Quiz: Are You Into Digital Electronics?
Digital Electronics is an electronics which is based on 0's and 1's for the representation of the information. This area includes digital terms such as gates, flip flops, timing signals, multiplexer etc. If you are into such area then surely you may not face troubles facing this quiz. All the best!
- 1.Which number system has base 16?
- A.
Decimal.
- B.
Octal.
- C.
Hexadecimal.
- D.
Binary.
- 2.How many entries will be in the truth table of a 3 input NAND gate?
- A.
3
- B.
6
- C.
9
- D.
8
- 3.In a SR latch built from NOR gates, which condition is not allowed?
- A.
S=1, R=0
- B.
S=1, R=1
- C.
S=0, R=1
- D.
S=0, R=0
- 4.Which of these sets are designated as universal gates?
- A.
EX-OR.
- B.
NAND NOR.
- C.
EX-NOR.
- D.
All of above.
- 5.In the toggle mode, JK flip flop has:
- A.
J = 0, K = 0
- B.
J = 1, K = 1
- C.
J = 0, K = 1
- D.
J = 1, K = 0
- 6.A digital circuit that can store one bit is called:
- A.
X-OR gate.
- B.
Logic gate.
- C.
Flip flop.
- D.
Register.
- 7.Full adder has:
- A.
2 inputs and 1 output.
- B.
3 inputs and 2 outputs.
- C.
2 inputs and 2 outputs.
- D.
2 inputs and 3 outputs.
- 8.A PN junction allows current flow when:
- A.
The n-type material is more positive than the p-type material.
- B.
The p-type material is more positive than the n-type material.
- C.
Both the n-type and p-type materials have the same potential.
- D.
There is no potential on the n-type or p-type materials.
- 9.When a diode is forward biased, the voltage across it:
- A.
Is directly proportional to the current.
- B.
Is inversely proportional to the current.
- C.
Is inversely proportional to the power.
- D.
Is directly proportional to the power.
- 10.Diode is:
- A.
2-terminal device
- B.
3-terminal
- C.
4-terminal
- D.
None of the options
- 11.The forward voltage drop across a silicon diode is:
- A.
2.5V
- B.
3V
- C.
10V
- D.
0.7V
- 12.What is the state of an ideal diode in the region of non conduction?
- A.
A short circuit.
- B.
An open circuit.
- C.
Unpredictable.
- D.
Undefined.
- 13.A simple flip flop is:
- A.
Is 2 bit memory.
- B.
Is a four state device.
- C.
Is 1 bit memory.
- D.
Has nothing to do with memory.
- 14.How many binary bits are necessary to represent 32 different numbers?
- A.
2
- B.
3
- C.
4
- D.
5
- 15.In the decimal numbering system, what is MSD?
- A.
The middle digit of a stream of numbers
- B.
The last digit on the right
- C.
The digit to the right of the decimal point
- D.
The digit with the most weight
- 16.Which of the following doping will produce a P-type semiconductor?
- A.
Germanium with phosphorus.
- B.
Silicon with Germanium.
- C.
Silicon with Indium.
- D.
Germanium with Antimony.
- 17.The depletion region in a junction diode contains:
- A.
Only charge carriers (of minority type and majority type).
- B.
No charge at all.
- C.
Vacuum, and no atoms at all.
- D.
Only ions i.e. Immobile charges.
- 18.The depletion layer of a PN junction diode has:
- A.
Only free mobile holes.
- B.
Only free mobile electrons.
- C.
Neither free mobile electrons nor holes.
- D.
Both free mobile holes as well as electrons.
- 19.An AND gate with schematic "bubbles" on its inputs performs the same function as:
- A.
NOT
- B.
NAND
- C.
OR
- D.
NOR
- 20.Suppose Y is a Boolean variable, which of the following expressions willbe equal to 1?
- A.
Y XOR Y
- B.
Y AND 0
- C.
Y NOR 1
- D.
Y XNOR Y
- 21.An OR gate can be imagined as:
- A.
Switches connected in series.
- B.
Switches connected in parallel.
- C.
MOS transistors connected in series.
- D.
All of the above.
- 22.If both inputs of an S-R NAND latch are LOW, what will happen to the output?
- A.
The output will reset.
- B.
The output would become unpredictable.
- C.
No change would occur at the output.
- D.
The output will toggle.
- 23.An AND gate can be imagined as:
- A.
Switches connected in series.
- B.
Switches connected in parallel.
- C.
MOS transistors connected in series.
- D.
All of the above.
- 24.NOR gate is equivalent to a bubbled input:
- A.
AND
- B.
NAND
- C.
XOR
- D.
OR
- 25.Zener diode operates in:
- A.
Saturation region.
- B.
Forward region.
- C.
Reverse region.
- D.
All of above.
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