Basic Electronics Multiple choice questions MCQs – Questions Answers
1. The ripple factor of a power supply is …
a) diode rating
b) filter efficiency
c) power output
d) voltage regulation
2. LED stands for …
a) light energy display
b) light emitting display
c) light emitting detector
d) light emitting diode
3. The multimeter is an instrument that measure
a) resistance
b) voltage
c) current
d) all of these
4. When the temperature of the semi-conductor is increased, the conductivity will …
a) decreases
b) increases
c) same every time
d) all of the above
5. Electrons emitted from hot metal surfaces is a process of …
a) static emission of electrons
b) current emission of electrons
c) thermionic emission of electrons
d) all of these
6. Common transistor has three leads named as ….
a) commom emitter bias
b) emmitter collector case
c) collecctor base emmitter
d) none of these
7. The function of zener diode is …
a) current amplifier
b) voltage amplifier
c) regulators
d) all of these
8. DSC means …
a) digital server omitter
b) digital storage oscilloscope
c) device storage omitter
d) none of these
10. Which of the following logic gates are known as universal gates?
a) NOR, NAND, XNOR
b) XOR, NOR, NAND
c) NOT, AND, OR
d) NOR, NAND
11.
To store one BCD digit how many bits are needed?
a) 1
b) 2
c) 3
d) 4
12. What is Avalanche breakdown in zener diode?
a) voltage multiplication
b) electric current multiplication
c) electrons are decelerated
d) rise in voltage