) auto – transformer
b) balun
c) step-up transformer
d) step down -transformer
