Basic Electronics (3110016) MCQs

MCQs of Digital

Showing 1 to 10 out of 30 Questions
1.
Suppose that the digital IC family has a fan out of 6. It implies that the gate can supply the current to _______ of same family.
(a) 6 inputs
(b) 6 outputs
(c) 12 nodes
(d) 12 branches
Answer:

Option (a)

2.
If power dissipation and propagation delay in a logic circuit are estimated to be 50 mW and 25ns respectively, what will be its figure of merit?
(a) 0.5 pJ
(b) 2 pJ
(c) 1.25 nJ
(d) 2 nJ
Answer:

Option (c)

3.
What should be the value of input voltage for an efficient operation of a logic circuit by avoiding the conditions of invalid voltage levels?
(a) Lower than VIL (max)
(b) Higher than VIH (min)
(c) Both a and b
(d) None of the above
Answer:

Option (c)

4.
Which type of output current flows towards or into the output terminal in a logic circuit?
(a) Sourcing current
(b) Sinking current
(c) Both a and b
(d) None of the abov
Answer:

Option (b)

5.
From the logic families mentioned below which can be specifically adopted for high speed applications?
(a) Diode Transistor Logic (DTL)
(b) Transistor Transistor Logic (TTL)
(c) Emitter Coupled Logic (ECL)
(d) Complementary metal–oxide–semiconductor (CMOS)
Answer:

Option (c)

6.
From the logic families listed below which one is better for the applications requiring low power consumption?
(a) PMOS
(b) NMOS
(c) CMOS
(d) TTL
Answer:

Option (c)

7.
The full form of ECL is __________
(a) Emitter-collector logic
(b) Emitter-complementary logic
(c) Emitter-coupled logic
(d) Emitter-cored logic
Answer:

Option (a)

8.
Because of its operation ECL is also be named as __________
(a) Complementary mode logic
(b) Current mode logic
(c) Collector mode logic
(d) Collector Mixed Logic
Answer:

Option (b)

9.
Basic gate realized in TTL is ________
(a) NOT
(b) NOR
(c) NAND
(d) AND
Answer:

Option (c)

10.
In a stable logic state TTL devices consume substantially ______ power than equivalent CMOS.
(a) less
(b) more
(c) equal
(d) very high
Answer:

Option (b)

Showing 1 to 10 out of 30 Questions