Digital Logic Design – Digital Electronics – Logic Families and Circuits MCQs

In this section of Digital Logic Design – Digital Electronics – Logic Families and Circuits MCQs (Multiple Choice Questions and Answers),We have tried to cover the below lists of topics.All these MCQs will help you prepare for the various Competitive Exams and University Level Exams.

1. IC Logic Families MCQs.
2. TTL Logic Families MCQs.
3. AND-OR-INVERT Gates MCQs.
4. RTL-Resistor Transistor Logic MCQs.
5. DTL-Diode Transistor Logic MCQs.
6. DCTL-Direct Coupled Transistor Logic MCQs.
7. ECL-Emitter Coupled Logic MCQs.
8. IIL-Integrated Injection Logic MCQs.
9. MOS-Metal Oxide Semiconductor MCQs.
10. CMOS-Complementary Metal Oxide Semiconductor MCQs.

PRACTICE IT NOW TO SHARPEN YOUR CONCEPT AND KNOWLEDGE

1. A very large scale integration VLSI chip has

• 12 to 99 gates
• 10,000 to 99,999 gates
• more than 100,000 gates
• 100 to 9,999 gates

B. 10,000 to 99,999 gates

2. If a logic circuit has a fan out of 4 then the circuit

• 4 input
• has 4 outputs
• can drive maximum of 4 inputs
• gives output 4 times the input

C. can drive maximum of 4 inputs

3. A RTL consists of

• Resistor ,transistor and inductors
• Resistors,diodes and bipolar junction transistor
• Resistors,capacitors and diodes
• Resistors and transistors

D. Resistors and transistors

4. Which of the following logic families has the least propagation delay

• RTL
• DTL
• CMOS
• I^2L (i square L)

D. I^2L (i square L)

5. Which of the following logic family dissipates minimum power?

• CMOS
• ECL
• TTL
• DTL

A. CMOS

6. Recommended fan-out for TTL gate is

• 10
• 4
• 20
• 50

A. 10

7. Current hogging is a serious drawback in

• DTL
• DCTL
• TTL
• ECL

A. DTL

8. The main advantage of TTL with totem-pole output as compared to other TTL types are

• Higher fan in and higher fan out
• Fast switching and low power dissipation
• Higher noise margin and low cost
• None of these

B. Fast switching and low power dissipation

9. The main disadvantage of TTL with totem pole output is

• High power dissipation
• Low fan out
• Wire ANDing operation is not allowed
• Low noise margin

C. Wire ANDing operation is not allowed

10. Which of the following logic family has the complementary outputs

• DTL
• TTL
• I^2L (I square L)
• ECL

D. ECL

11. Which of the following family has the maximum fan out?

• CMOS
• PMOS
• I^2L (I square L)
• ECL

A. CMOS

12. Which of the following series is a TTL –IC family designed to operate satisfactorily in the temperature range from -55 °C to +125°C for military applications?

• 5300 series
• 5400 series
• 7300 series
• 7400 series

B. 5400 series

13. MOSFET is also known as

• UJT
• bipolar junction transistor
• CMOS
• IGFET

D. IGFET

14. The logic level of ECL are taken as

• ‘0’ = -1.8V and ‘1’ =-0.8V
• ‘0’ = 0V and ‘1’ =1V
• ‘0’ = 0.2V and ‘1’ = +5V
• None of these

A. ‘0’ = -1.8V and ‘1’ =-0.8V